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- Path: sparky!uunet!wupost!darwin.sura.net!dtix!condor.navsses.navy.mil!system
- From: system@condor.navsses.navy.mil
- Newsgroups: vmsnet.internals
- Subject: Re: Maximum wsmax: can it be increased ?
- Message-ID: <1992Nov20.145100.351@condor.navsses.navy.mil>
- Date: 20 Nov 92 19:51:00 GMT
- References: <01GRDFI4HY2A8WVZBS@MONMOUTH-etdl1.Army.MIL>
- Organization: NSWCCD, Naval Ship Systems Eng Sta, Phila PA
- Lines: 37
-
- In article <01GRDFI4HY2A8WVZBS@MONMOUTH-etdl1.Army.MIL>, Brian J. Schenkenberger, VAXman writes:
- > I've never done this but... I can offer you a quick method to change
- > the value.
- >
- > The value for WSMAX is stored at the symbolic address SGN$GL_MAXWSCNT.
- > You can change this value WHILE THE SYSTEM IS RUNNING with DELTA. How?
- > Lookup the address of SGN$GL_MAXWSCNT in SYS.MAP. Then, enter DELTA.
- >
- > $ RUN SYS$SHARE:DELTA
- > 1:m <cr>
- > 00000001 <cr>
- > 00010001:<address of SGN$GL_MAXWSCNT>/<return-curr-value> <your-new-value>
- > EXIT (hex of course)
- > $
- >
- >>Caveats ? :-)
- >
- > This above will change the value. Its implications if you increase it
- > above the current limits? I know not! I just LOWERed my system's WSMAX
- > by 16 with the above and have had no problems.
- >
- You should have no problems if you LOWER the value of WSMAX this way, but you
- WILL have some if you RAISE it. WSMAX is a parameter that is used to calculate
- the size of a balance set slot (which is done early in the boot process). If
- you raise the value of WSMAX beyond the value it had at system startup the
- system will overwrite the head of one balance slot when it is trying to use the
- tail of the previous one, thus corrupting the PHD of a resident process, which
- will shortly cause a crash or hang of the entire system.
-
-
- --
- Mike Jacobi
- NAVSSES VAXCluster system manager
- System@Eagle.Navsses.Navy.Mil
- System@Condor.Navsses.Navy.Mil
-
- Disclaimer - I speak for myself. No-one else.
-