[Bug 871515] Re: rsync consumes a lot of RAM on 11.04 64 bits (Memory Leak?)

[Serge Hallyn]

Thanks for reporting this bug.  Please reply if it is still an issue on
a supported release.


** Changed in: rsync (Ubuntu)
       Status: New => Invalid

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Title:
  rsync consumes a lot of RAM on 11.04 64 bits (Memory Leak?)

Status in “rsync” package in Ubuntu:
  Invalid

Bug description:
  I have a Dell R900 with Ubuntu 11.04 x64 recently upgraded from Ubuntu 10.04 LTS x64.
  I have notice that doing an rsync from the server to a external USB HD consumes about 10 Gb of ram. The server has 128 Gb of ram installed. The rsync never finish and the process just dies with 

  rsync error: error allocating core memory buffers (code 22)

  I notice the memory consumption running

  sudo pmap -d "rsync pid"

  The memory usage keeps growing and growing until the process get
  killed. I also notice that a Bacula backup I had set up on the sever
  before the upgrade, started to fail after upgrading to 11.04. The
  bacula process is having memory issues too. The kernel I'm using is
  2.6.38-8-server x86_64. Before upgrading to 11.04 the backup and the
  rsync process never failed at all.

  On a side note, I tried the very same rsync on an older Dell server we
  have with 11.04 32 bits. This server has only 8 Gb of RAM and to my
  surprise, the rsync finished with no problems at all the kernel on
  this server is 2.6.38-8-generic-pae i686. pmap reported no more than
  700 Mb of memory usage for the rsync process.

  I tried the same rsync on a desktop with 11.04 x64 with 6 Gb of RAM
  and the rsync failed again making the desktop crash. The desktop has
  the 2.6.38-11-generic x86_64 kernel installed. I also decided to try
  the 32 bits version of 11.04 on a desktop and the rsync finished just
  fine on that one too.

  In summary, the rsync worked on: 11.04 2.6.38-8-generic-pae i686 and
  failed on: 11.04 2.6.38-8-server x86_64

  With 10.04 x64 the R900 never had an issue at all. RAM is not a
  limitation on this one either.

  Is there a big memory leak on 11.04 x64?

  Please excuse my English.

  Thanks a lot for your comments on this.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: rsync 3.0.7-2ubuntu3
  ProcVersionSignature: Ubuntu 2.6.38-8.42-server 2.6.38.2
  Uname: Linux 2.6.38-8-server x86_64
  Architecture: amd64
  Date: Sun Oct  9 17:21:11 2011
  InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64 (20110426)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: rsync
  UpgradeStatus: No upgrade log present (probably fresh install)

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