[staf-users] STAF stability & perfomance issue

[Sharon L. <lu...@us...>]

The following question was sent to the staf-users mailing list by Shuki=20
Zaitman but was bounced for some reason.

During STAF investigate there is some issue that unknown & I don?t see any =

mention in the documents
=20
1.      Performance issue. As I saw, STAF processes don?t have any=20
performance issue. Does right?
2.      Stability issue. The plan is that STAF will be running for two=20
weeks. Does any one have experiment with that? What about memory usage &=20
etc.

Answer:

There aren't any known performance issues with STAF processes.

The STAFProc daemon is intended to run for any length of time.  We have=20
run STAFProc for months on many machines.=20

See section "1.10 What is the performance overhead of running STAF?" in=20
the STAF FAQ at http://staf.sourceforge.net/current/STAFFAQ.htm#d0e265 for =

more information about the memory usage, etc.

As a general rule, STAF takes up very little system resources. STAF's=20
in-memory size (without any additional external services) is about 2.5-5=20
MB (depending on the platform). On an idle STAF system (i.e., one in which =

there are no requests currently being handled by STAF) STAF consumes 0%=20
CPU on a Windows system and a VERY limited amount on unix systems. On=20
unix, we have a thread which wakes up once a second to see if any STAF=20
processes have completed. STAF was designed to consume as little system=20
resources as possible, as we know that people want their test systems as=20
close to clean-room conditions as possible.=20


--------------------------------------------------------------
Sharon Lucas
IBM Austin,   lu...@us...
(512) 838-8347 or Tieline 678-8347