From: Andrew M. <ak...@zi...> - 2002-06-20 20:20:19
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"Griffiths, Richard A" wrote: > > We ran without highmem enabled so the Kernel only saw 1GB of memory. > Yup. I take it back - high ext3 lock contention happens on 2.5 as well, which has block-highmem. With heavy write traffic onto six disks, two controllers, six filesystems, four CPUs the machine spends about 40% of the time spinning on locks in fs/ext3/inode.c You're un dual CPU, so the contention is less. Not very nice. But given that the longest spin time was some tens of milliseconds, with the average much lower, it shouldn't affect overall I/O throughput. Possibly something else is happening. Have you tested ext2? |