From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) by lore.proxmox.com (Postfix) with ESMTPS id 3CFE11FF17C for ; Wed, 9 Jul 2025 18:43:01 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 4ADA21261E; Wed, 9 Jul 2025 18:43:44 +0200 (CEST) From: Aaron Lauterer To: pve-devel@lists.proxmox.com Date: Wed, 9 Jul 2025 18:36:59 +0200 Message-Id: <20250709163703.2540012-20-a.lauterer@proxmox.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250709163703.2540012-1-a.lauterer@proxmox.com> References: <20250709163703.2540012-1-a.lauterer@proxmox.com> MIME-Version: 1.0 X-SPAM-LEVEL: Spam detection results: 0 AWL -0.021 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DMARC_MISSING 0.1 Missing DMARC policy KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Subject: [pve-devel] [PATCH qemu-server v2 2/4] vmstatus: add memhost for host view of vm mem consumption X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Proxmox VE development discussion Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: pve-devel-bounces@lists.proxmox.com Sender: "pve-devel" The mem field itself will switch from the outside view to the "inside" view if the VM is reporting detailed memory usage informatio via the ballooning device. Since sometime other processes belong to a VM too, vor example swtpm, we collect all PIDs belonging to the VM cgroup and fetch their PSS data to account for shared libraries used. Signed-off-by: Aaron Lauterer --- Notes: changes since: RFC: * collect memory info for all processes in cgroup directly without too generic helper function src/PVE/QemuServer.pm | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/src/PVE/QemuServer.pm b/src/PVE/QemuServer.pm index 01f7a4f..4dd30c4 100644 --- a/src/PVE/QemuServer.pm +++ b/src/PVE/QemuServer.pm @@ -2586,6 +2586,7 @@ sub vmstatus { $d->{uptime} = 0; $d->{cpu} = 0; $d->{mem} = 0; + $d->{memhost} = 0; $d->{netout} = 0; $d->{netin} = 0; @@ -2670,6 +2671,24 @@ sub vmstatus { $d->{pressureiofull} = $pressures->{io}->{full}->{avg10}; $d->{pressurememorysome} = $pressures->{memory}->{some}->{avg10}; $d->{pressurememoryfull} = $pressures->{memory}->{full}->{avg10}; + + my $fh = IO::File->new("/sys/fs/cgroup/qemu.slice/${vmid}.scope/cgroup.procs", "r"); + if ($fh) { + while (my $childPid = <$fh>) { + chomp($childPid); + open(my $SMAPS_FH, '<', "/proc/$childPid/smaps_rollup") + or die "failed to open PSS memory-stat from process - $!\n"; + + while (my $line = <$SMAPS_FH>) { + if ($line =~ m/^Pss:\s+([0-9]+) kB$/) { + $d->{memhost} = $d->{memhost} + int($1) * 1024; + last; + } + } + close $SMAPS_FH; + } + } + close($fh); } return $res if !$full; -- 2.39.5 _______________________________________________ pve-devel mailing list pve-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel