thanks for your reply. the value is very large. is there anyway that i can avoid such frequent exits due to APIC_TMICT? do i need to modify some codes in kvm kernel module or adapt some parameters? Thanks, Sheng On Thu, Jul 12, 2012 at 3:50 AM, Avi Kivity <avi@xxxxxxxxxx> wrote: > On 07/12/2012 02:54 AM, sheng qiu wrote: >> Hi all, >> >> i saw lots of APIC_TMICT exits while running a linux guest with >> assigned NIC. The APIC_TMICT exits is only a little fewer than the >> number of injected interrupts while handling network traffic on the >> assigned NIC. >> The network traffic was generated by running netperf on another >> machine targeted at the VM. >> >> Is this normal? if not, what kind of problem may cause it? > > I'm guessing the driver sets a timer on every interrupt. > > What is the value written? If it's large, perhaps we can set some slack > on the timer so it's not re-set every time. > > > -- > error compiling committee.c: too many arguments to function > > -- Sheng Qiu Texas A & M University Room 332B Wisenbaker email: herbert1984106@xxxxxxxxx College Station, TX 77843-3259 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
