From: Wu Fengguang <fengguang.wu@intel.com>
To: linux-nfs@vger.kernel.org
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>,
linux-hotplug@vger.kernel.org
Subject: Re: very slow NFS boot on linux-next and -mm
Date: Sun, 03 May 2009 12:40:13 +0000 [thread overview]
Message-ID: <20090503124013.GA31700@localhost> (raw)
In-Reply-To: <20090503105456.GA30449@localhost>
Ah it's not really a NFS problem..
On Sun, May 03, 2009 at 06:54:56PM +0800, Wu Fengguang wrote:
>
> My NFSROOT box sometimes will get stuck for a dozen seconds during boot.
>
[snip]
> The NFSROOT client that got stuck is running latest linux-next, the
> server side is running 2.6.30-rc3.
>
> Switching the client kernel to latest -mm makes it very reproducible.
> Here is another stack dump:
>
> [ 180.399845] udevd D ffff8800280291e0 3056 1388 1
The udevd is doing this busy loop like mad:
open("/etc/group", O_RDONLY|O_CLOEXEC) = 7
lseek(7, 0, SEEK_CUR) = 0
fstat(7, {st_mode=S_IFREG|0644, st_sizey7, ...}) = 0
mmap(NULL, 797, PROT_READ, MAP_SHARED, 7, 0) = 0x7f6791601000
lseek(7, 797, SEEK_SET) = 797
munmap(0x7f6791601000, 797) = 0
close(7) = 0
udev version is 0.141-1.
Thanks,
Fengguang
next parent reply other threads:[~2009-05-03 12:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20090503105456.GA30449@localhost>
2009-05-03 12:40 ` Wu Fengguang [this message]
2009-05-03 12:56 ` very slow NFS boot on linux-next and -mm Kay Sievers
[not found] ` <20090504133019.GA14300@localhost>
2009-05-06 13:42 ` Kay Sievers
2009-05-07 11:59 ` [PATCH] inotify: report rounded-up event size to user space Wu Fengguang
2009-05-07 12:16 ` Eric Paris
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