Re: [Qemu-devel] ping latency issue on passthrough guest

2018-05-14 Thread Zhu Yijun
Hi Alexey, thanks for your advise. 2018-05-14 14:13 GMT+08:00 Alexey Kardashevskiy : > On 11/5/18 5:20 pm, Zhu Yijun wrote: >> Hi all, >> >> I booted two sr-iov guests using KVM-VFIO and pinged each other with >> no-load one night. I found that most of the latency was little than 0.1ms, >> but s

Re: [Qemu-devel] ping latency issue on passthrough guest

2018-05-14 Thread Zhu Yijun
Hi Alex, Thanks for your reply, I will try to assign PF to VM and test. 2018-05-11 22:26 GMT+08:00 Alex Williamson : > On Fri, 11 May 2018 15:20:05 +0800 > Zhu Yijun wrote: > >> Hi all, >> >> I booted two sr-iov guests using KVM-VFIO and pinged each other with >> no-load one night. I found

Re: [Qemu-devel] ping latency issue on passthrough guest

2018-05-13 Thread Alexey Kardashevskiy
On 11/5/18 5:20 pm, Zhu Yijun wrote: > Hi all, > > I booted two sr-iov guests using KVM-VFIO and pinged each other with > no-load one night. I found that most of the latency was little than 0.1ms, > but several icmp_seq greater than 10ms, even up to 1000ms; > [...] > >VF used by these two

Re: [Qemu-devel] ping latency issue on passthrough guest

2018-05-11 Thread Alex Williamson
On Fri, 11 May 2018 15:20:05 +0800 Zhu Yijun wrote: > Hi all, > > I booted two sr-iov guests using KVM-VFIO and pinged each other with > no-load one night. I found that most of the latency was little than 0.1ms, > but several icmp_seq greater than 10ms, even up to 1000ms; > > root@test-ping

[Qemu-devel] ping latency issue on passthrough guest

2018-05-11 Thread Zhu Yijun
Hi all, I booted two sr-iov guests using KVM-VFIO and pinged each other with no-load one night. I found that most of the latency was little than 0.1ms, but several icmp_seq greater than 10ms, even up to 1000ms; root@test-ping01:~# grep "time=[0-9][0-9]" outputfile Mon May 7 23:05:12 201864 b