Messages in this thread | | | Date | Mon, 5 Oct 2009 15:39:59 +0800 | From | Wu Fengguang <> | Subject | Re: [PATCH v2] NFS: introduce writeback wait queue |
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On Mon, Oct 05, 2009 at 03:35:51PM +0800, Wu Fengguang wrote: > Trond, I see this trace on linux-next. There are no more dirty pages > when `cp' aborts after filling up the partition: > > cp: writing `/mnt/test/zero3': No space left on device > > I noticed that since then nr_writeback is decreased very slowly > (~100 pages per second). Looks like an interesting behavior.
In the mean time, there are constant 7-8MB/s writes in the NFS server. The network flow is much smaller ~400K/s. How can I debug this issue?
Thanks, Fengguang
> nr_writeback nr_dirty nr_unstable > 41230 36284 8764 > 41230 37307 7755 > 40009 42812 3818 > 32619 42812 11198 > 32314 42812 11503 > 31894 42812 11862 > 31832 42812 11871 > 31770 42812 11871 > 31721 42812 11871 > 31653 42812 11871 > 40789 33754 11871 > 40713 33754 11871 > 40638 33754 11871 > 40566 33754 11871 > 43901 30313 11871 > 74164 0 11871 > 74062 0 11871 > 73978 0 11871 > 73904 0 11871 > 73858 0 11871 > 73798 0 11871 > 73688 0 11871 > 73580 0 11871 > 73477 0 11871 > > Thanks, > Fengguang
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