On Friday 24 October 2003 12:57, Stephen Smoogen wrote:
> I would just install them on the machine and then reboot. Since 2 is
> not possible change it to the RHL 9.. That way we can see if it is
> kernel or something else. If the slowdown still occurs, then we can
> rule other areas.
FC/Rawhide kernel (megaraid2 module):
[root kickstation-131 root]# hdparm -Tt /dev/sda
/dev/sda:
Timing buffer-cache reads: 2152 MB in 2.00 seconds = 1076.00 MB/sec
Timing buffered disk reads: 178 MB in 3.02 seconds = 58.94 MB/sec
[root kickstation-131 data1]# ls -alh bigfile
-rw-r--r-- 1 root root 1000M Oct 23 18:23 bigfile
[root kickstation-131 data1]# time dd if=bigfile of=secondfile
2048000+0 records in
2048000+0 records out
real 0m26.924s
user 0m1.150s
sys 0m25.290s
RHL9 Kernel:
[root kickstation-131 root]# hdparm -Tt /dev/sda
/dev/sda:
Timing buffer-cache reads: 2248 MB in 2.00 seconds = 1124.00 MB/sec
Timing buffered disk reads: 196 MB in 3.00 seconds = 65.33 MB/sec
[root kickstation-131 data1]# ls -alh bigfile
-rw-r--r-- 1 root root 1000M Oct 23 18:23 bigfile
[root kickstation-131 data1]# time dd if=bigfile of=secondfile
2048000+0 records in
2048000+0 records out
real 1m2.472s
user 0m1.050s
sys 0m27.900s
Interestingly enough, it seems that dd tests are a bit slower in RHL9,
while hdparm is much faster. I'll run tiobench to compare. I'll also
run the tests in a pure RHL9 system.
--
Jesse Keating RHCE MCSE (geek.j2solutions.net)
Fedora Legacy Team (www.fedora.us/wiki/FedoraLegacy)
Mondo DevTeam (www.mondorescue.org)
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