I supose you say so because the disk could be slow, but it should not be
this slow because they virtual machines and they are accesing the same
way as is the local disk. (Both are LVM volumes)
I found almost no documentation about how to install GFS2, so I'm
assuming I did something wrong. I supose GFS2 do not add about 5 minutes
of delay because of it's operations!
Jordi
David Teigland wrote:
On Thu, Jun 21, 2007 at 12:57:03PM +0200, Jordi Prats wrote:
Hi all,
I'm getting a very poor performance using GFS2. Here some numbers:
A disk usage on a GFS2 filesystem:
[root@urani CLUSTER]# time du -hs PostgreSQL814/postgresql-8.1.4/
121M PostgreSQL814/postgresql-8.1.4/
real 5m49.597s
user 0m0.000s
sys 0m0.004s
On the local disk:
[root@urani CLUSTER]# time du -hs postgresql-8.1.4/
116M postgresql-8.1.4/
real 0m0.015s
user 0m0.000s
sys 0m0.016s
You should compare with gfs1, that will tell you if the gfs2 numbers are
in the right ballpark.
Dave
--
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/ / Jordi Prats
C E / S / C A Dept. de Sistemes
/_/ Centre de Supercomputació de Catalunya
Gran Capità, 2-4 (Edifici Nexus) · 08034 Barcelona
T. 93 205 6464 · F. 93 205 6979 · jprats@xxxxxxxx
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