2020-08-04 21:09:28

by Stephen Hemminger

[permalink] [raw]
Subject: Fw: [Bug 208807] New: Problem with NFS kernel server code



Begin forwarded message:

Date: Tue, 04 Aug 2020 11:33:23 +0000
From: [email protected]
To: [email protected]
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: [email protected]
Reporter: [email protected]
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.

--
You are receiving this mail because:
You are the assignee for the bug.


2020-08-04 21:22:03

by J. Bruce Fields

[permalink] [raw]
Subject: Re: Fw: [Bug 208807] New: Problem with NFS kernel server code

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: [email protected]
> To: [email protected]
> 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: [email protected]
> Reporter: [email protected]
> 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.
>
> --
> You are receiving this mail because:
> You are the assignee for the bug.