Messages in this thread | | | Date | Sat, 28 Apr 2007 01:59:12 -0700 | From | Andrew Morton <> | Subject | Re: [ext3][kernels >= 2.6.20.7 at least] KDE going comatose when FS is under heavy write load (massive starvation) |
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On Sat, 28 Apr 2007 10:51:48 +0200 Matthias Andree <matthias.andree@gmx.de> wrote:
> On Fri, 27 Apr 2007, Andrew Morton wrote: > > > But none of this explains a 20-minute hang, unless a *lot* of fsyncs are > > being performed, perhaps. > > Another thing that is rather unpleasant (haven't yet tried fiddling with > the dirty limits) is UDF to DVD-RAM - try rsyncing /home to a DVD-RAM, > that's going to leave you with tons of dirty buffers that clear slowly > -- "watch -n 1 grep -i dirty /proc/meminfo" is boring, but elucidating... >
yes, a few people are attacking that from various angles at present. It's tricky - writeback has to juggle a lot of balls. We'll get there.
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