On Mon, 2009-04-20 at 18:26 +0530, Amit Shah wrote:
> I'll re-run the tests later tonight..
I ran ext3 in all journaling modes (one run), and there was spit
difference.
(the mmap test is a bit slow and unfriendly)
marge:..tmp/tmp # ./test-file-zero-alloc-speed 4 /dev/sdf3 /media/root ext3 rw,_netdev,noatime,data=ordered,acl,user_xattr
posix-fallocate run time:
seconds:microseconds: 1240230249:280060
seconds:microseconds: 1240230303:989879
(approx 54s)
mmap run time:
seconds:microseconds: 1240230304:67286
seconds:microseconds: 1240230363:882957
(approx 59s)
4096-sized chunk run time:
seconds:microseconds: 1240230363:989225
seconds:microseconds: 1240230419:242924
(approx 56s)
8192-sized chunk run time:
seconds:microseconds: 1240230419:365540
seconds:microseconds: 1240230473:307148
(approx 54s)
marge:..tmp/tmp # ./test-file-zero-alloc-speed 4 /dev/sdf3 /media/root ext3 rw,_netdev,noatime,data=writeback,acl,user_xattr
posix-fallocate run time:
seconds:microseconds: 1240230511:276152
seconds:microseconds: 1240230565:40419
(approx 54s)
mmap run time:
seconds:microseconds: 1240230571:139959
seconds:microseconds: 1240230633:254590
(approx 62s)
4096-sized chunk run time:
seconds:microseconds: 1240230639:300132
seconds:microseconds: 1240230693:95665
(approx 54s)
8192-sized chunk run time:
seconds:microseconds: 1240230698:655975
seconds:microseconds: 1240230753:902749
(approx 55s)
marge:..tmp/tmp # ./test-file-zero-alloc-speed 4 /dev/sdf3 /media/root ext3 rw,_netdev,noatime,data=guarded,acl,user_xattr
posix-fallocate run time:
seconds:microseconds: 1240230802:594939
seconds:microseconds: 1240230856:602117
(approx 54s)
mmap run time:
seconds:microseconds: 1240230862:792587
seconds:microseconds: 1240230924:985089
(approx 62s)
4096-sized chunk run time:
seconds:microseconds: 1240230930:827949
seconds:microseconds: 1240230985:663422
(approx 55s)
8192-sized chunk run time:
seconds:microseconds: 1240230991:483085
seconds:microseconds: 1240231046:601340
(approx 55s)
marge:..tmp/tmp # ./test-file-zero-alloc-speed 4 /dev/sdf3 /media/root ext3 rw,_netdev,noatime,data=journal,acl,user_xattr
posix-fallocate run time:
seconds:microseconds: 1240231074:745621
seconds:microseconds: 1240231128:740106
(approx 54s)
mmap run time:
seconds:microseconds: 1240231134:830362
seconds:microseconds: 1240231193:939029
(approx 59s)
4096-sized chunk run time:
seconds:microseconds: 1240231199:800554
seconds:microseconds: 1240231254:600778
(approx 55s)
8192-sized chunk run time:
seconds:microseconds: 1240231260:386834
seconds:microseconds: 1240231315:121745
(approx 55s)
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