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* Dell Perc/6
@ 2008-02-12 16:32 Craig James <craig_james@emolecules.com>
2008-02-12 19:01 ` Re: Dell Perc/6 Greg Smith <gsmith@gregsmith.com>
2008-02-13 10:02 ` Re: Dell Perc/6 Tore Halset <halset@pvv.ntnu.no>
0 siblings, 2 replies; 7+ messages in thread
From: Craig James @ 2008-02-12 16:32 UTC (permalink / raw)
To: pgsql-performance
Does anyone have performance info about the new Dell Perc/6 controllers? I found a long discussion ("Dell vs HP") about the Perc/5, but nothing about Perc/6. What's under the covers?
Here is the (abbreviated) info from Dell on this machine:
PowerEdge 1950 III Quad Core Intel® Xeon® E5405, 2x6MB Cache, 2.0GHz, 1333MHz FSB
Additional Processors Quad Core Intel® Xeon® E5405, 2x6MB Cache, 2.0GHz, 1333MHz FSB
Memory 8GB 667MHz (4x2GB), Dual Ranked DIMMs
Hard Drive Configuration Integrated SAS/SATA RAID 5, PERC 6/i Integrated
Thanks,
Craig
^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: Dell Perc/6
2008-02-12 16:32 Dell Perc/6 Craig James <craig_james@emolecules.com>
@ 2008-02-12 19:01 ` Greg Smith <gsmith@gregsmith.com>
1 sibling, 0 replies; 7+ messages in thread
From: Greg Smith @ 2008-02-12 19:01 UTC (permalink / raw)
To: Craig James <craig_james@emolecules.com>; +Cc: pgsql-performance
On Tue, 12 Feb 2008, Craig James wrote:
> Does anyone have performance info about the new Dell Perc/6 controllers? I
> found a long discussion ("Dell vs HP") about the Perc/5, but nothing about
> Perc/6. What's under the covers?
The Perc/6i has an LSI Logic MegaRAID SAS 1078 chipset under the hood. I
know the Linux drivers for the card seemed to stabilize around October,
there's a good sized list of compatible distributions on LSI's site.
FreeBSD support has some limitations but basically works. I haven't seen
any benchmarks for the current version of the card yet.
--
* Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD
^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: Dell Perc/6
2008-02-12 16:32 Dell Perc/6 Craig James <craig_james@emolecules.com>
@ 2008-02-13 10:02 ` Tore Halset <halset@pvv.ntnu.no>
2008-02-13 11:06 ` Re: Dell Perc/6 Dave Cramer <pg@fastcrypt.com>
2008-02-13 15:56 ` Re: Dell Perc/6 Merlin Moncure <mmoncure@gmail.com>
1 sibling, 2 replies; 7+ messages in thread
From: Tore Halset @ 2008-02-13 10:02 UTC (permalink / raw)
To: Craig James <craig_james@emolecules.com>; +Cc: pgsql-performance
Hello.
I think I started that discussion. We ended up buying a Dell 2900 with
PERC 6/i and 10 * 145GB SAS 3,5" 15KRpm discs. 6 of the SAS discs are
in a raid 10 for the database, 2 in a mirror for the wal and the last
2 in a mirror for the OS. We get 350MB/s writing and 380MB/s reading
to/from the raid 10 area using dd. The OS is Ubuntu and the filesystem
for the raid 10 is ext3.
The box is still under testing, but we plan to set it in production
this week.
Regards,
- Tore.
On Feb 12, 2008, at 17:32 , Craig James wrote:
> Does anyone have performance info about the new Dell Perc/6
> controllers? I found a long discussion ("Dell vs HP") about the
> Perc/5, but nothing about Perc/6. What's under the covers?
>
> Here is the (abbreviated) info from Dell on this machine:
> PowerEdge 1950 III Quad Core Intel® Xeon® E5405, 2x6MB Cache,
> 2.0GHz, 1333MHz FSB
> Additional Processors Quad Core Intel® Xeon® E5405, 2x6MB Cache,
> 2.0GHz, 1333MHz FSB
> Memory 8GB 667MHz (4x2GB), Dual Ranked DIMMs
> Hard Drive Configuration Integrated SAS/SATA RAID 5, PERC 6/i
> Integrated
>
> Thanks,
> Craig
>
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^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: Dell Perc/6
2008-02-12 16:32 Dell Perc/6 Craig James <craig_james@emolecules.com>
2008-02-13 10:02 ` Re: Dell Perc/6 Tore Halset <halset@pvv.ntnu.no>
@ 2008-02-13 11:06 ` Dave Cramer <pg@fastcrypt.com>
2008-02-13 19:45 ` Re: Dell Perc/6 Tore Halset <halset@pvv.ntnu.no>
1 sibling, 1 reply; 7+ messages in thread
From: Dave Cramer @ 2008-02-13 11:06 UTC (permalink / raw)
To: Tore Halset <halset@pvv.ntnu.no>; +Cc: Craig James <craig_james@emolecules.com>; pgsql-performance
On 13-Feb-08, at 5:02 AM, Tore Halset wrote:
> Hello.
>
> I think I started that discussion. We ended up buying a Dell 2900
> with PERC 6/i and 10 * 145GB SAS 3,5" 15KRpm discs. 6 of the SAS
> discs are in a raid 10 for the database, 2 in a mirror for the wal
> and the last 2 in a mirror for the OS. We get 350MB/s writing and
> 380MB/s reading to/from the raid 10 area using dd. The OS is Ubuntu
> and the filesystem for the raid 10 is ext3.
>
Wow that's fantastic. Just to be sure, did you make sure that you read
and wrote 2x memory to take the cache out of the measurement ?
Dave
^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: Dell Perc/6
2008-02-12 16:32 Dell Perc/6 Craig James <craig_james@emolecules.com>
2008-02-13 10:02 ` Re: Dell Perc/6 Tore Halset <halset@pvv.ntnu.no>
2008-02-13 11:06 ` Re: Dell Perc/6 Dave Cramer <pg@fastcrypt.com>
@ 2008-02-13 19:45 ` Tore Halset <halset@pvv.ntnu.no>
2008-02-13 20:28 ` Re: Dell Perc/6 Tore Halset <halset@pvv.ntnu.no>
0 siblings, 1 reply; 7+ messages in thread
From: Tore Halset @ 2008-02-13 19:45 UTC (permalink / raw)
To: Dave Cramer <pg@fastcrypt.com>; +Cc: Craig James <craig_james@emolecules.com>; pgsql-performance
On Feb 13, 2008, at 12:06, Dave Cramer wrote:
>
> On 13-Feb-08, at 5:02 AM, Tore Halset wrote:
>
>> Hello.
>>
>> I think I started that discussion. We ended up buying a Dell 2900
>> with PERC 6/i and 10 * 145GB SAS 3,5" 15KRpm discs. 6 of the SAS
>> discs are in a raid 10 for the database, 2 in a mirror for the wal
>> and the last 2 in a mirror for the OS. We get 350MB/s writing and
>> 380MB/s reading to/from the raid 10 area using dd. The OS is Ubuntu
>> and the filesystem for the raid 10 is ext3.
>>
> Wow that's fantastic. Just to be sure, did you make sure that you
> read and wrote 2x memory to take the cache out of the measurement ?
>
> Dave
>
The box have 16GB of ram, but my original test file was only 25GB.
Sorry. Going to 33GB lowered the numbers for writing. Here you have
some samples.
% sh -c "dd if=/dev/zero of=bigfile bs=8k count=4000000 && sync"
32768000000 bytes (33 GB) copied, 103.722 seconds, 316 MB/s
32768000000 bytes (33 GB) copied, 99.669 seconds, 329 MB/s
% time dd if=bigfile of=/dev/null bs=8k
32768000000 bytes (33 GB) copied, 85.4235 seconds, 384 MB/s
32768000000 bytes (33 GB) copied, 85.4628 seconds, 383 MB/s
Regards,
- Tore.
^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: Dell Perc/6
2008-02-12 16:32 Dell Perc/6 Craig James <craig_james@emolecules.com>
2008-02-13 10:02 ` Re: Dell Perc/6 Tore Halset <halset@pvv.ntnu.no>
2008-02-13 11:06 ` Re: Dell Perc/6 Dave Cramer <pg@fastcrypt.com>
2008-02-13 19:45 ` Re: Dell Perc/6 Tore Halset <halset@pvv.ntnu.no>
@ 2008-02-13 20:28 ` Tore Halset <halset@pvv.ntnu.no>
0 siblings, 0 replies; 7+ messages in thread
From: Tore Halset @ 2008-02-13 20:28 UTC (permalink / raw)
To: Merlin Moncure <mmoncure@gmail.com>; +Cc: Craig James <craig_james@emolecules.com>; Dave Cramer <pg@fastcrypt.com>; pgsql-performance
On Feb 13, 2008, at 20:45, Tore Halset wrote:
> The box have 16GB of ram, but my original test file was only 25GB.
> Sorry. Going to 33GB lowered the numbers for writing. Here you have
> some samples.
>
> % sh -c "dd if=/dev/zero of=bigfile bs=8k count=4000000 && sync"
> 32768000000 bytes (33 GB) copied, 103.722 seconds, 316 MB/s
> 32768000000 bytes (33 GB) copied, 99.669 seconds, 329 MB/s
>
> % time dd if=bigfile of=/dev/null bs=8k
> 32768000000 bytes (33 GB) copied, 85.4235 seconds, 384 MB/s
> 32768000000 bytes (33 GB) copied, 85.4628 seconds, 383 MB/s
>
> Regards,
> - Tore.
And here are the bonnie++ numbers. I am a bonnie++ newbie so I ran it
with no options.
Version 1.03c ------Sequential Output------ --Sequential Input-
--Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block--
--Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec
%CP /sec %CP
harteigen 32136M 83983 97 221757 40 106483 19 89603 97 268787
22 886.1 1
------Sequential Create------ --------Random
Create--------
-Create-- --Read--- -Delete-- -Create-- --Read---
-Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec
%CP /sec %CP
16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++
+++++ +++
harteigen,32136M,
83983,97,221757,40,106483,19,89603,97,268787,22,886.1,1,16,+++++,+++,++
+++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++
Regards,
- Tore.
^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: Dell Perc/6
2008-02-12 16:32 Dell Perc/6 Craig James <craig_james@emolecules.com>
2008-02-13 10:02 ` Re: Dell Perc/6 Tore Halset <halset@pvv.ntnu.no>
@ 2008-02-13 15:56 ` Merlin Moncure <mmoncure@gmail.com>
1 sibling, 0 replies; 7+ messages in thread
From: Merlin Moncure @ 2008-02-13 15:56 UTC (permalink / raw)
To: Tore Halset <halset@pvv.ntnu.no>; +Cc: Craig James <craig_james@emolecules.com>; pgsql-performance
On Feb 13, 2008 5:02 AM, Tore Halset <halset@pvv.ntnu.no> wrote:
> Hello.
>
> I think I started that discussion. We ended up buying a Dell 2900 with
> PERC 6/i and 10 * 145GB SAS 3,5" 15KRpm discs. 6 of the SAS discs are
> in a raid 10 for the database, 2 in a mirror for the wal and the last
> 2 in a mirror for the OS. We get 350MB/s writing and 380MB/s reading
> to/from the raid 10 area using dd. The OS is Ubuntu and the filesystem
> for the raid 10 is ext3.
Those are decent numbers. Can you do a bonnie++ run and post the
results (specifically interested in seeks)?
merlin
^ permalink raw reply [nested|flat] 7+ messages in thread
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-- links below jump to the message on this page --
2008-02-12 16:32 Dell Perc/6 Craig James <craig_james@emolecules.com>
2008-02-12 19:01 ` Greg Smith <gsmith@gregsmith.com>
2008-02-13 10:02 ` Tore Halset <halset@pvv.ntnu.no>
2008-02-13 11:06 ` Dave Cramer <pg@fastcrypt.com>
2008-02-13 19:45 ` Tore Halset <halset@pvv.ntnu.no>
2008-02-13 20:28 ` Tore Halset <halset@pvv.ntnu.no>
2008-02-13 15:56 ` Merlin Moncure <mmoncure@gmail.com>
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