[Bug 503841] [NEW] Ktorrent uses masses of memory after some time running

[IanBall]

Public bug reported:

Binary package hint: ktorrent

After a few hours, ktorrent and it's kio_file slaves use masses of
memory.  I have Ubuntu 9.10 on an AMD64 system, 4Gb ram.  this renders
the system extremely slow as almost everything is swapped out.  Quitting
from ktorrent frees the memory.  Simply minimising or leaving it in the
system tray does not help.  I am sharing two 1.5Gb files.

>From top sorting by memory usage:
top - 11:45:58 up 3 days, 13:53,  1 user,  load average: 2.39, 1.09, 0.62
Tasks: 176 total,   4 running, 171 sleeping,   0 stopped,   1 zombie
Cpu(s):  3.3%us,  4.0%sy,  0.3%ni, 47.5%id, 44.4%wa,  0.0%hi,  0.5%si,  0.0%st
Mem:   4060760k total,  4030836k used,    29924k free,      312k buffers
Swap:  4104504k total,  2554140k used,  1550364k free,    20120k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
14187 ian       20   0 2501m 1.3g  876 R    0 33.9  23:50.29 kio_file
14188 ian       20   0 2501m 1.3g  876 R    1 33.8  23:59.10 kio_file

And another time:
top - 02:10:27 up 3 days,  8:46,  1 user,  load average: 3.26, 3.26, 2.74
Tasks: 175 total,   2 running, 173 sleeping,   0 stopped,   0 zombie
Cpu(s):  1.2%us,  1.0%sy,  0.0%ni,  0.3%id, 97.3%wa,  0.2%hi,  0.0%si,  0.0%st
Mem:   4060760k total,  4032604k used,    28156k free,      304k buffers
Swap:  4104504k total,  2050768k used,  2053736k free,    20012k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
14937 ian       20   0 3576m 3.2g    8 D    0 82.1  34:54.35 kio_file


As you can see, the system is totally bogged down in wait states while it waits for hard drive i/o.

** Affects: ktorrent (Ubuntu)
     Importance: Undecided
         Status: New

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Ktorrent uses masses of memory after some time running
https://bugs.launchpad.net/bugs/503841
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