Bug#509215: 'top' doesn't report multi-core CPU usage properly w/ default kernel

2009-01-01 Thread Keith Godfrey
Hi Moritz, I'd like to re-open this bug as I've again been successful at reproducing it. I'm not sure if it's a 'top' problem, as originally reported, or something deeper and performance related. The multi-threaded program I use as a benchmark took 17.5 hours to complete and showed an average

Bug#509215: 'top' doesn't report multi-core CPU usage properly w/ default kernel

2008-12-26 Thread Keith Godfrey
I am no longer able to reproduce this bug. Please close it and I will assume that I was somehow doing something wrong (or the computer simply needed a reboot). If I am able to reproduce it again, I shall contact you. Sorry about the apparent false alarm. Best, Keith -Original Message-

Bug#509215: 'top' doesn't report multi-core CPU usage properly w/ default kernel

2008-12-25 Thread Moritz Muehlenhoff
reassign 509215 linux-2.6 thanks Keith Godfrey wrote: > > Hardware: Dell Optiplex > CPU: Core 2 quad > OS: Lenny - fresh install ~Dec 15th > > Testing configuration and report: > I have a pthreads based scientific application that uses ~170% and 250% CPU > usage when running 2 and 3 threads, re

Bug#509215: 'top' doesn't report multi-core CPU usage properly w/ default kernel

2008-12-19 Thread Keith Godfrey
Package: kernel Severity: normal Hardware: Dell Optiplex CPU: Core 2 quad OS: Lenny - fresh install ~Dec 15th Testing configuration and report: I have a pthreads based scientific application that uses ~170% and 250% CPU usage when running 2 and 3 threads, respectively. This behavior has been c