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<== Date ==> <== Thread ==>

Subject: Re: client_stat program
From: hill@luke.atdiv.lanl.gov (Jeff Hill)
To: CATimossi@lbl.gov
Cc: tech-talk@aps.anl.gov
Date: Thu, 3 Aug 95 13:34:42 MDT
Chris,

> 
> Does anyone have any information on the 'client_stat' utility ?
> 
> We have run it on one of our IOCs, but I'm not sure how to interpret
> the output. For instance, we see, at the end of the output:
> 
> There are currently 223216 bytes on the server's free list
> {3 client(s), 382 channel(s), and 27 event(s) (monitors)}
> 
> I'm sure we have more than 3 clients and we dont have 382 channels in the
> IOC. Of what significance is the size of the servers free list ?
> 

Free lists are employed by the CA server to avoid fragmenting the 
IOC's memory. When the CA server detects that a client has finished
using a particular data structure then this block of allocated memory
is placed on a free list. The next time that a client needs that
particular sized data structure then the ca server allocates it off
of a free list instead of calling malloc(). The above message indicates
that there are 3 client data structures, 382 channel data structures,
and 27 event data structures on free lists in your IOC. The above
numbers indicate high water marks for resource consumption within your
IOC. For example, at some time in the past the sum of all channels
simultaneously created by clients of your IOC was 382. Likewise at
some time in the past there were 3 clients simultaneously connected 
to your IOC.

Jeff

PS in my previous msg to the exploder I should have said the "LANCE" 
chip and not the "lanse" chip.

______________________________________________________________________
Jeffrey O. Hill			Internet	johill@lanl.gov
LANL MS H820			Voice		505 665 1831
Los Alamos, NM 87545 USA 	FAX		505 665 5107


Replies:
CA server message buffers Peregrine McGehee

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