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"distributed checkpoint"
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* "distributed checkpoint"
@ 2007-12-06 22:03 Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 07:51 ` Re: "distributed checkpoint" Albert Cervera i Areny <albert@nan-tic.com>
  0 siblings, 2 replies; 20+ messages in thread

From: Alvaro Herrera @ 2007-12-06 22:03 UTC (permalink / raw)
  To: pgsql-docs; +Cc: pgsql-hackers@postgresql.org

Am I the only one who finds the phrase "distributed checkpointing" a bit
awkward?  Would it be better if we used "time-distributed checkpointing"
instead?

The phrase is used in the release notes, but it's not used anywhere in
the main docs.

-- 
Alvaro Herrera                 http://www.amazon.com/gp/registry/DXLWNGRJD34J
"Hay quien adquiere la mala costumbre de ser infeliz" (M. A. Evans)



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
@ 2007-12-07 01:44 ` Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  1 sibling, 1 reply; 20+ messages in thread

From: Tom Lane @ 2007-12-07 01:44 UTC (permalink / raw)
  To: Alvaro Herrera <alvherre@alvh.no-ip.org>; +Cc: pgsql-docs; pgsql-hackers@postgresql.org

Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> Am I the only one who finds the phrase "distributed checkpointing" a bit
> awkward?  Would it be better if we used "time-distributed checkpointing"
> instead?

Yeah, "distributed" has a bunch of connotations that are wrong for this
purpose.

I spent a bit of time with a thesaurus but didn't come up with anything
that seemed le mot juste.  Best I could do was "spread checkpoint"
or "time-extended checkpoint".  Anybody have a better idea?

			regards, tom lane



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
@ 2007-12-07 03:19   ` Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  0 siblings, 1 reply; 20+ messages in thread

From: Joshua D. Drake @ 2007-12-07 03:19 UTC (permalink / raw)
  To: Tom Lane <tgl@sss.pgh.pa.us>; +Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>; pgsql-docs; pgsql-hackers@postgresql.org

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Thu, 06 Dec 2007 20:44:49 -0500
Tom Lane <tgl@sss.pgh.pa.us> wrote:

> Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> > Am I the only one who finds the phrase "distributed checkpointing"
> > a bit awkward?  Would it be better if we used "time-distributed
> > checkpointing" instead?
> 
> Yeah, "distributed" has a bunch of connotations that are wrong for
> this purpose.
> 
> I spent a bit of time with a thesaurus but didn't come up with
> anything that seemed le mot juste.  Best I could do was "spread
> checkpoint" or "time-extended checkpoint".  Anybody have a better
> idea?

balanced
gradual
extended (I see you mention time-extended but wouldn't time be implicit
based on the actual docs and thus we only need extended?)

Sincerely,

Joshua D. Drake

> 
> 			regards, tom lane
> 
> ---------------------------(end of
> broadcast)--------------------------- TIP 5: don't forget to increase
> your free space map settings
> 


- -- 

      === The PostgreSQL Company: Command Prompt, Inc. ===
Sales/Support: +1.503.667.4564   24x7/Emergency: +1.800.492.2240
PostgreSQL solutions since 1997  http://www.commandprompt.com/
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^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
@ 2007-12-07 03:43     ` David Fetter <david@fetter.org>
  2007-12-07 03:51       ` Re: [DOCS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 04:50       ` Re: [HACKERS] "distributed checkpoint" Andrew Dunstan <andrew@dunslane.net>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
  0 siblings, 3 replies; 20+ messages in thread

From: David Fetter @ 2007-12-07 03:43 UTC (permalink / raw)
  To: Joshua D. Drake <jd@commandprompt.com>; +Cc: Tom Lane <tgl@sss.pgh.pa.us>; Alvaro Herrera <alvherre@alvh.no-ip.org>; pgsql-docs; pgsql-hackers@postgresql.org

On Thu, Dec 06, 2007 at 07:19:44PM -0800, Joshua D. Drake wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> On Thu, 06 Dec 2007 20:44:49 -0500
> Tom Lane <tgl@sss.pgh.pa.us> wrote:
> 
> > Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> > > Am I the only one who finds the phrase "distributed checkpointing"
> > > a bit awkward?  Would it be better if we used "time-distributed
> > > checkpointing" instead?
> > 
> > Yeah, "distributed" has a bunch of connotations that are wrong for
> > this purpose.
> > 
> > I spent a bit of time with a thesaurus but didn't come up with
> > anything that seemed le mot juste.  Best I could do was "spread
> > checkpoint" or "time-extended checkpoint".  Anybody have a better
> > idea?
> 
> balanced
> gradual
> extended (I see you mention time-extended but wouldn't time be implicit
> based on the actual docs and thus we only need extended?)

How about "smoothed?"

Cheers,
David.
-- 
David Fetter <david@fetter.org> http://fetter.org/
Phone: +1 415 235 3778  AIM: dfetter666  Yahoo!: dfetter
Skype: davidfetter      XMPP: david.fetter@gmail.com

Remember to vote!
Consider donating to Postgres: http://www.postgresql.org/about/donate



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [DOCS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
@ 2007-12-07 03:51       ` Joshua D. Drake <jd@commandprompt.com>
  2 siblings, 0 replies; 20+ messages in thread

From: Joshua D. Drake @ 2007-12-07 03:51 UTC (permalink / raw)
  To: David Fetter <david@fetter.org>; +Cc: pgsql-hackers@postgresql.org

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Thu, 6 Dec 2007 19:43:29 -0800
David Fetter <david@fetter.org> wrote:

> On Thu, Dec 06, 2007 at 07:19:44PM -0800, Joshua D. Drake wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> > 
> > On Thu, 06 Dec 2007 20:44:49 -0500
> > Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > 
> > > Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> > > > Am I the only one who finds the phrase "distributed
> > > > checkpointing" a bit awkward?  Would it be better if we used
> > > > "time-distributed checkpointing" instead?
> > > 
> > > Yeah, "distributed" has a bunch of connotations that are wrong for
> > > this purpose.
> > > 
> > > I spent a bit of time with a thesaurus but didn't come up with
> > > anything that seemed le mot juste.  Best I could do was "spread
> > > checkpoint" or "time-extended checkpoint".  Anybody have a better
> > > idea?
> > 
> > balanced
> > gradual
> > extended (I see you mention time-extended but wouldn't time be
> > implicit based on the actual docs and thus we only need extended?)
> 
> How about "smoothed?"


Pre-emptive apologies:

silky
satin
butter

Man... that would rock silky_checkpoint = true ;)

:P

Joshua D. Drake



> 
> Cheers,
> David.


- -- 

      === The PostgreSQL Company: Command Prompt, Inc. ===
Sales/Support: +1.503.667.4564   24x7/Emergency: +1.800.492.2240
PostgreSQL solutions since 1997  http://www.commandprompt.com/
			UNIQUE NOT NULL
Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate
PostgreSQL Replication: http://www.commandprompt.com/products/

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^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
@ 2007-12-07 04:50       ` Andrew Dunstan <andrew@dunslane.net>
  2 siblings, 0 replies; 20+ messages in thread

From: Andrew Dunstan @ 2007-12-07 04:50 UTC (permalink / raw)
  To: David Fetter <david@fetter.org>; +Cc: Joshua D. Drake <jd@commandprompt.com>; Tom Lane <tgl@sss.pgh.pa.us>; Alvaro Herrera <alvherre@alvh.no-ip.org>; pgsql-docs; pgsql-hackers@postgresql.org



David Fetter wrote:
>>
>> balanced
>> gradual
>> extended (I see you mention time-extended but wouldn't time be implicit
>> based on the actual docs and thus we only need extended?)
>>     
>
> How about "smoothed?"
>
>
>   

perhaps we should call it Jacob checkpointing, then.

cheers

andrew



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
@ 2007-12-07 18:22       ` Simon Riggs <simon@2ndquadrant.com>
  2007-12-07 20:16         ` Re: [DOCS] "distributed checkpoint" Hannu Krosing <hannu@skype.net>
  2007-12-08 03:25         ` Re: [HACKERS] "distributed checkpoint" Greg Smith <gsmith@gregsmith.com>
  2 siblings, 2 replies; 20+ messages in thread

From: Simon Riggs @ 2007-12-07 18:22 UTC (permalink / raw)
  To: David Fetter <david@fetter.org>; +Cc: Joshua D. Drake <jd@commandprompt.com>; Tom Lane <tgl@sss.pgh.pa.us>; Alvaro Herrera <alvherre@alvh.no-ip.org>; pgsql-docs; pgsql-hackers@postgresql.org

On Thu, 2007-12-06 at 19:43 -0800, David Fetter wrote:
> On Thu, Dec 06, 2007 at 07:19:44PM -0800, Joshua D. Drake wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> > 
> > On Thu, 06 Dec 2007 20:44:49 -0500
> > Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > 
> > > Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> > > > Am I the only one who finds the phrase "distributed checkpointing"
> > > > a bit awkward?  Would it be better if we used "time-distributed
> > > > checkpointing" instead?
> > > 
> > > Yeah, "distributed" has a bunch of connotations that are wrong for
> > > this purpose.
> > > 
> > > I spent a bit of time with a thesaurus but didn't come up with
> > > anything that seemed le mot juste.  Best I could do was "spread
> > > checkpoint" or "time-extended checkpoint".  Anybody have a better
> > > idea?
> > 
> > balanced
> > gradual
> > extended (I see you mention time-extended but wouldn't time be implicit
> > based on the actual docs and thus we only need extended?)
> 
> How about "smoothed?"

Agreed

"Smoothed" makes a lot of sense for me. We used to have a checkpoint
spike, now we don't. 

Perhaps we should say something like "time extended checkpoints provide
smoother (transaction?) response times" 

-- 
  Simon Riggs
  2ndQuadrant  http://www.2ndQuadrant.com




^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [DOCS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
@ 2007-12-07 20:16         ` Hannu Krosing <hannu@skype.net>
  2007-12-12 23:09           ` Re: [HACKERS] "distributed checkpoint" Josh Berkus <josh@agliodbs.com>
  1 sibling, 1 reply; 20+ messages in thread

From: Hannu Krosing @ 2007-12-07 20:16 UTC (permalink / raw)
  To: Simon Riggs <simon@2ndquadrant.com>; +Cc: David Fetter <david@fetter.org>; Joshua D. Drake <jd@commandprompt.com>; Tom Lane <tgl@sss.pgh.pa.us>; Alvaro Herrera <alvherre@alvh.no-ip.org>; pgsql-docs; pgsql-hackers@postgresql.org


Ühel kenal päeval, R, 2007-12-07 kell 18:22, kirjutas Simon Riggs:
> On Thu, 2007-12-06 at 19:43 -0800, David Fetter wrote:
> > On Thu, Dec 06, 2007 at 07:19:44PM -0800, Joshua D. Drake wrote:
> > > -----BEGIN PGP SIGNED MESSAGE-----
> > > Hash: SHA1
> > > 
> > > On Thu, 06 Dec 2007 20:44:49 -0500
> > > Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > > 
> > > > Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> > > > > Am I the only one who finds the phrase "distributed checkpointing"
> > > > > a bit awkward?  Would it be better if we used "time-distributed
> > > > > checkpointing" instead?
> > > > 
> > > > Yeah, "distributed" has a bunch of connotations that are wrong for
> > > > this purpose.
> > > > 
> > > > I spent a bit of time with a thesaurus but didn't come up with
> > > > anything that seemed le mot juste.  Best I could do was "spread
> > > > checkpoint" or "time-extended checkpoint".  Anybody have a better
> > > > idea?
> > > 
> > > balanced
> > > gradual
> > > extended (I see you mention time-extended but wouldn't time be implicit
> > > based on the actual docs and thus we only need extended?)
> > 
> > How about "smoothed?"
> 
> Agreed
> 
> "Smoothed" makes a lot of sense for me. We used to have a checkpoint
> spike, now we don't. 

wide checkpoints ? 

provide wide and low spikes :)

or even background checpoints ?

> Perhaps we should say something like "time extended checkpoints provide
> smoother (transaction?) response times" 







^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
  2007-12-07 20:16         ` Re: [DOCS] "distributed checkpoint" Hannu Krosing <hannu@skype.net>
@ 2007-12-12 23:09           ` Josh Berkus <josh@agliodbs.com>
  2007-12-13 01:36             ` Re: [HACKERS] "distributed checkpoint" Bruce Momjian <bruce@momjian.us>
  2007-12-13 02:10             ` Re: [HACKERS] "distributed checkpoint" Greg Smith <gsmith@gregsmith.com>
  2007-12-13 11:45             ` Re: [HACKERS] "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  0 siblings, 3 replies; 20+ messages in thread

From: Josh Berkus @ 2007-12-12 23:09 UTC (permalink / raw)
  To: pgsql-hackers@postgresql.org; +Cc: pgsql-docs

All,

Just FYI, it's going to be difficult to replace the name of the feature in 
the PR docs at this point; I already have 11 translations.  What's *wrong* 
with "Load Distributed Checkpoint", which is what we've been calling it 
for 6 months?

-- 
--Josh

Josh Berkus
PostgreSQL @ Sun
San Francisco



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
  2007-12-07 20:16         ` Re: [DOCS] "distributed checkpoint" Hannu Krosing <hannu@skype.net>
  2007-12-12 23:09           ` Re: [HACKERS] "distributed checkpoint" Josh Berkus <josh@agliodbs.com>
@ 2007-12-13 01:36             ` Bruce Momjian <bruce@momjian.us>
  2 siblings, 0 replies; 20+ messages in thread

From: Bruce Momjian @ 2007-12-13 01:36 UTC (permalink / raw)
  To: josh@agliodbs.com; +Cc: pgsql-hackers@postgresql.org; pgsql-docs

Josh Berkus wrote:
> All,
> 
> Just FYI, it's going to be difficult to replace the name of the feature in 
> the PR docs at this point; I already have 11 translations.  What's *wrong* 
> with "Load Distributed Checkpoint", which is what we've been calling it 
> for 6 months?

There was nothing *wrong* with the old wording, but the new wording is
clearer?  Do you disagree it is clearer?  I don't think it makes sense
to keep less-clear wording just to match press release translations.

It is not like we are changing the wording 24 hours before final
release.  There will perhaps be other adjustments that might be needed
for the press release.  Also, the non-English press release isn't going
to match the English release notes word-for-word anyway (they aren't in
English) so is the new naming that big an issue?

I suggest you update the English press release and ask as many
translators who want to update theirs.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://postgres.enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
  2007-12-07 20:16         ` Re: [DOCS] "distributed checkpoint" Hannu Krosing <hannu@skype.net>
  2007-12-12 23:09           ` Re: [HACKERS] "distributed checkpoint" Josh Berkus <josh@agliodbs.com>
@ 2007-12-13 02:10             ` Greg Smith <gsmith@gregsmith.com>
  2007-12-13 17:49               ` Re: [HACKERS] "distributed checkpoint" Josh Berkus <josh@agliodbs.com>
  2 siblings, 1 reply; 20+ messages in thread

From: Greg Smith @ 2007-12-13 02:10 UTC (permalink / raw)
  To: Josh Berkus <josh@agliodbs.com>; +Cc: pgsql-hackers@postgresql.org; pgsql-docs

On Wed, 12 Dec 2007, Josh Berkus wrote:

> What's *wrong* with "Load Distributed Checkpoint", which is what we've 
> been calling it for 6 months?

One issue was that "distributed" has some association with distributed 
computing, which isn't actually the case.  "Spread" is also more 
descriptive of what actually ended up being committed.  Those are fairly 
subtle wording issues that I wouldn't necessarily expect to survive 
translation.

The other problem was that the original description over-sold the feature 
a bit.  It said "prevent I/O spikes" when it actually just reduces them. 
Still possible to have a spike, it probably won't be as big though.  Your 
call on whether correcting that mischaracterization is worth bothering the 
translators over.

--
* Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
  2007-12-07 20:16         ` Re: [DOCS] "distributed checkpoint" Hannu Krosing <hannu@skype.net>
  2007-12-12 23:09           ` Re: [HACKERS] "distributed checkpoint" Josh Berkus <josh@agliodbs.com>
  2007-12-13 02:10             ` Re: [HACKERS] "distributed checkpoint" Greg Smith <gsmith@gregsmith.com>
@ 2007-12-13 17:49               ` Josh Berkus <josh@agliodbs.com>
  0 siblings, 0 replies; 20+ messages in thread

From: Josh Berkus @ 2007-12-13 17:49 UTC (permalink / raw)
  To: pgsql-docs; +Cc: Greg Smith <gsmith@gregsmith.com>; pgsql-hackers@postgresql.org

Greg, All:

> The other problem was that the original description over-sold the feature
> a bit.  It said "prevent I/O spikes" when it actually just reduces them.
> Still possible to have a spike, it probably won't be as big though.  Your
> call on whether correcting that mischaracterization is worth bothering the
> translators over.

Sounds like I'd better.  Sending out this afternoon.

-- 
Josh Berkus
PostgreSQL @ Sun
San Francisco



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
  2007-12-07 20:16         ` Re: [DOCS] "distributed checkpoint" Hannu Krosing <hannu@skype.net>
  2007-12-12 23:09           ` Re: [HACKERS] "distributed checkpoint" Josh Berkus <josh@agliodbs.com>
@ 2007-12-13 11:45             ` Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-13 16:40               ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2 siblings, 1 reply; 20+ messages in thread

From: Alvaro Herrera @ 2007-12-13 11:45 UTC (permalink / raw)
  To: Josh Berkus <josh@agliodbs.com>; +Cc: pgsql-hackers@postgresql.org; pgsql-docs

Josh Berkus wrote:
> All,
> 
> Just FYI, it's going to be difficult to replace the name of the feature in 
> the PR docs at this point; I already have 11 translations.  What's *wrong* 
> with "Load Distributed Checkpoint", which is what we've been calling it 
> for 6 months?

Is a translator really not able to change 3 words in a week?  Come again.

-- 
Alvaro Herrera                          Developer, http://www.PostgreSQL.org/
Hi! I'm a .signature virus!
cp me into your .signature file to help me spread!



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
  2007-12-07 20:16         ` Re: [DOCS] "distributed checkpoint" Hannu Krosing <hannu@skype.net>
  2007-12-12 23:09           ` Re: [HACKERS] "distributed checkpoint" Josh Berkus <josh@agliodbs.com>
  2007-12-13 11:45             ` Re: [HACKERS] "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
@ 2007-12-13 16:40               ` Joshua D. Drake <jd@commandprompt.com>
  2007-12-13 17:34                 ` Re: [DOCS] "distributed checkpoint" Gregory Stark <stark@enterprisedb.com>
  0 siblings, 1 reply; 20+ messages in thread

From: Joshua D. Drake @ 2007-12-13 16:40 UTC (permalink / raw)
  To: Alvaro Herrera <alvherre@alvh.no-ip.org>; +Cc: Josh Berkus <josh@agliodbs.com>; pgsql-hackers@postgresql.org; pgsql-docs

Alvaro Herrera wrote:
> Josh Berkus wrote:
>> All,
>>
>> Just FYI, it's going to be difficult to replace the name of the feature in 
>> the PR docs at this point; I already have 11 translations.  What's *wrong* 
>> with "Load Distributed Checkpoint", which is what we've been calling it 
>> for 6 months?
> 
> Is a translator really not able to change 3 words in a week?  Come again.
> 
I think it is likely more about being able to reach the translators. The 
more common ones such as yourself are obvious but others may not be.

Either way, I think that the change is valid and we need to do it.

Joshua D. Drake



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [DOCS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
  2007-12-07 20:16         ` Re: [DOCS] "distributed checkpoint" Hannu Krosing <hannu@skype.net>
  2007-12-12 23:09           ` Re: [HACKERS] "distributed checkpoint" Josh Berkus <josh@agliodbs.com>
  2007-12-13 11:45             ` Re: [HACKERS] "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-13 16:40               ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
@ 2007-12-13 17:34                 ` Gregory Stark <stark@enterprisedb.com>
  0 siblings, 0 replies; 20+ messages in thread

From: Gregory Stark @ 2007-12-13 17:34 UTC (permalink / raw)
  To: Joshua D. Drake <jd@commandprompt.com>; +Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>; Josh Berkus <josh@agliodbs.com>; pgsql-hackers@postgresql.org; pgsql-docs


"Joshua D. Drake" <jd@commandprompt.com> writes:

> Alvaro Herrera wrote:
>
>> Is a translator really not able to change 3 words in a week?  Come again.
>
> I think it is likely more about being able to reach the translators. The more
> common ones such as yourself are obvious but others may not be.
>
> Either way, I think that the change is valid and we need to do it.

When do we normally freeze strings?

-- 
  Gregory Stark
  EnterpriseDB          http://www.enterprisedb.com
  Ask me about EnterpriseDB's Slony Replication support!



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
@ 2007-12-08 03:25         ` Greg Smith <gsmith@gregsmith.com>
  2007-12-08 03:50           ` Re: [DOCS] "distributed checkpoint" Jonah H. Harris <jonah.harris@gmail.com>
  2007-12-10 01:48           ` Re: [HACKERS] "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  1 sibling, 2 replies; 20+ messages in thread

From: Greg Smith @ 2007-12-08 03:25 UTC (permalink / raw)
  To: ; +Cc: pgsql-docs; pgsql-hackers@postgresql.org

On Fri, 7 Dec 2007, Simon Riggs wrote:

> "Smoothed" makes a lot of sense for me. We used to have a checkpoint
> spike, now we don't.

To be accurate, there used to be a huge and unavoidable spike, now there's 
a control that aims to make it smaller.  The problem hasn't completely 
gone away yet.

With that in mind, let me start over.  Here's what's in the release notes 
right now:

"Distributed checkpoints prevent I/O spikes during checkpoints"

It's good this came up, because that is factually wrong; while the average 
case is much better some OS-dependant aspects of the spike (what happens 
at fsync) are certainly still there.  I think it's easier to rewrite this 
whole thing so it's technically accurate rather than a simple fix of the 
wording, something like this:

"Checkpoint writes can be spread over a longer time period to smooth the 
I/O spike during each checkpoint"

It's got spread, it's got smooth, and if I could have worked "silky" in 
there too I would have.

--
* Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [DOCS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
  2007-12-08 03:25         ` Re: [HACKERS] "distributed checkpoint" Greg Smith <gsmith@gregsmith.com>
@ 2007-12-08 03:50           ` Jonah H. Harris <jonah.harris@gmail.com>
  1 sibling, 0 replies; 20+ messages in thread

From: Jonah H. Harris @ 2007-12-08 03:50 UTC (permalink / raw)
  To: Greg Smith <gsmith@gregsmith.com>; +Cc: pgsql-docs; pgsql-hackers@postgresql.org

On Dec 7, 2007 10:25 PM, Greg Smith <gsmith@gregsmith.com> wrote:
> > "Smoothed" makes a lot of sense for me. We used to have a checkpoint
> > spike, now we don't.
>
> To be accurate, there used to be a huge and unavoidable spike, now there's
> a control that aims to make it smaller.  The problem hasn't completely
> gone away yet.

Agreed.

> "Distributed checkpoints prevent I/O spikes during checkpoints"
>
> It's good this came up, because that is factually wrong;

Agreed.

> "Checkpoint writes can be spread over a longer time period to smooth the
> I/O spike during each checkpoint"

Sounds good to me.

> It's got spread, it's got smooth, and if I could have worked "silky" in
> there too I would have.

:)

-- 
Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
EnterpriseDB Corporation                | fax: 732.331.1301
499 Thornall Street, 2nd Floor          | jonah.harris@enterprisedb.com
Edison, NJ 08837                        | http://www.enterprisedb.com/



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
  2007-12-07 01:44 ` Re: "distributed checkpoint" Tom Lane <tgl@sss.pgh.pa.us>
  2007-12-07 03:19   ` Re: [HACKERS] "distributed checkpoint" Joshua D. Drake <jd@commandprompt.com>
  2007-12-07 03:43     ` Re: [HACKERS] "distributed checkpoint" David Fetter <david@fetter.org>
  2007-12-07 18:22       ` Re: [HACKERS] "distributed checkpoint" Simon Riggs <simon@2ndquadrant.com>
  2007-12-08 03:25         ` Re: [HACKERS] "distributed checkpoint" Greg Smith <gsmith@gregsmith.com>
@ 2007-12-10 01:48           ` Alvaro Herrera <alvherre@alvh.no-ip.org>
  1 sibling, 0 replies; 20+ messages in thread

From: Alvaro Herrera @ 2007-12-10 01:48 UTC (permalink / raw)
  To: Greg Smith <gsmith@gregsmith.com>; +Cc: pgsql-docs; pgsql-hackers@postgresql.org

Greg Smith wrote:

> It's good this came up, because that is factually wrong; while the average 
> case is much better some OS-dependant aspects of the spike (what happens at 
> fsync) are certainly still there.  I think it's easier to rewrite this 
> whole thing so it's technically accurate rather than a simple fix of the 
> wording, something like this:
>
> "Checkpoint writes can be spread over a longer time period to smooth the 
> I/O spike during each checkpoint"

Thanks, I changed it to this.

-- 
Alvaro Herrera                        http://www.advogato.org/person/alvherre
"No necesitamos banderas
 No reconocemos fronteras"                  (Jorge González)



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: "distributed checkpoint"
  2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
@ 2007-12-07 07:51 ` Albert Cervera i Areny <albert@nan-tic.com>
  1 sibling, 0 replies; 20+ messages in thread

From: Albert Cervera i Areny @ 2007-12-07 07:51 UTC (permalink / raw)
  To: pgsql-docs

A Dijous 06 Desembre 2007, Alvaro Herrera va escriure:
> Am I the only one who finds the phrase "distributed checkpointing" a bit
> awkward?  Would it be better if we used "time-distributed checkpointing"
> instead?
>
> The phrase is used in the release notes, but it's not used anywhere in
> the main docs.

To me, non-native english speaker, time-distributed seems the clearer one.

-- 
Albert Cervera i Areny
http://www.NaN-tic.com



^ permalink  raw  reply  [nested|flat] 20+ messages in thread

* Re: [HACKERS] "distributed checkpoint"
@ 2007-12-13 06:50 Magnus Hagander <magnus@hagander.net>
  0 siblings, 0 replies; 20+ messages in thread

From: Magnus Hagander @ 2007-12-13 06:50 UTC (permalink / raw)
  To: josh@agliodbs.com; +Cc: pgsql-hackers@postgresql.org; pgsql-docs

> Just FYI, it's going to be difficult to replace the name of the feature in 
> the PR docs at this point; I already have 11 translations.  What's *wrong* 
> with "Load Distributed Checkpoint", which is what we've been calling it 
> for 6 months?
> 

Are you saying the PR was 'string freezed' before rc1? And before the actual backend? I wonder how reasonable that really is...

That said we shouldn't change things around for no reason. IKn this case I think there was good motivation.

/Magnus




^ permalink  raw  reply  [nested|flat] 20+ messages in thread


end of thread, other threads:[~2007-12-13 17:49 UTC | newest]

Thread overview: 20+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2007-12-06 22:03 "distributed checkpoint" Alvaro Herrera <alvherre@alvh.no-ip.org>
2007-12-07 01:44 ` Tom Lane <tgl@sss.pgh.pa.us>
2007-12-07 03:19   ` Joshua D. Drake <jd@commandprompt.com>
2007-12-07 03:43     ` David Fetter <david@fetter.org>
2007-12-07 03:51       ` Joshua D. Drake <jd@commandprompt.com>
2007-12-07 04:50       ` Andrew Dunstan <andrew@dunslane.net>
2007-12-07 18:22       ` Simon Riggs <simon@2ndquadrant.com>
2007-12-07 20:16         ` Hannu Krosing <hannu@skype.net>
2007-12-12 23:09           ` Josh Berkus <josh@agliodbs.com>
2007-12-13 01:36             ` Bruce Momjian <bruce@momjian.us>
2007-12-13 02:10             ` Greg Smith <gsmith@gregsmith.com>
2007-12-13 17:49               ` Josh Berkus <josh@agliodbs.com>
2007-12-13 11:45             ` Alvaro Herrera <alvherre@alvh.no-ip.org>
2007-12-13 16:40               ` Joshua D. Drake <jd@commandprompt.com>
2007-12-13 17:34                 ` Gregory Stark <stark@enterprisedb.com>
2007-12-08 03:25         ` Greg Smith <gsmith@gregsmith.com>
2007-12-08 03:50           ` Jonah H. Harris <jonah.harris@gmail.com>
2007-12-10 01:48           ` Alvaro Herrera <alvherre@alvh.no-ip.org>
2007-12-07 07:51 ` Albert Cervera i Areny <albert@nan-tic.com>
2007-12-13 06:50 Re: [HACKERS] "distributed checkpoint" Magnus Hagander <magnus@hagander.net>

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