Re: Remove or weaken hints about "effective resolution of sleep delays is 10 ms"?
От | Robert Haas |
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Тема | Re: Remove or weaken hints about "effective resolution of sleep delays is 10 ms"? |
Дата | |
Msg-id | CA+TgmoYFZbiFAvKTY5=eMovm8JcQr62P2_3BHf6RvGsMEpL3CQ@mail.gmail.com обсуждение исходный текст |
Ответ на | Remove or weaken hints about "effective resolution of sleep delays is 10 ms"? (Andres Freund <andres@anarazel.de>) |
Ответы |
Re: Remove or weaken hints about "effective resolution of sleep delays is 10 ms"?
Re: Remove or weaken hints about "effective resolution of sleep delays is 10 ms"? |
Список | pgsql-hackers |
On Wed, Feb 10, 2016 at 5:15 PM, Andres Freund <andres@anarazel.de> wrote: > Hi, > > Several places in our docs have blurbs like >> Note that on many systems, the effective resolution of sleep delays is >> 10 milliseconds; setting <varname>wal_writer_delay</> to a value that >> is not a multiple of 10 might have the same results as setting it to >> the next higher multiple of 10. > Afaik that's not the case on any recent operating system/hardware. So > perhaps we should just remove all of those blurbs, or just replace them > with something like "on some older systems the effective resolution of > sleep delays is limited to multiples of 10 milliseconds"? Hmm, is that true? What we do we think the resolution is on modern systems? I would not have guessed that to be inaccurate. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
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