Re: Insufficient Memory on Domino 6 on V5R3

[Chris Whisonant <Chris.Whisonant@xxxxxxxxxxxxx>]

Dennis, here are some guidelines for you:

NSF_BUFFER_POOL_SIZE_MB 
300 MB is default
If you have faulting problems, use the following values from console 
command SHOW STAT DATABASE
        (a) Database.DbCache.HighWaterMark
        (b) Divide that value by 3 for your NSF Buffer Pool Size
        (c) Multiply the Domino storage pool's memory by 3/8 (~1100 for 
you?)
Make sure Domino?s total NSF Buffer Pool (b) doesn?t exceed value of (c)

>From Redbook (Domino 6 for iSeries Best Practices Guide)
The NSF_BUFFER_POOL_SIZE_MB is too small if:
Database.Database.BufferPool.Peak.Megabytes equals 
Database.Database.BufferPool.Maximum.Megabytes and
Database.DbCache.HighWaterMark equals Database.DbCache.MaxEntries
OR
Database.Database.BufferPool.PerCentReadsInBuffer is lower than 95% and 
Database.DbCache.HighWaterMark is about equal to 
Database.DbCache.MaxEntries.
In either of these cases, you should consider increasing 
NSF_BUFFER_POOL_SIZE_MB.
In general, the amount of the increase should not exceed 10% of the 
current value. After you increase the NSF Buffer pool, you need to restart 
the Domino server for the changes to take effect and review the data 
again.

Chris Whisonant
Comporium
Senior Mid-Range Systems Administrator
IBM eServer Certified Systems Expert - iSeries Technical Solutions V5R2
IBM Certified System Administrator - Lotus Notes and Domino 6/6.5
803.326.7270 | 803.326.6142 fax
http://cwhisonant.blogspot.com/



Dennis.Heinle@xxxxxxxx 
Sent by: domino400-bounces+chris.whisonant=comporium.com@xxxxxxxxxxxx
11/15/2005 09:27 AM
Please respond to
Lotus Domino on the iSeries / AS400 <domino400@xxxxxxxxxxxx>


To
domino400@xxxxxxxxxxxx
cc

Subject
Insufficient Memory on Domino 6 on V5R3






I will try and do my best to explain the problem but it has been going on 
for about 6 months now so I might leave something out.

Here are details of the system
iSeries 270 with 3gb ram, 1 partition, ~180gb of storage
We are currently running a Homegrown accounting system (all green screen), 

Domino and websphere.  We don't use websphere currently but it is running.

We started getting "Insufficient memory" on the clients back in April.  We 

tried just restarting notes and that didn't help, I think we had to IPL to 

get domino to work again.  We have since fund out how to clear the shared 
memory through iSeries navigator, so we don't have to IPL it just shutdown 

Domino, cleared the shared memory, start Domino. We would be good for 
about 3-4 weeks before it would happen again.  At the time we were running 

Domino 6.5.   Our business parter suggested we upgrade to 6.5.4 and 
upgrade the ram (we had 2gb, now 3gb.)  we have since done that and the 
errors and domino lock ups come more and more often now.

We have been dealing with IBM but they have not really been any help.  We 
have been sending them memory dumps and other debug info but have not 
gotten a satisfactory answer from them.

We found the ConstrainedShMEM setting on notes.net and set it to 2gb. 
Since then we still get the error messages but the server is not totally 
locked up like it did before. We can actually get into Domino and do some 
poking around before we restart it.

Our NSFBufferSize was set to 300mb and the 
Database.Database.BufferPool.Peak.Megabytes = was always at 300mb.  We 
have since changed it to 500mb and it is usually at 498 now. Should we 
increase this more?

For the last month it has been crashing every Tuesday morning.  The 400 
IPL's on Monday morning and Domino shuts down everynight from 1am to 4am 
for backups. So it IPL's on Monday morning, runs fine all day monday. 
Shuts down Tuesday morning, backs up Domino, restarts at 4am.  By ~5:30am 
on tuesday we start receiving the "insufficient memory errors" in the log 
file, but it doesn't yet effect the end user.  By about 7:30 or so end 
users start getting the message on their desktops.  So we shut down the 
server, clear the shared memory and it usually runs fine until the next 
Tuesday.

Any Ideas?

Last Tuesday afternoon we upgrade to 6.5.4FP2.  It ran fine Tuesday 
afternoon and all day Wednesday, then on Thursday morning we started 
getting the same problem again!

Last week we shutdown Websphere and Apache since we don't currently use 
either (leftover projects from an old employee.) So far this morning, we 
have not gotten any insufficient error messages.

We had Websphere and Apache running before with 6 and with 6.5 and no 
problems that I can recall.


Thank You,

Dennis Heinle, MCSA, CLS, A+, Network+
Enterprise Systems Administrator
Guarantee Electrical  "Legendary Innovation" Since 1902
314-773-1111 x139
Dennis.Heinle@xxxxxxxx
_______________________________________________
This is the Lotus Domino on the iSeries / AS400 (Domino400) mailing list
To post a message email: Domino400@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/domino400
or email: Domino400-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/domino400.