From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EBBD9D729E8 for ; Fri, 29 Nov 2024 15:18:13 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tH2kI-00067r-91; Fri, 29 Nov 2024 10:17:28 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tH2kG-00067S-1V for qemu-devel@nongnu.org; Fri, 29 Nov 2024 10:17:24 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tH2kE-00072H-2F for qemu-devel@nongnu.org; Fri, 29 Nov 2024 10:17:23 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1732893440; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=hCQR5EsafkVoaNMH+bwyjcgM639HWAPYST/OTLF5y5U=; b=CiQnCg+XKhLGysog6WqKyeZmtFAB4HlCUAsCXqpIfWE/GApsrWjPBjfShAXnYHXP77oB10 isIG8dAJ8o0LaETSWsWcQJ5FrGnx6fGCMMTLp8YyAtIJeysXRDXd6S3o96UvJmV3HkCazT CwiokM254W5xUfOpDPolbCXnyam4mKo= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-3-VVMyWZDtPU-F5d8FbnejRA-1; Fri, 29 Nov 2024 10:17:18 -0500 X-MC-Unique: VVMyWZDtPU-F5d8FbnejRA-1 X-Mimecast-MFC-AGG-ID: VVMyWZDtPU-F5d8FbnejRA Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 8664D1955DB5 for ; Fri, 29 Nov 2024 15:17:17 +0000 (UTC) Received: from redhat.com (unknown [10.42.28.37]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 9F32A195605A; Fri, 29 Nov 2024 15:17:14 +0000 (UTC) Date: Fri, 29 Nov 2024 15:17:10 +0000 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: =?utf-8?B?Sm/Do28gVmlsYcOnYQ==?= Cc: qemu-devel@nongnu.org Subject: Re: How to query the number of processes queueing for the CPU inside the VM Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/2.2.13 (2024-03-09) X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.93, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Fri, Nov 29, 2024 at 02:38:52PM +0000, João Vilaça wrote: > In KubeVirt, through libvirt, we need to know the number of processes > queued for the CPU inside the VM. > > Can we get this information through the qemu-guest-agent? The only CPU stats related command in QGA is 'guest-get-cpustat's returning: # @user: Time spent in user mode # # @nice: Time spent in user mode with low priority (nice) # # @system: Time spent in system mode # # @idle: Time spent in the idle task # # @iowait: Time waiting for I/O to complete (since Linux 2.5.41) # # @irq: Time servicing interrupts (since Linux 2.6.0-test4) # # @softirq: Time servicing softirqs (since Linux 2.6.0-test4) # # @steal: Stolen time by host (since Linux 2.6.11) # # @guest: ime spent running a virtual CPU for guest operating systems # under the control of the Linux kernel (since Linux 2.6.24) # # @guestnice: Time spent running a niced guest (since Linux 2.6.33) none of which match your rquest Essentially what you're asking for seems to be the "load average" which is a measure of waiting runnable tasks, over some period (1, 5, 15 minutes typically). I imagine guest-get-cpustat could be enhanced to include load info without too much work. With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|