From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42593) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bFGwe-00074d-9h for qemu-devel@nongnu.org; Tue, 21 Jun 2016 04:22:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bFGwZ-0002X3-0J for qemu-devel@nongnu.org; Tue, 21 Jun 2016 04:22:03 -0400 Received: from mx-v6.kamp.de ([2a02:248:0:51::16]:36191 helo=mx01.kamp.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bFGwY-0002WN-Mw for qemu-devel@nongnu.org; Tue, 21 Jun 2016 04:21:58 -0400 From: Peter Lieven Message-ID: <5768F923.7040502@kamp.de> Date: Tue, 21 Jun 2016 10:21:55 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Qemu and heavily increased RSS usage List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "qemu-devel@nongnu.org" Hi, while upgrading from Qemu 2.2.0 to Qemu 2.5.1.1 I noticed that the RSS memory usage has heavily increased. We use hugepages so the RSS memory does not include VM memory. In Qemu 2.2.0 it used to be ~30MB per vServer and increased to up to 300 - 400MB for Qemu 2.5.1.1 (same with master). The memory increases over time, but seems not to grow indefinetly. I tried to bisect, but had no result so far that made sense. I also tried valgrind / massif, but valgrind does not see the allocation (at least at exit) and massif fails to rund due to - so it pretends - heap corruption. Any help or ideas how to debug further would be appreciated. Cmdline is: ./x86_64-softmmu/qemu-system-x86_64 -enable-kvm -M pc-i440fx-2.1 -nodefaults -netdev type=tap,id=guest3,script=no,downscript=no,ifname=tap0,vnet_hdr -device virtio-net-pci,netdev=guest3,mac=52:54:00:ff:08:5e -iscsi initiator-name=iqn.2005-03.org.xx:0025b5d0011f -drive format=raw,discard=on,file=iscsi://172.21.200.56/iqn.2001-05.com.equallogic:0-8a0906-98f384e0a-7d2004ee0a85767a-00lieven-test/0,if=none,cache=writeback,aio=native,id=disk0 -object iothread,id=iothread0 -device virtio-blk-pci,drive=disk0,iothread=iothread0 -global virtio-blk-pci.scsi=off -serial null -parallel null -m 4096 -smp 4,sockets=1,cores=4,threads=1 -monitor tcp:0:4004,server,nowait,nodelay -qmp tcp:0:3004,server,nowait,nodelay -name lieven-test -boot order=c,once=dc,menu=off -k de -mem-path /hugepages -mem-prealloc -cpu Westmere,enforce -rtc base=utc -usb -usbdevice tablet -no-hpet -vga vmware Thanks, Peter