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Or, rm?


root@bubu $ mount
/dev/sda1 on / type ext3 (rw,noatime,nodiratime,acl,user_xattr,data=writeback)

Kernel scheduling,

root@bubu $ cat /sys/block/sda/queue/scheduler
noop anticipatory [deadline] cfq

Directory to remove,

root@bubu $ ls -l 0A/ | wc -l

those 25061 nodes is only an empty directory, it was a squid empty cache.

Time to remove all nodes in directory,

root@bubu $ time rm -rf 0A/
real    5m12.053s
user    0m0.155s
sys     0m8.857s

NOTE TO MYSELF: never use ext3 for database, proxy, or any disk related machine.

TODO: try another file system (?)