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Re: dump time increase by 1h with new kernel - Mailing list pgsql-performance

From Justin T Pryzby
Subject Re: dump time increase by 1h with new kernel
Date
Msg-id 20091008211536.GA17785@norchemlab.com
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In response to Re: dump time increase by 1h with new kernel  ("Kevin Grittner" <Kevin.Grittner@wicourts.gov>)
List pgsql-performance
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On Thu, Oct 08, 2009 at 03:37:39PM -0500, Kevin Grittner wrote:
> Justin T Pryzby <justinp@norchemlab.com> wrote:
> > On Thu, Oct 08, 2009 at 10:49:37AM -0700, Joshua D. Drake wrote:
> >> Did your scheduler change between the kernel versions?
> > No, it's deadline for both.
>
> How about write barriers?  I had a kernel upgrade which turned them on
Doesn't seem to be that either :(

[   55.120073] Filesystem "dm-0": Disabling barriers, trial barrier write failed
crb2-db2        (254, 0)
/dev/mapper/crb2-db2 on /media/database

Justin

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