From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Qingshu Chen" Subject: How virtio-blk latency can be measured Date: Sun, 15 Dec 2013 16:20:05 +0800 Message-ID: <005501cef96e$7993c810$6cbb5830$@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: <1150163259@qq.com> To: Return-path: Received: from mail-bk0-f49.google.com ([209.85.214.49]:39453 "EHLO mail-bk0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751106Ab3LOIUP (ORCPT ); Sun, 15 Dec 2013 03:20:15 -0500 Received: by mail-bk0-f49.google.com with SMTP id my13so1888640bkb.8 for ; Sun, 15 Dec 2013 00:20:14 -0800 (PST) Content-Language: zh-cn Sender: kvm-owner@vger.kernel.org List-ID: hi,I want to calculate the latencyof virtio in kvm, I read the document in http://www.linux-kvm.org/page/Virtio/Block/Latency and met some problem. 1. when calculating latency in kvm, the document said kvm_pio and kvm_set_irq can be filtered using command 'lspci -vv -nn' and 'cat /proc/interrupts' , but I don't know how to use the result to filter kvm_pio and kvm_set_irq. 2. Anyone know who is the author of this webpage: http://www.linux-kvm.org/page/Virtio/Block/Latency . Thank you