| From: | PFC <lists(at)boutiquenumerique(dot)com> |
|---|---|
| To: | "Bruce Momjian" <pgman(at)candle(dot)pha(dot)pa(dot)us>, "Magnus Hagander" <mha(at)sollentuna(dot)net> |
| Cc: | "Merlin Moncure" <merlin(dot)moncure(at)rcsonline(dot)com>, "Josh Berkus" <josh(at)agliodbs(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: seq scan cache vs. index cache smackdown |
| Date: | 2005-03-01 05:32:14 |
| Message-ID: | opsmx1n0mnth1vuj@musicbox |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
>> (For those not knowing - it's ReadFile/WriteFile where you pass an array
>> of "this many bytes to this address" as parameters)
>
> Isn't that like the BSD writev()/readv() that Linux supports also? Is
> that something we should be using on Unix if it is supported by the OS?
Nope, readv()/writev() read/write from/to the file sequentially to/from a
list of buffers in memory. The Windows calls read/write at random file
offsets to/from a list of buffers.
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