On Saturday 09 August 2008 10:36:41 Sander van Vugt wrote: > Hi List, > > I notices something I don't understand in the vmstat -s output. In other > Linux distributions I know, the amount of interrupts is always much > higher than the amount of context switches. As far as I know, that from > the operating system perspective is also what you would expect, as a > context switch needs a timer interrupt to do its work. Now when I do > vmstat -s on Ubuntu Server 8.04, the amount of context switches is about > 5 times as high as the amount of interrupts, where I would expect the > exact opposite. Can anyone explain this? Is this a specific Ubuntu feature? > > Thanks, > Sander
Sander, I also believe that this is the tickless kernel. Could you verify that you are fewer interrupts and not more context switches then expected. Rick Clark Manager, Ubuntu Server Team
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