От: Ang Chin Han
Тема: Re: Tuning PostgreSQL
Дата: ,
Msg-id: 3F1BCE3A.5080402@bytecraft.com.my
(см: обсуждение, исходный текст)
Ответ на: Re: Tuning PostgreSQL  ("Shridhar Daithankar")
Ответы: Re: Tuning PostgreSQL  ("Shridhar Daithankar")
Список: pgsql-performance

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Tuning PostgreSQL  ("Alexander Priem", )
 Re: Tuning PostgreSQL  ("Shridhar Daithankar", )
 Re: Tuning PostgreSQL  ("Shridhar Daithankar", )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
  Re: Tuning PostgreSQL  (Ang Chin Han, )
   Re: Tuning PostgreSQL  ("Shridhar Daithankar", )
    Re: Tuning PostgreSQL  (Ang Chin Han, )
     Re: Tuning PostgreSQL  ("Shridhar Daithankar", )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
   Re: Tuning PostgreSQL  ("Shridhar Daithankar", )
    Re: Tuning PostgreSQL  ("Alexander Priem", )
  Re: Tuning PostgreSQL  (Ron Johnson, )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
   Re: Tuning PostgreSQL  (Ron Johnson, )
   Re: Tuning PostgreSQL  (Andrew McMillan, )
    Re: Tuning PostgreSQL  ("Arjen van der Meijden", )
     Re: Tuning PostgreSQL  (Tom Lane, )
     Re: Tuning PostgreSQL  ("Balazs Wellisch", )
      Re: Tuning PostgreSQL  (Josh Berkus, )
 Re: Tuning PostgreSQL  ("Roman Fail", )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
   Re: Tuning PostgreSQL  (Josh Berkus, )
    Re: Tuning PostgreSQL  (Vincent van Leeuwen, )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
   Re: Tuning PostgreSQL  (Vincent van Leeuwen, )
    Re: Tuning PostgreSQL  (Bruno Wolff III, )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
   Re: Tuning PostgreSQL  (Andrew Sullivan, )
   Re: Tuning PostgreSQL  ("Jim C. Nasby", )
    Re: Tuning PostgreSQL  ("scott.marlowe", )
     Re: Tuning PostgreSQL  (Greg Stark, )
      Re: Tuning PostgreSQL  (Ron Johnson, )
     Re: Tuning PostgreSQL  (Vivek Khera, )
      Re: Tuning PostgreSQL  (Ron Johnson, )
       Re: Tuning PostgreSQL  ("scott.marlowe", )
        Re: Tuning PostgreSQL  (Ron Johnson, )
         Re: Tuning PostgreSQL  ("scott.marlowe", )
          Re: Tuning PostgreSQL  (Ron Johnson, )
           Re: Tuning PostgreSQL  ("scott.marlowe", )
            Re: Tuning PostgreSQL  (Ron Johnson, )
             Re: Tuning PostgreSQL, pt 2  (Ron Johnson, )
          Re: Tuning PostgreSQL  (Vivek Khera, )
      Re: Tuning PostgreSQL  (Will LaShell, )
  Re: Tuning PostgreSQL  ("Alexander Priem", )
   Re: Tuning PostgreSQL  (Ron Johnson, )
  Re: Tuning PostgreSQL  (Vivek Khera, )
 'View'-performance  ("Alexander Priem", )
  Re: 'View'-performance  (Tom Lane, )

Shridhar Daithankar wrote:

> Good for you. You have time at hand to find out which one suits you best. Do
> the testing before you have load that needs another FS..:-)

Kinda my point is that when we've more load, we'd be using RAID-0 over
RAID-5, or getting faster SCSI drives, or even turn fsync off if that's
a bottleneck, because the different filesystems do not have that much
performance difference[1] -- the filesystem is not a bottleneck. Just
need to tweak most of them a bit, like noatime,data=writeback.

[1] That is, AFAIK, from our testing. Please, please correct me if I'm
wrong: has anyone found that different filesystems produces wildly
different performance for postgresql, FreeBSD's filesystems not included?

--
Linux homer 2.4.18-14 #1 Wed Sep 4 13:35:50 EDT 2002 i686 i686 i386
GNU/Linux
   7:00pm  up 207 days, 10:05,  5 users,  load average: 5.00, 5.03, 5.06

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