write cache was enabled on all the ZFS drives, but disabling it gave a
negligible speed improvement: (FWIW, the pool has 50 drives)
(write cache on)
/bin/time tar xf /tmp/vbulletin_3-6-4.tar
real 51.6
user0.0
sys 1.0
(write cache off)
/bin/time tar xf
I've just generated some data for an upcoming blog entry on
the subject. This is about a small file tar extract :
All times are elapse (single 72GB SAS disk)
Local and memory based filesystems
tmpfs : 0.077 sec
ufs : 0.25 sec
zfs : 0.12 sec
NFS service
Roch - PAE wrote:
I've just generated some data for an upcoming blog entry on
the subject. This is about a small file tar extract :
All times are elapse (single 72GB SAS disk)
Local and memory based filesystems
tmpfs : 0.077 sec
ufs : 0.25 sec
zfs : 0.12
Ah, thanks -- reading that thread did a good job of explaining what I was
seeing. I was going
nuts trying to isolate the problem.
Is work being done to improve this performance? 100% of my users are coming in
over NFS,
and that's a huge hit. Even on single large files, writes are slower by
