I've had io-locks in 2.6.32, but they seem to have disappeared in 2.6.34 (gentoo hardened-r1). At least the frequency is drastically less,as previously under heavy IO I would get lock ups weekly, and now under the same load, my kernel hasn't been locking up for two to three weeks. Of course, this is just anecdotal evidence, and not based on any change-logs... On Wed, 18 Aug 2010 10:31:00 +0200 Heinz Diehl <htd@xxxxxxxxxxxxxxxxx> wrote: > On 17.08.2010, Arno Wagner wrote: > > > What is the current take on this problem? Any fix > > known or expected for the near future? > > I don't know, and I'm not a VM proff either. That said, > does it improve things when you write e.g. the following in your > sysctl.conf: > > vm.dirty_ratio = 10 > vm.dirty_background_ratio = 5 > > Or you could go even lower using > > vm.dirty_background_bytes = 134217728 > vm.dirty_bytes = 268435456 > > (but then without setting vm.dirty_ratio and vm.dirty_background). > It causes pdflush to write data more frequently and in smaller amounts, > thus reducing blocking via disk i/o. _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
