[Bug 1201938] Re: excessive memory use from libvirtd

[Serge Hallyn]

** No longer affects: libvirt (Ubuntu Precise)

** No longer affects: libvirt (Ubuntu Quantal)

** No longer affects: libvirt (Ubuntu)

** No longer affects: libvirt (Ubuntu Raring)

** Description changed:

+ ==================
+ SRU Justification
+ 1. Impact: libvirt over time consumes excessive memory due to a call to libnetcf
+ 2. Development fix: a patch to free a path which was being leaked
+ 3. Stable fix: same as development fix
+ 4. Test case: start libvirtd, and connect to it with virt-manager.  Leave that running.  Run top in a terminal, hit 'M' to sort by memory, and watch for RSS for libvirtd to grow.  Give it an hour or two to grow by a few M.
+ 5. Regression potential: there should be none as this only causes a path to be freed (after an earlier check for failure which should ensure the path is in fact allocated).
+ ==================
  libvirtd is using excessive amounts of memory after a week or so of uptime:
  uptime
-  07:47:15 up 9 days, 21:49, 16 users,  load average: 1.06, 2.20, 1.70
+  07:47:15 up 9 days, 21:49, 16 users,  load average: 1.06, 2.20, 1.70
  
  from top (sorry for the truncated line, window got resized before I copied it out.
  18978 root      20   0 7334m 6.6g  672 S   1.0 42.3 504
  
  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: libvirt-bin 1.0.2-0ubuntu11.13.04.2
  ProcVersionSignature: Ubuntu 3.8.0-23.34-generic 3.8.11
  Uname: Linux 3.8.0-23-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  Date: Wed Jul 17 07:44:41 2013
  InstallationDate: Installed on 2013-01-13 (184 days ago)
  InstallationMedia: Ubuntu-Server 12.10 "Quantal Quetzal" - Release amd64 (20121017.2)
  MarkForUpload: True
  SourcePackage: libvirt
  UpgradeStatus: Upgraded to raring on 2013-04-22 (85 days ago)
- --- 
+ ---
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  DistroRelease: Ubuntu 13.04
  InstallationDate: Installed on 2013-01-13 (184 days ago)
  InstallationMedia: Ubuntu-Server 12.10 "Quantal Quetzal" - Release amd64 (20121017.2)
  KernLog:
-  
+ 
  MarkForUpload: True
  Package: libvirt (not installed)
  ProcCmdline: BOOT_IMAGE=/vmlinuz-3.8.0-23-generic root=/dev/mapper/hostname-root ro rootflags=subvol=@
  ProcVersionSignature: Ubuntu 3.8.0-23.34-generic 3.8.11
  Tags:  raring
  Uname: Linux 3.8.0-23-generic x86_64
  UpgradeStatus: Upgraded to raring on 2013-04-22 (85 days ago)
  UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo
  modified.conffile..etc.apparmor.d.usr.lib.libvirt.virt.aa.helper: [modified]
  modified.conffile..etc.apparmor.d.usr.sbin.libvirtd: [modified]
  mtime.conffile..etc.apparmor.d.usr.lib.libvirt.virt.aa.helper: 2013-06-26T00:59:03.272193
  mtime.conffile..etc.apparmor.d.usr.sbin.libvirtd: 2013-06-26T00:58:56.616193

** Changed in: netcf (Ubuntu Precise)
       Status: New => Triaged

** Changed in: netcf (Ubuntu Quantal)
       Status: New => Triaged

** Changed in: netcf (Ubuntu Raring)
       Status: New => Triaged

** Changed in: netcf (Ubuntu Precise)
   Importance: Undecided => High

** Changed in: netcf (Ubuntu Quantal)
   Importance: Undecided => High

** Changed in: netcf (Ubuntu Raring)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1201938

Title:
  excessive memory use from libvirtd

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