From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Cc: Justin Pryzby <pryzby@telsasoft.com>
Cc: Dilip Kumar <dilipbalaut@gmail.com>
Subject: Re: longfin and tamandua aren't too happy but I'm not sure why
Date: Tue, 27 Sep 2022 17:50:07 -0400
Message-ID: <3845323.1664315407@sss.pgh.pa.us> (raw)
In-Reply-To: <CA+TgmoZk0fNrmbwAkHWy9PvnSros6cj-8qyyWe8DBhTTeRCieg@mail.gmail.com>
References: <CA+TgmoYO5ee6EWhbxz+TE9hcSDONCJvczPNv--33Uk8Xd9tMHQ@mail.gmail.com>
<20220927200712.GH6256@telsasoft.com>
<3825454.1664310917@sss.pgh.pa.us>
<3837430.1664311847@sss.pgh.pa.us>
<CA+TgmoZk0fNrmbwAkHWy9PvnSros6cj-8qyyWe8DBhTTeRCieg@mail.gmail.com>
Robert Haas <robertmhaas@gmail.com> writes:
> On Tue, Sep 27, 2022 at 4:50 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> There is a second problem that I am going to hold your feet to the
>> fire about:
>> (lldb) p sizeof(SharedInvalidationMessage)
>> (unsigned long) $1 = 24
> Also, I don't really know what problem you think it's going to cause
> if that structure gets bigger. If we increased the size from 16 bytes
> even all the way to 32 or 64 bytes, what negative impact do you think
> that would have?
Maybe it wouldn't have any great impact. I don't know, but I don't
think it's incumbent on me to measure that. You or the patch author
should have had a handle on that question *before* committing.
regards, tom lane
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Subject: Re: longfin and tamandua aren't too happy but I'm not sure why
In-Reply-To: <3845323.1664315407@sss.pgh.pa.us>
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