When I upgraded from 2.6.11 to 2.6.12rc1, the VM started behaving really badly with respect to caching.
Test box is a 1.5GB laptop. In typical use, I would open a mailbox A, and then switch to mailbox B. Immediately switching back to mailbox A, I would find out it was no longer cached. (Using maildirs, FWIW.) Looking at /proc/meminfo, I would see: LowFree: 8-12MB HighFree: 300-400MB Cached: 100-200MB i.e., it was evicting cache when there was plenty of highmem available for use. When going back to 2.6.11, and using the same sort of the workload, the caching would behave more as expected. Bill - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
