Messages in this thread | | | Date | Thu, 27 Nov 2008 14:37:47 +0100 | From | "stephane eranian" <> | Subject | Re: [patch 05/24] perfmon: X86 generic code (x86) |
| |
On Thu, Nov 27, 2008 at 2:32 PM, Thomas Gleixner <tglx@linutronix.de> wrote: > On Thu, 27 Nov 2008, stephane eranian wrote: >> That's true for Intel. >> On AMD64, I think you can get at most one sample out of a irq-off >> region using IBS. > > Exactly the same amount which you get with the NMI/self_IPI out of an > irq-off region. > Why would you get only one sample per irq-off region if you use NMI? I would think you could get multiple, depending on your sampling period and the size of the region.
| |