-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sunday, 2013-10-27 at 14:25 +0100, Yamaban wrote:
On Sun, 27 Oct 2013 13:37, Greg Freemyer <> wrote:
"Carlos E. R." <> wrote:
Now, notice the lack of the 2 minute delay on the extra sync, for the ext4 test. I have no explanation for this; perhaps as I had to reboot, the system cache was fully emptied. Maybe, to do these test properly, the system would have to be rebooted on each test :-?
At a minimum you should empty the cache between runs:
# flush dirty pages to disk sync # throw clean pages away echo 3 > /proc/sys/vm/drop_caches
Drop_caches accepts 1, 2, 3. I don't recall offhand what each value does.
excerpts from my freemem-script: [ code ]
# 0 = non valid !! since kernel 3.0 # 1 = free pagecache # 2 = free dentries and inodes # 3 = free both ( 1 + 2 ) /usr/bin/sync /sbin/sysctl -q -w vm.drop_caches=3
[ /code ]
using /sbin/sysctl is equivialent to the "echo >/proc/sys/..." line above
I recoment doing this at least once before each testrun else the kernel-caches pollute the measurements, as seen.
Noted for next time, thanks :-)
And yes, as already pointed out : for mkfs.ext[34] the -H <inode-count> option is nescessary. be aware of ((number-of-dirs*2)+ number-of-files) *1.1) as minimum recommention for small files.
Yes, I know that that the inode count and sector size can be adjusted. But I intentionally did not :-) I also wanted to test number of big files allowed by each filesystem, but I did not. Time! - -- Cheers, Carlos E. R. (from 12.3 x86_64 "Dartmouth" at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iEYEARECAAYFAlJtZOcACgkQtTMYHG2NR9URygCgjB066UNv8HZ7t+SvORUQArgF TzgAn0kOtHOgcUCfUqfgOCzXhAyBPKu+ =a19G -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org