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Date:   Tue, 4 Aug 2020 17:21:28 -0400
From:   "J. Bruce Fields" <bfields@fieldses.org>
To:     Stephen Hemminger <stephen@networkplumber.org>
Cc:     Chuck Lever <chuck.lever@oracle.com>, linux-nfs@vger.kernel.org
Subject: Re: Fw: [Bug 208807] New: Problem with NFS kernel server code
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Commented, but I guess it should really be reassigned to nfsd, I'm not
sure how.

--b.

On Tue, Aug 04, 2020 at 02:07:44PM -0700, Stephen Hemminger wrote:
> 
> 
> Begin forwarded message:
> 
> Date: Tue, 04 Aug 2020 11:33:23 +0000
> From: bugzilla-daemon@bugzilla.kernel.org
> To: stephen@networkplumber.org
> Subject: [Bug 208807] New: Problem with NFS kernel server code
> 
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=208807
> 
>             Bug ID: 208807
>            Summary: Problem with NFS kernel server code
>            Product: Networking
>            Version: 2.5
>     Kernel Version: 5.8.0
>           Hardware: All
>                 OS: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Other
>           Assignee: stephen@networkplumber.org
>           Reporter: nanook@eskimo.com
>         Regression: No
> 
> Created attachment 290759
>   --> https://bugzilla.kernel.org/attachment.cgi?id=290759&action=edit  
> Output of dmesg while machine was dying
> 
> After about an hour and a half of operating on 5.8.0, one of our NFS servers
> began to slow and basically ground to a halt.  Looks like a spinlock issue in
> the NFS kernel server code.  I'll attach the output of dmesg while the machine
> was dying in a file called "spinlock".  A shame because while it was running,
> the performance of 5.8 was astounding.  Only the NFS servers seem to get ill,
> the
> client machines seem to run fine on 5.8 so far at least.
> 
> -- 
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