Many, many moons ago, I wrote a program to calculate PI to the nth
decimal place that did the same thing.  (I was in college).

Memory leak comes to mind, do you have any tools, Glance or SOS to
monitor the condition of the system when this occurs?

Please keep us informed of the result.

Thanks,


Craig M. Lalley

Systems Performance Specialist
Lund Performance Solutions
Phone (541) 812-7600 | Email [log in to unmask]
Fax (425) 920-4995| Web www.lund.com

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-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On
Behalf Of John Korb
Sent: Thursday, March 28, 2002 3:05 PM
To: [log in to unmask]
Subject: [HP3000-L] GREP from heck

Anyone run across a case were a grep with a pattern file (example below)
takes over the system to the point were all other NS-VT, telnet, ftp,
sessions drop their connection, but not before all sessions appear to
freeze (including the console)?

The grep in question was of the format:

shell/iX> grep -i -f nums.txt /SHARE/PUB/data/archive/*.* > selected.csv

where the nums.txt file contained 387 phone numbers (987-654-3210), one
number per record.

The user doing the grep was an ordinary user of the SHARE account,
pri=CS.

I even staged two repeats to verify that it was the grep taking over the
system.  The second time I altered SYS and MANAGER.SYS to allow PRI=BS,
and
was on the console with PRI=BS while the grep ran.  About 23 seconds
into
the grep, the console stopped responding, even though I was logged on
PRI=BS.

Any ideas as to how grep could get higher priority than MANAGER.SYS on
the
console, PRI=BS?

John

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