Journaling UFS with gjournal.
Ulrich Spoerlein
uspoerlein at gmail.com
Tue Jun 20 20:50:50 UTC 2006
Pawel Jakub Dawidek wrote:
> Hello.
>
> For the last few months I have been working on gjournal project.
Cool Stuff!
> Reading. grep -r on two src/ directories in parallel:
> UFS: 84s
> UFS+SU: 138s
> gjournal(1): 102s
> gjournal(2): 89s
>
> As you can see, even on one disk, untaring eight src.tgz is two times
> faster than UFS+SU. I've no idea why gjournal is faster in reading.
The UFS+SU score doesn't seem right. Why do SU have a negative impact on
read performance? Is it solely because of the atime updates?
Ulrich Spoerlein
--
PGP Key ID: 20FEE9DD Encrypted mail welcome!
Fingerprint: AEC9 AF5E 01AC 4EE1 8F70 6CBD E76E 2227 20FE E9DD
Which is worse: ignorance or apathy?
Don't know. Don't care.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 187 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-current/attachments/20060620/213cbcdc/attachment.pgp
More information about the freebsd-current
mailing list