On 09/24/2012 12:19 PM, Xiao Guangrong wrote: > On 09/24/2012 05:48 PM, Avi Kivity wrote: >> On 09/24/2012 07:55 AM, Xiao Guangrong wrote: >>> On 07/10/2012 01:05 AM, Avi Kivity wrote: >>>> Currently, any time a request bit is set (not too uncommon) we check all of them. >>>> This patchset optimizes the process slightly by skipping over unset bits using >>>> for_each_set_bit(). >>>> >>> >>> I also notice that kvm_check_request costs lots of cpu time. What is the status >>> of this patchset? >>> >> >> I had problems getting rid of KVM_REQ_PENDING_TIMER. I'll try again. >> >> In what workloads did you see kvm_check_request()? >> > > Run kernbench on guest, and use perf to sample, this function is really > hot. > I don't see it at all. Westmere, 4-way guest. -- error compiling committee.c: too many arguments to function -- 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
