On Mon, Dec 24, 2007 at 08:16:50PM -0500, Mark Fullmer wrote: > > On Dec 24, 2007, at 8:19 AM, Kostik Belousov wrote: > > > > >Mark, could you, please, retest the patch below in your setup ? > >I want to put a change or some edition of it into the 7.0 release, and > >we need to move fast to do this. > > It's building now. The testing will run overnight. > > Your patch to ffs_sync() and vfs_msync() stopped the periodic packet > loss, > but other file system activity such as (cd /; tar -cf - .) > /dev/ > null will > cause dropped packets. Same behavior, packets never make it up to the > IP layer.
What fs do you use ? If FFS, are softupdates turned on ? Please, show the total time spent in the softdepflush process. Also, try to add the FULL_PREEMPTION kernel config option and report whether it helps.
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