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From: Samuel Thibault <admin@listes.aquilenet.fr>
To: admin@listes.aquilenet.fr, Dongli Zhang <dongli.zhang@oracle.com>
Cc: Hans van Kranenburg <hans@knorrie.org>,
	xen-devel <xen-devel@lists.xenproject.org>,
	Debian Xen Team <pkg-xen-devel@lists.alioth.debian.org>
Subject: Re: [admin] [Pkg-xen-devel] [BUG] task jbd2/xvda4-8:174 blocked for more than 120 seconds.
Date: Sat, 1 Jun 2019 21:47:08 +0200	[thread overview]
Message-ID: <20190601194708.zyzwntis2epnpiw2@function> (raw)
In-Reply-To: <29cb64d5-1d7f-30d5-d294-c3556b3e02e1@oracle.com>

Hello,

Dongli Zhang, le lun. 18 févr. 2019 08:09:56 +0800, a ecrit:
> On 2/18/19 5:29 AM, Samuel Thibault wrote:
> >>>>> On 2/10/19 12:35 AM, Samuel Thibault wrote:
> >>>>>> Oh!  That could be it indeed.  I'm wondering what could be monopolizing
> >>>>>> them, though, and why +deb9u11 is affected while +deb9u10 is not.  I'm
> >>>>>> afraid increasing the gnttab max size to 32 might just defer filling it
> >>>>>> up.
> >>>>>>
> >>>>>>>   -# ./xen-diag  gnttab_query_size 5
> >>>>>>>   domid=5: nr_frames=11, max_nr_frames=32
> >>>>>>
...
> > The number seems to be going up by about one every day. So probably a
> > grant entry leak somewhere :/
> 
> This might not be a grant leak. The block pv driver would hold the persistent
> grant for a long time.

Just to give an update to close the thread: after a VM uptime of 111
days, nr_frames is at 41, so it looks like we don't have a leak, just a
busy VM :)

Samuel

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel

WARNING: multiple messages have this Message-ID (diff)
From: Samuel Thibault <admin@listes.aquilenet.fr>
To: admin@listes.aquilenet.fr, Dongli Zhang <dongli.zhang@oracle.com>
Cc: Hans van Kranenburg <hans@knorrie.org>,
	xen-devel <xen-devel@lists.xenproject.org>,
	Debian Xen Team <pkg-xen-devel@lists.alioth.debian.org>
Subject: Re: [Xen-devel] [admin] [Pkg-xen-devel] [BUG] task jbd2/xvda4-8:174 blocked for more than 120 seconds.
Date: Sat, 1 Jun 2019 21:47:08 +0200	[thread overview]
Message-ID: <20190601194708.zyzwntis2epnpiw2@function> (raw)
Message-ID: <20190601194708.0zYQmH0Q1M0fR7oTKr68R6N14SpQqNQjXyBG1xIjqeQ@z> (raw)
In-Reply-To: <29cb64d5-1d7f-30d5-d294-c3556b3e02e1@oracle.com>

Hello,

Dongli Zhang, le lun. 18 févr. 2019 08:09:56 +0800, a ecrit:
> On 2/18/19 5:29 AM, Samuel Thibault wrote:
> >>>>> On 2/10/19 12:35 AM, Samuel Thibault wrote:
> >>>>>> Oh!  That could be it indeed.  I'm wondering what could be monopolizing
> >>>>>> them, though, and why +deb9u11 is affected while +deb9u10 is not.  I'm
> >>>>>> afraid increasing the gnttab max size to 32 might just defer filling it
> >>>>>> up.
> >>>>>>
> >>>>>>>   -# ./xen-diag  gnttab_query_size 5
> >>>>>>>   domid=5: nr_frames=11, max_nr_frames=32
> >>>>>>
...
> > The number seems to be going up by about one every day. So probably a
> > grant entry leak somewhere :/
> 
> This might not be a grant leak. The block pv driver would hold the persistent
> grant for a long time.

Just to give an update to close the thread: after a VM uptime of 111
days, nr_frames is at 41, so it looks like we don't have a leak, just a
busy VM :)

Samuel

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel

  parent reply	other threads:[~2019-06-01 19:47 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-08 17:00 [BUG] task jbd2/xvda4-8:174 blocked for more than 120 seconds Sacha
2019-02-08 17:13 ` [admin] " Samuel Thibault
2019-02-08 19:18   ` [Pkg-xen-devel] " Hans van Kranenburg
2019-02-08 23:16     ` [admin] [Pkg-xen-devel] " Samuel Thibault
2019-02-09 16:01       ` Hans van Kranenburg
2019-02-09 16:35         ` Samuel Thibault
2019-02-11  1:37           ` Dongli Zhang
2019-02-11  8:18             ` Samuel Thibault
2019-02-11 21:59             ` Hans van Kranenburg
2019-02-11 22:10               ` Samuel Thibault
2019-02-12  4:11                 ` Dongli Zhang
2019-02-17 21:29                   ` Samuel Thibault
2019-02-18  0:09                     ` Dongli Zhang
2019-02-19 23:49                       ` Samuel Thibault
2019-06-01 19:47                       ` Samuel Thibault [this message]
2019-06-01 19:47                         ` [Xen-devel] " Samuel Thibault

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