Martijn van Oosterhout írta:
> On Sat, Apr 10, 2010 at 02:36:41PM +0200, Boszormenyi Zoltan wrote:
>>>> The above is quite reproducable, "pg_ctl stop -m immediate"
>>>> "usually" inflated my serial sequence, but I had two occasions
>>>> when not. The 69 -> 70 was one. The inflated increase is always 33:
>>> AFAIKS sequences are pre-logged with 32 values to WAL to avoid
>>> overhead. I suspect this is why you are seeing those gaps.
>> Then it should happen all the time, even with "-m fast" or "-m smart", no?
> Nope, because on a normal shutdown it writes out the actual value. When
> you say "immediate" you mean "right now, don't bother with anything not
> important", like for example gaps in sequences. You're essentially
> crashing the DB.
> Have a ncie day,
OK, thanks for the info.
Bible has answers for everything. Proof:
"But let your communication be, Yea, yea; Nay, nay: for whatsoever is more
than these cometh of evil." (Matthew 5:37) - basics of digital technology.
"May your kingdom come" - superficial description of plate tectonics
Cybertec Schönig & Schönig GmbH
In response to
pgsql-hackers by date
|Next:||From: Fujii Masao||Date: 2010-04-12 09:06:21|
|Subject: Re: testing HS/SR - 1 vs 2 performance|
|Previous:||From: Fujii Masao||Date: 2010-04-12 06:48:58|
|Subject: Re: testing hot standby|