[Mono-bugs] [Bug 402833] Slow memory allocation in multi-thread app

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Fri Sep 5 05:46:44 EDT 2008


User matteo.tesser at gmail.com added comment

matteo tesser <matteo.tesser at gmail.com> changed:

           What    |Removed                                         |Added
                 CC|                                                |matteo.tesser at gmail.com
             Status|NEEDINFO                                        |NEW
      Info Provider|matteo.tesser at gmail.com                         |

--- Comment #6 from matteo tesser <matteo.tesser at gmail.com>  2008-09-05 03:46:43 MDT ---
Hi, I have added the revised test case (as suggested) and test it on the mono
2.0 preview 2.  The behaviour of the modified test case is the same as the
previous and the bug (slowness of multi-thread applications when threads must
generate new objects) 

On linux (Ubuntu 8.04):
One Thread (method1) time=00:00:00.7478870
One Thread (method2) time=00:00:00.6910520
Two Threads time=00:00:00.3314950    (half)

On Mac (10.5):
One Thread (method1) time=00:00:00.6264570
One Thread (method2) time=00:00:00.6302180
Two Threads time=00:00:06.9052510    (10 times greater)

Note: when there are not memory allocation on secondary threads, performances
are goods on the macs. The problem happens only when new objects are created.


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