On 2010-11-06 15:10, dave b wrote: > I now personally have thought that this problem is the kernel not > keeping track of reads vs writers properly or not providing enough > time to reading processes as writing ones which look like they are > blocking the system.... > > If you want to do a simple test do an unlimited dd (or two dd's of a > limited size, say 10gb) and a find / > Tell me how it goes :) ( the system will stall) > (obviously stop the dd after some time :) ). > > http://article.gmane.org/gmane.linux.kernel.device-mapper.dm-crypt/4561 > iirc can reproduce this on plain ext3. As already mentioned, ext3 is just not a good choice for this sort of thing. Did you have atimes enabled? -- Jens Axboe -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>