On Fri, 16 May 2008, Gordon Messmer wrote:
Jeff Bastian wrote:
I installed F9 yesterday under VMware Fusion 1.1.2 and enabled disk
encryption. It was working fine until cron fired up makewhatis. At that
point the system became so sluggish it was basically unusable.
Try to reproduce that problem on real hardware rather than VMWare. The key
repeat thing used to bug me a lot, but I thought Michal Maruska fixed it
years ago:
https://bugzilla.redhat.com/show_bug.cgi?id=76959
Before jumping to bare metal, I created a new VMware machine and installed
F9 -- but without disk encryption -- and repeated the test. I made sure
the installed packages were the same on both of my virtual machines, and
enabled VMI, and used 'elevator=noop' on both.
On the new virtual machine, I got similar results with 'time
/etc/cron.weekly/makewhatis.cron':
# time /etc/cron.weekly/makewhatis.cron
real 35m26.437s
user 3m12.721s
sys 13m6.747s
And, according to 'top', the CPU was spending 80%+ on the system. (Under
Fedora 8, it stays around 45%.)
I'm also seeing the missing & repeated key stroke behavior while
makewhatis is running.
So, it would seem that the disk encryption is NOT to blame for the
sluggish behavior. There's something else going on, maybe because it's a
virtual machine, or maybe with the SCSI drivers in the latest kernel.
It could be because current VMware Tools does not install cleanly on
2.6.24 and newer kernels. I know there are some unofficial patches to get
it to compile, but I haven't tried them yet. On my F8 virtual machine,
I'm still using a 2.6.23 kernel since the tools installed fine with it.
Hmmm, time to do some more experiments...
Jeff
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