Re: performance for high-volume log insertion

From: Tom Lane
Subject: Re: performance for high-volume log insertion
Date: ,
Msg-id: 11633.1240433349@sss.pgh.pa.us
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In response to: Re: performance for high-volume log insertion  (Stephen Frost)
List: pgsql-performance

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performance for high-volume log insertion  (, )
 Re: performance for high-volume log insertion  (Stephen Frost, )
  Re: performance for high-volume log insertion  (, )
   Re: performance for high-volume log insertion  (Stephen Frost, )
    Re: performance for high-volume log insertion  (, )
     Re: performance for high-volume log insertion  (Stephen Frost, )
      Re: performance for high-volume log insertion  (, )
       Re: performance for high-volume log insertion  (Stephen Frost, )
        Re: performance for high-volume log insertion  (, )
       Re: performance for high-volume log insertion  (Ben Chobot, )
        Re: performance for high-volume log insertion  (Stephen Frost, )
         Re: performance for high-volume log insertion  (, )
          Re: performance for high-volume log insertion  (Stephen Frost, )
           Re: performance for high-volume log insertion  (, )
            Re: performance for high-volume log insertion  (, )
             Re: performance for high-volume log insertion  (Stephen Frost, )
            Re: performance for high-volume log insertion  (Stephen Frost, )
   Re: performance for high-volume log insertion  (Greg Smith, )
    Re: performance for high-volume log insertion  (Stephen Frost, )
     Re: performance for high-volume log insertion  (, )
      Re: performance for high-volume log insertion  (Stephen Frost, )
    Re: performance for high-volume log insertion  (, )
     Re: performance for high-volume log insertion  (Stephen Frost, )
      Re: performance for high-volume log insertion  (, )
       Re: performance for high-volume log insertion  (Richard Huxton, )
        Re: performance for high-volume log insertion  (Kenneth Marshall, )
         Re: performance for high-volume log insertion  (, )
          Re: performance for high-volume log insertion  (Kenneth Marshall, )
     Re: performance for high-volume log insertion  (Greg Smith, )
      Re: performance for high-volume log insertion  (, )
       Re: performance for high-volume log insertion  (Kenneth Marshall, )
       Re: performance for high-volume log insertion  (Greg Smith, )
   Re: performance for high-volume log insertion  (James Mansion, )
    Re: performance for high-volume log insertion  (Stephen Frost, )
     Re: performance for high-volume log insertion  (, )
      Re: performance for high-volume log insertion  (Robert Haas, )
      Re: performance for high-volume log insertion  (Stephen Frost, )
       Re: performance for high-volume log insertion  (Glenn Maynard, )
        Re: performance for high-volume log insertion  (, )
         Re: performance for high-volume log insertion  (Glenn Maynard, )
        Re: performance for high-volume log insertion  (Stephen Frost, )
         Re: performance for high-volume log insertion  (Tom Lane, )
         Re: performance for high-volume log insertion  (Glenn Maynard, )
          Re: performance for high-volume log insertion  (Stephen Frost, )
           Re: performance for high-volume log insertion  (Glenn Maynard, )
            Re: performance for high-volume log insertion  (Stephen Frost, )
             Re: performance for high-volume log insertion  (Glenn Maynard, )
              Re: performance for high-volume log insertion  (Stephen Frost, )
             Re: performance for high-volume log insertion  (, )
              Re: performance for high-volume log insertion  (Stephen Frost, )
           Re: performance for high-volume log insertion  (Thomas Kellerer, )
            Re: performance for high-volume log insertion  (Kris Jurka, )
             Re: performance for high-volume log insertion  (Thomas, )
             Re: performance for high-volume log insertion  (Scott Marlowe, )
              Re: performance for high-volume log insertion  (Kris Jurka, )
               Re: performance for high-volume log insertion  (Scott Marlowe, )
               Re: performance for high-volume log insertion  (, )
     Re: performance for high-volume log insertion  (James Mansion, )
      Re: performance for high-volume log insertion  (Stephen Frost, )
       Re: performance for high-volume log insertion  (James Mansion, )
        Re: performance for high-volume log insertion  ("Joshua D. Drake", )
        Re: performance for high-volume log insertion  (Glenn Maynard, )
         Re: performance for high-volume log insertion  (, )
          Re: performance for high-volume log insertion  (Stephen Frost, )
         Re: performance for high-volume log insertion  (PFC, )
          Re: performance for high-volume log insertion  (, )
          Re: performance for high-volume log insertion  (Glenn Maynard, )
 Re: performance for high-volume log insertion  (Simon Riggs, )

Stephen Frost <> writes:
> * Glenn Maynard () wrote:
>> separate inserts, no transaction: 21.21s
>> separate inserts, same transaction: 1.89s
>> 40 inserts, 100 rows/insert: 0.18s
>> one 40000-value insert: 0.16s
>> 40 prepared inserts, 100 rows/insert: 0.15s
>> COPY (text): 0.10s
>> COPY (binary): 0.10s

> What about 40000 individual prepared inserts?  Just curious about it.

Also, just to be clear: were the "40 insert" cases 40 separate
transactions or one transaction?  I think the latter was meant but
it's not 100% clear.

            regards, tom lane


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Subject: Re: performance for high-volume log insertion