ubuntu-sdk-bugs team mailing list archive

[Colin Ian King <1364404@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Running apps on the phone using qmlscene and just keeping *idle* one can
see ~1.7K per second of heap growth.  I monitored qmlscene for ~570
minutes and observed 58156K of anonymous mapped memory (normally this is
heap) growth.

Running smemstat on qmlscene, for example, an idle calendar app:

ps -ax | grep calendar.qml | grep -v grep
14006 ?        Ssl    8:26 /usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene calendar.qml

smemstat -p 14006 60
Change in memory (average per second):
  PID       Swap       USS       PSS       RSS User       Command
 14006     0.0 B  1706.7 B  1706.7 B  1706.7 B phablet    /usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene
Total:     0.0 B  1706.7 B  1706.7 B  1706.7 B

...etc

This seems to be a similar leak rate to bug 1364380 so it may be a
common library that is the root of the problem.

** Affects: qtdeclarative-opensource-src (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1364404

Title:
  qmlscene is leaking ~1.7K per second on an idle application on the
  phone

Status in “qtdeclarative-opensource-src” package in Ubuntu:
  New

Bug description:
  Running apps on the phone using qmlscene and just keeping *idle* one
  can see ~1.7K per second of heap growth.  I monitored qmlscene for
  ~570 minutes and observed 58156K of anonymous mapped memory (normally
  this is heap) growth.

  Running smemstat on qmlscene, for example, an idle calendar app:

  ps -ax | grep calendar.qml | grep -v grep
  14006 ?        Ssl    8:26 /usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene calendar.qml

  smemstat -p 14006 60
  Change in memory (average per second):
    PID       Swap       USS       PSS       RSS User       Command
   14006     0.0 B  1706.7 B  1706.7 B  1706.7 B phablet    /usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene
  Total:     0.0 B  1706.7 B  1706.7 B  1706.7 B

  ...etc

  This seems to be a similar leak rate to bug 1364380 so it may be a
  common library that is the root of the problem.

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