On Sun, Sep 22, 2002 at 05:54:27PM +0200, Marc-Christian Petersen wrote: > : without index mount: > > root@codeman:[/test] # time randfiles foo 100000 > > real 32m55.929s > user 0m1.890s > sys 32m2.500s > > : with index mount: > > root@codeman:[/test] # time randfiles foo 100000 > > real 32m53.929s > user 0m1.690s > sys 32m0.500s These times don't look right. Are you sure you created the filesystem was using directorying indexing turned on? With it turned on, creating 100,000 files should take 10-20 seconds depending on the speed of your system and hard disks. Here's the test script I use for testing directory indexing: #!/bin/sh dd if=/dev/zero of=test.img bs=8k count=30000 mke2fs -j -F -b 1024 -g 1024 -N 1200000 test.img debugfs -w -R "features dir_index" test.img debugfs -w -R "ssv def_hash_version tea" test.img debugfs -w -R "ssv hash_seed random" test.img mount -t ext3 -o loop test.img /mnt pushd /mnt mkdir test test2 test3 cd test time seq -f "%06.0f" 1 100 | xargs touch cd .. cd test2 time seq -f "%06.0f" 1 10000 | xargs touch cd .. cd test3 time seq -f "%06.0f" 1 100000 | xargs touch cd .. popd umount /mnt (You can comment out the 'dd' line after the first time you run the test to speeds things up a bit.) On my system, creating the files in the test3 directory takes 11.408 seconds real time, with 6.221 seconds of system time with the directory indexing. If I comment out the debugfs line which activates the "dir_index" filesystem feature flag, then directory indexing is turned off, and the script takes 38:07 minutes of real time, with 38:05 of it being system time. Your times are consistent with directory indexing not being turned on. - Ted P.S. These tests were with 2.5.36 using the patches available at http://thunk.org/tytso/linux/ext3-dxdir There are also patches against 2.4.19 available. There are a few minor bugs still with the 2.5.36 patches, but they will be fixed in the patches against 2.5.38 which I should have ready shortly. _______________________________________________ Ext3-users@redhat.com https://listman.redhat.com/mailman/listinfo/ext3-users
