[ Comments below, in line ] On Friday 06 March 2009 at 4:50 pm, Pablo Sanchez penned about "Re: [vbox-users] disk throughput only 25% of native"
> Have you `strace' the VirtualBox process? Hi Brian, I `strace'd my VirtualBox process and I'm attaching it for your comparison. What I can see is VirtualBox uses the system call `select()' to poll for I/O: network, tty, disk. Its timeout is set to roughly every five hundredth of a second: ~.0488 This means it'll relinquish the CPU which is why I see during idle periods to only consume ~11% of the CPU. I suspect `select()' must be busted on your platform for some reason. Or VirtualBox is using some other mechanism to relinqish the processor. `strace()' will tell you. Cheers, -- Pablo Sanchez - Blueoak Database Engineering, Inc Ph: 819.459.1926 Fax: 760.860.5225 (US)
strace.vbox.bz2
Description: BZip2 compressed data
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