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19991112: 19991109: LDM memory leak on IRIX64 (fwd)
- Subject: 19991112: 19991109: LDM memory leak on IRIX64 (fwd)
- Date: Fri, 12 Nov 1999 09:06:30 -0700 (MST)
===============================================================================
Robb Kambic Unidata Program Center
Software Engineer III Univ. Corp for Atmospheric Research
address@hidden WWW: http://www.unidata.ucar.edu/
===============================================================================
---------- Forwarded message ----------
Date: Fri, 12 Nov 1999 08:46:48 -0700
From: Unidata Support <address@hidden>
To: Tom Yoksas <address@hidden>, address@hidden,
address@hidden, address@hidden
Subject: 19991112: 19991109: LDM memory leak on IRIX64
One note of clarification after I saw Robb's response to Tom engle:
The ldmadmin script sets the queue size to 250MB on dataproc.
That is the size of the current queue on dataproc:
-rw-rw-r-- 1 ldmdp ncar 258818048 Nov 8 22:50 ldm.pq
So the queue is not growing. So, they are not seeing any problem
with a growable queue. The memory map usage has just grown over time to
match that of the product queue usage from what I see.
Chiz
>From: Tom Yoksas <address@hidden>
>Organization: .
>Keywords: 199911120843.BAA12135
>
>Robb et. al.,
>
>Tom Engel of SCD sent me this note on the 9th. I just had today got to
>login and see it. Can you respond to Tom?
>
>Tom
>
>------- Forwarded Message
>
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> Tue, 9 Nov 1999 07:38:29 -0700 (MST)
>Date: Tue, 9 Nov 1999 07:38:29 -0700 (MST)
>From: Tom Engel <address@hidden>
>Message-Id: <address@hidden>
>To: address@hidden, address@hidden
>Subject: LDM processes on dataproc
>
>Tom Yoksas, et.al.:
>
>It appears as if there's a relatively severe memory leak in the
>LDM processes ... specifically:
>
>Below are snapshots of the size of four LDM processes on dataproc
>at the beginning of each day over the last week. As you can see,
>each of the processes "rpc.ldmd", "pqexpire", "pqact" and "pqbinstat"
>have doubled in size during the last week.
>
>Since dataproc is a production, interactive system, shared among
>numerous users, such unrestricted growth of daemons isn't good.
>
>A question:
>* Has UNIDATA seen such behavior in other systems? If so, what
> is UNIDATA's advice for dealing with this in an operational
> setting?
>
>Two suggestions:
>1. the LDM system should be shut down and restarted on dataproc
> in order to return the memory back to users
>2. UNIDATA should investigate and repair the memory leak.
>
>Thanks,
>Tom
>- ------------------------ Tom Engel --- Head, High Performance Systems Sectio
> n
>Scientific Computing Division NCAR, P. O. Box 3000, Boulder, CO 80307-3000
>Phone 303-497-1270 Fax 303-497-1848 Pager 800-306-1988 (address@hidden)
>
>
>991103
>APS: RESM(kB) TOTM(kB) TTY_____ USERTIME USER____ COMMAND________
>
>APS: 110208 254688 ? 33:51 ldmdp rpc.ldmd
>
>APS: 110016 254496 ? 22:07 ldmdp pqexpire
>
>APS: 109552 254560 ? 26:33 ldmdp pqact
>
>APS: 103392 254864 ? 28:30 ldmdp pqbinstat
>
>
>991104
>APS: RESM(kB) TOTM(kB) TTY_____ USERTIME USER____ COMMAND________
>
>APS: 110352 254688 ? 42:16 ldmdp rpc.ldmd
>
>APS: 110160 254496 ? 25:54 ldmdp pqexpire
>
>APS: 109648 254560 ? 32:15 ldmdp pqact
>
>APS: 107584 254864 ? 33:45 ldmdp pqbinstat
>
>
>991105
>APS: RESM(kB) TOTM(kB) TTY_____ USERTIME USER____ COMMAND________
>
>APS: 124976 254688 ? 59:13 ldmdp rpc.ldmd
>
>APS: 124784 254496 ? 34:53 ldmdp pqexpire
>
>APS: 123856 254560 ? 42:02 ldmdp pqact
>
>APS: 120656 254864 ? 42:03 ldmdp pqbinstat
>
>
>991106
>APS: RESM(kB) TOTM(kB) TTY_____ USERTIME USER____ COMMAND________
>
>APS: 125008 254688 ? 72:07 ldmdp rpc.ldmd
>
>APS: 124784 254496 ? 41:24 ldmdp pqexpire
>
>APS: 123856 254560 ? 50:35 ldmdp pqact
>
>APS: 123632 254864 ? 49:03 ldmdp pqbinstat
>
>
>991107
>APS: RESM(kB) TOTM(kB) TTY_____ USERTIME USER____ COMMAND________
>
>APS: 214992 254688 ? 87:11 ldmdp rpc.ldmd
>
>APS: 214768 254496 ? 49:05 ldmdp pqexpire
>
>APS: 213840 254560 ? 59:59 ldmdp pqact
>
>APS: 200240 254864 ? 57:03 ldmdp pqbinstat
>
>
>991108
>APS: RESM(kB) TOTM(kB) TTY_____ USERTIME USER____ COMMAND________
>
>APS: 219376 254688 ? 93:27 ldmdp rpc.ldmd
>
>APS: 219152 254496 ? 53:15 ldmdp pqexpire
>
>APS: 218224 254560 ? 64:35 ldmdp pqact
>
>APS: 206016 254864 ? 61:25 ldmdp pqbinstat
>
>
>991109
>APS: RESM(kB) TOTM(kB) TTY_____ USERTIME USER____ COMMAND________
>
>APS: 248432 254688 ? 101:10 ldmdp rpc.ldmd
>
>APS: 248176 254496 ? 58:07 ldmdp pqexpire
>
>APS: 247248 254560 ? 70:12 ldmdp pqact
>
>APS: 236368 254864 ? 66:45 ldmdp pqbinstat
>
>------- End of Forwarded Message
>
