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Date:      Thu, 31 Aug 2023 15:35:26 -0700
From:      Cy Schubert <Cy.Schubert@cschubert.com>
To:        Alexander Motin <mav@FreeBSD.org>
Cc:        Cy Schubert <Cy.Schubert@cschubert.com>, Gleb Smirnoff <glebius@FreeBSD.org>, Drew Gallatin <gallatin@freebsd.org>, Martin Matuska <mm@freebsd.org>, src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org
Subject:   Re: git: 315ee00fa961 - main - zfs: merge openzfs/zfs@804414aad
Message-ID:  <20230831223526.DCB701A1@slippy.cwsent.com>
In-Reply-To: <a5c51f3f-8c7f-8bd5-f718-72bc33fe22ed@FreeBSD.org>
References:  <202308270509.37R596B5048298@gitrepo.freebsd.org>  <ZO_aOaf-eGiCMCKy@cell.glebi.us> <c09c92df-90f5-8c94-4125-9e33262bc686@FreeBSD.org> <07faf861-9186-47d1-992a-91d483ea4e9c@app.fastmail.com> <1db726d4-32c9-e1b8-51d6-981aa51b7825@FreeBSD.org> <20230831175350.981F1D5@slippy.cwsent.com> <a5c51f3f-8c7f-8bd5-f718-72bc33fe22ed@FreeBSD.org>

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In message <a5c51f3f-8c7f-8bd5-f718-72bc33fe22ed@FreeBSD.org>, Alexander 
Motin
writes:
> On 31.08.2023 13:53, Cy Schubert wrote:
> > One thing that circumvents my two problems is reducing poudriere bulk jobs
> > from 8 to 5 on my 4 core machines.
>
> Cy, I have no real evidences to think it is related, other than your 
> panics look like some memory corruptions, but could you try is patch: 
> https://github.com/openzfs/zfs/pull/15228 .  If it won't do the trick, 
> then I am out of ideas without additional input.

So far so good. Poudriere has been running with a decent -J jobs on both 
machines for over an hour. I'll let you know if they survive the night. It 
can take some time before the panics happen though.

The problem is more likely to occur when there are a lot of small package 
builds than large long running jobs, probably because of the parallel ZFS 
dataset creations, deletions, and rollbacks.

>
> Gleb, you may try to add this too, just as a choice between impossible 
> and improbable.
>
> -- 
> Alexander Motin


-- 
Cheers,
Cy Schubert <Cy.Schubert@cschubert.com>
FreeBSD UNIX:  <cy@FreeBSD.org>   Web:  https://FreeBSD.org
NTP:           <cy@nwtime.org>    Web:  https://nwtime.org

			e^(i*pi)+1=0





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