[Webware-discuss] CPU Usage Pattern

[Tim R. <ti...@pr...>]

OK, I admit to knowing almost nothing about the way tasks are allocated 
between threads in WebWare, but I happened to do a "ps axf" today on a 
machine that has been running  for about 8 months, and saw this:

 1622 ?        SN     0:00 /bin/sh ./AppServer
19647 ?        SN    49:47  \_ python Launch.py ThreadedAppServer
19648 ?        SN     1:48      \_ python Launch.py ThreadedAppServer
19649 ?        SN   142:38          \_ python Launch.py ThreadedAppServer
19650 ?        SN     0:00          \_ python Launch.py ThreadedAppServer
19651 ?        SN   117:47          \_ python Launch.py ThreadedAppServer
19652 ?        SN     0:00          \_ python Launch.py ThreadedAppServer
19653 ?        SN     0:00          \_ python Launch.py ThreadedAppServer
19654 ?        SN     0:00          \_ python Launch.py ThreadedAppServer
19655 ?        SN     0:00          \_ python Launch.py ThreadedAppServer
19656 ?        SN     0:00          \_ python Launch.py ThreadedAppServer

Notice the uneven distribution of CPU times.  Now, if the threads are 
tasked sequentially, so that thread 2 is used only if thread 1 is 
already busy, then this makes sense; it says I often had 2 simultaneous 
requests, but never more than 2.

Is that actually how tasks are assigned to threads?

-- 
- Tim Roberts, ti...@pr...
  Providenza & Boekelheide, Inc.