| From: | markw(at)osdl(dot)org |
|---|---|
| To: | manfred(at)colorfullife(dot)com |
| Cc: | tgl(at)sss(dot)pgh(dot)pa(dot)us, josh(at)agliodbs(dot)com, Q(at)ping(dot)be, pgman(at)candle(dot)pha(dot)pa(dot)us, markir(at)paradise(dot)net(dot)nz, pgsql-performance(at)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: [HACKERS] fsync method checking |
| Date: | 2004-03-26 16:09:43 |
| Message-ID: | 200403261609.i2QG9l220991@mail.osdl.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers pgsql-performance |
On 26 Mar, Manfred Spraul wrote:
> markw(at)osdl(dot)org wrote:
>
>>Compare file sync methods with one 8k write:
>> (o_dsync unavailable)
>> open o_sync, write 6.270724
>> write, fdatasync 13.275225
>> write, fsync, 13.359847
>>
>>
> Odd. Which filesystem, which kernel? It seems fdatasync is broken and
> syncs the inode, too.
It's linux-2.6.5-rc1 with ext2 filesystems.
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