Date: Tue, 22 May 2018 16:16:32 +0200 From: Alexander Leidinger <Alexander@leidinger.net> To: freebsd-current@freebsd.org Subject: Re: Deadlocks / hangs in ZFS Message-ID: <20180522161632.Horde.ROSnBoZixBoE9ZBGp5VBQgZ@webmail.leidinger.net> In-Reply-To: <20180522122924.GC1954@zxy.spb.ru> References: <20180522101749.Horde.Wxz9gSxx1xArxkYMQqTL0iZ@webmail.leidinger.net> <fa263af4-9bf7-88f8-8d23-21456daf7960@FreeBSD.org> <20180522122924.GC1954@zxy.spb.ru>
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Quoting Slawa Olhovchenkov <slw@zxy.spb.ru> (from Tue, 22 May 2018
15:29:24 +0300):
> On Tue, May 22, 2018 at 08:17:00AM -0400, Steve Wills wrote:
>
>> I may be seeing similar issues. Have you tried leaving top -SHa running
>> and seeing what threads are using CPU when it hangs? I did and saw pid
>> 17 [zfskern{txg_thread_enter}] using lots of CPU but no disk activity
>> happening. Do you see similar?
I will try and report back.
> Can you try https://reviews.freebsd.org/D7538 and report?
The patch tells it is against -STABLE, we're talking -current here.
It has been a while since I tried Karl's patch the last time, and I
stopped because it didn't apply to -current anymore at some point.
Will what is provided right now in the patch work on -current?
As a data point, the system I talk about in the start of the thread
has 64 GB RAM and the ARC is not limited via sysctl.
Bye,
Alexander.
--
http://www.Leidinger.net Alexander@Leidinger.net: PGP 0x8F31830F9F2772BF
http://www.FreeBSD.org netchild@FreeBSD.org : PGP 0x8F31830F9F2772BF
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