From: ara.t.howard@...
Date: 2006-08-27T23:35:10+09:00
Subject: Re: [ANN] Mongrel 0.3.13.4 Pre-Release -- Ruby's LEAK Fixed (Death To Mutex!)

On Sun, 27 Aug 2006, Daniel Martin wrote:

> ara.t.howard@noaa.gov writes:
>
>> in any case a careful script which allocated memory in a thread,
>> waits for all threads to finish allocation, checks memory, and then
>> kills all threads before checking again shows some suprising results
>> which you should read carefully:
>
> There's a problem with how this script measures its memory usage - it
> measures %MEM, which is proportional to RSS.  However, RSS is just how
> much of the program's memory is *resident*; i.e. not swapped out.
>
> To look at how much total memory is used, the variable you want is
> VSZ, which isn't available in a "ps v" but is in a "ps u".  I modified
> your script to look at the %MEM, VSZ, and RSS numbers from "ps u" and
> also to run GC.start a variable number of times.

good catch!  i'm tweaking my script now....

-a
-- 
to foster inner awareness, introspection, and reasoning is more efficient than
meditation and prayer.
- h.h. the 14th dalai lama