From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felix Leimbach Subject: Re: strange guest slowness after some time Date: Tue, 17 Mar 2009 18:01:06 +0100 Message-ID: <49BFD752.9050706@gmx.net> References: <49B29705.6000904@wpkg.org> <49B4E7A6.3090601@redhat.com> <49B4EDC9.9020504@wpkg.org> <49B4EE8F.7050001@redhat.com> <49BD007C.9030809@wpkg.org> <49BF7FB6.9080503@wpkg.org> <49BF8686.5050707@redhat.com> <49BF88BE.7040805@wpkg.org> <49BFC276.1080600@gmx.net> <49BFC53D.3020809@wpkg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: avi@redhat.com, kvm@vger.kernel.org To: Tomasz Chmielewski Return-path: Received: from mail.gmx.net ([213.165.64.20]:55399 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752465AbZCQRBL (ORCPT ); Tue, 17 Mar 2009 13:01:11 -0400 In-Reply-To: <49BFC53D.3020809@wpkg.org> Sender: kvm-owner@vger.kernel.org List-ID: Tomasz Chmielewski wrote: > Felix Leimbach schrieb: >> Out of 3 e1000 guests none has ever been hit. >> >> Observed with kvm-83 and kvm-84 with the host running in-kernel KVM >> code (linux 2.6.25.7) > Could you add a (unused) e1000 interface to your virtio guests? > As this issue happens rarely for me, maybe you could help to reproduce > it as well (i.e. if network gets slow on virtio interface, give e1000 > a IP address, and try if network is also slow on e1000 on the very > same guest). Will do and report > > BTW, what CPU do you have? One dual core Opteron 2212 Note: I will upgrade to two Shanghai Quad-Cores in 2 weeks and test with those as well. processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 65 model name : Dual-Core AMD Opteron(tm) Processor 2212 stepping : 2 cpu MHz : 1994.996 cache size : 1024 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dno wext 3dnow rep_good nopl pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy bogomips : 3990.06 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm stc