| Title: | The Replication Option for Rdb |
| Notice: | Product renamed to Replication Option for Rdb |
| Moderator: | BROKE::PROTEAU |
| Created: | Wed Mar 02 1994 |
| Last Modified: | Wed Jun 04 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 287 |
| Total number of notes: | 1231 |
Alpha 6.2 Rdb 7.0.0.1 Replication 7.0:
Once I start the replication monitor, it grabs 15% of my system's
memory. This seems way too much to me for a monitor in 'standby' (i.e
not actively used).
Is there something I can do to decrease this percentage?
Thanks,
Regina
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 287.1 | UKVMS3::PJACKSON | Oracle UK Rdb Support | Wed May 28 1997 08:40 | 3 | |
How are you measuring this 15%?
Peter
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| 287.2 | CHSR38::RROHR | Cajun? Zydeco? Both! | Wed May 28 1997 12:18 | 13 | |
Well, I was investigating memory problems and started removing things I
had installed lately to find the culprit. When I stopped the monitor,
according to MONITOR CLUSTER, there was 15% more memory available.
I stopped and restarted several times and the result stayed the same.
I agree this is not very sophisticated, but I saw what I saw. 15% up,
15% down.
/Regina
PS: At the moment I tend to believe my mem problems come from another
culprit, but I am still curious about what I observed.
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| 287.3 | Bug it if necessary | BROKE::PROTEAU | Jean-Claude Proteau | Wed May 28 1997 14:51 | 5 |
This product has been around for 10 years and I don't recall memory
usage being an issue before. It's possible something got changed. If
you believe there's a problem we should correct, please get some
numbers and post a bug report.
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| 287.4 | UKVMS3::PJACKSON | Oracle UK Rdb Support | Thu May 29 1997 05:47 | 12 | |
You are placing too much reliance on monitor cluster. The memory in use
figure does not indicate how much memory is in use. On VMS unless the
system is almost idle 100% of the memory will be being used. For
example the free list is used as a cache to reduce hard paging. Also
the quieter the system the more memory each individual process will
have reserved. On a busy system the working set for the process will
be reduced to free memory for other processes, until this reduction
causes paging to increase. The 15% is probably something near the
maximum memory the process will use. The interesting number is the
minimum needed to avoid heavy paging.
Peter
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