On Thu, Jun 4, 2009 at 1:37 PM, Theo Band <theo.band at greenpeak.com> wrote: > I have a quad core CPU running Centos5. > > When I use top, I see that running processes use 245% instead of 100%. > If I use gkrellm, I just see one core being used 100%. Press 1 in top to see the per CPU info > > top: > PID USER PR NI VIRT RES SWAP SHR S %CPU %MEM TIME+ COMMAND > 18037 thba 31 15 304m 242m 62m 44m R 245.3 4.1 148:58.72 ic > > Also in the log of some programs I see this strange factor: > CPU Seconds = 2632 Wall Clock Seconds = 1090 > > There are all single threaded programs, so it's not that more cores are > being used. > > [thba at fazant]$ uname -a > Linux fazant 2.6.18-128.1.6.el5 #1 SMP Wed Apr 1 09:10:25 EDT 2009 > x86_64 x86_64 x86_64 GNU/Linux > > > [thba at fazant]$ cat /proc/cpuinfo > processor : 0 > vendor_id : GenuineIntel > cpu family : 6 > model : 26 > model name : Intel(R) Core(TM) i7 CPU 940 @ 2.93GHz > stepping : 4 > cpu MHz : 1600.000 > cache size : 8192 KB > physical id : 0 > siblings : 4 > core id : 0 > cpu cores : 4 > apicid : 0 > fpu : yes > fpu_exception : yes > cpuid level : 11 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge > mca cmov pat pse36 clflush dts acpimmx fxsr sse sse2 ss ht tm syscall nx > rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 > cx16 xtpr popcnt lahf_lm > bogomips : 5871.54 > clflush size : 64 > cache_alignment : 64 > address sizes : 36 bits physical, 48 bits virtual > power management: [8] > > Any ideas? > > Thanks, > Theo > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >