Messages in this thread | | | Date | Mon, 17 Mar 2003 01:48:23 -0800 | From | William Lee Irwin III <> | Subject | Re: [PATCH] distributed counters for ext2 to avoid group scaning |
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On Sun, Mar 16, 2003 at 06:01:55PM +0300, Alex Tomas wrote: >> ext2 with concurrent balloc/ialloc doesn't maintain global free >> inodes/blocks counters. this is due to badness of spinlocks and >> atomic_t from big iron's viewpoint. therefore, to know these values >> we should scan all group descriptors. there are 81 groups for 10G >> fs. I believe there is method to avoid scaning and decrease memory >> footprint.
On Mon, Mar 17, 2003 at 01:37:12AM -0800, William Lee Irwin III wrote: > benching now
Bad news. I don't have big enough fs's to do this one. Working it...
$ df -HT Filesystem Type Size Used Avail Use% Mounted on /dev/sda2 ext2 4.2G 2.8G 1.2G 72% / /dev/sdb1 ext2 9.1G 7.0G 1.6G 82% /home /dev/sdb2 ext2 9.1G 42M 8.6G 1% /results /dev/sdd1 ext2 19G 8.0G 9.2G 47% /work /dev/sde1 ext2 19G 1.7G 16G 10% /test $
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