On Monday 07 January 2008 at 9:41 am, Pablo Sanchez penned about "Re: [vbox-users] 1.5.4 regression - requires `nohz=off' but ...:
> On Monday 07 January 2008 at 9:18 am, Pablo Sanchez penned > > about "[vbox-users] 1.5.4 regression - requires `nohz=off' but ...: > > Howdy, > > > > I'm running openSUSE 10.3 (2.6.22.13-0.3-bigsmp) and when I > > recently upgraded to 1.5.4, I noticed _after_ the first boot, my > > VM consumes 50-75% of System time. If I pass `nohz=off' to the > > kernel, the problem goes way (usage down to 5-6%). > > > > I just installed 1.5.2 to confirm that I don't see the same issue > > after the second boot _and_ without needing `nohz=off' > > Interesting enough, System usage is lower in 1.5.2 during idle > > than 1.5.4: 1-3% > > Correction: 1.5.2 uses about 10-12% of System. Howdy, I've had a bit more time to narrow this down and I made an error on the above interpretation. Here's what I'm seeing when using 1.5.2 -or- 1.5.4: Without setting `nohz=off', after a cold boot, the VM uses about 5-7% CPU as reported by 'top' If I suspend-to-disk, and even if I `rmmod vboxdrv' before suspending, on thawing, the VM uses between 60-70% of the CPU. Mostly System time. If I use `nohz=off', suspend-to-disk no longer works. Should I file a bug? I realize it's a bit esoteric. Cheers, -- Pablo Sanchez - Blueoak Database Engineering, Inc Ph: 819.459.1926 Toll free: 888.459.1926 Fax: 603.720.7723 (US) Text Page: xxxxxxxxx _______________________________________________ vbox-users mailing list [email protected] http://vbox.innotek.de/mailman/listinfo/vbox-users
