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Poor Performance in Domino

Hello all

We have two domino servers hosting about 100 users each.  We use it strictly for mail and do not host any applications.  We are running two 3.0Ghz quad processors with 4GB Ram each.  However, we are seeing very poor performance mainly due to high IO activity - we do receive quite a bit of email (the avg db size is 1GB).  The servers do not run anything else but Domino, and the event logs do not show any relevant errors. There does not appear to be any Domino tasks running amok. I would like to draw on the wealth of experience in EE land and ask:
1) How many users do each of you host on each server?
2) Are there any monitoring tools outside of Domino that can assist?
3) Where would I find some good references for improving performance?

Thanks for your help
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IOIT
Asked:
IOIT
1 Solution
 
marilyngCommented:
1) How many users do each of you host on each server?
       Today's servers can really host a lot of users, 2000- 3000.
       
2) Are there any monitoring tools outside of Domino that can assist?
         http://www.notesbench.org/bench.nsf?OpenDatabase
         
3) Where would I find some good references for improving performance?
      http://www-128.ibm.com/developerworks/lotus/library/ls-perf_intro/

You need to examine and read mail logs in log.nsf and maybe turn on a more verbose reporting so you can see what's happening with your mails.

Also, if you have LOTS of spam, with false hits, that can slow down your server dramatically.  
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SysExpertCommented:
Are these servers directly connected to the Internet ?
Are they behind Firewalls ?

Are they handling SMTP via other servers or doing it directly ?

I would also look into using  an agent or tool to cut back on mail size.

 Is there a retention policy ?

I only keep 30 - 90 days on the Servers.
Did you look at your transaction rates ?

What version are you running ?

I hope this helps !
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nelaya77Commented:
Hai friend,

    U please check up the user's they are using any file indexing, or they is any spam mails are routing your server.  & if you have using any applications, check it up the database size & check it up the user's mail quota's.  If lot of users if they exceed the quota it will affect the performance of the server.

hope it this work.
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RickhalCommented:
Along with the excellent suggestions posted by the other Experts, I would also check to see what tasks are running and when. For example: are you running compact during the day? Or updall? Full text indexing is often a performance killer. Check to see what databases full text indexing is applied to. 100 users is not very many users on a server these days. So, I doubt that is the reason for poor performance. Are you using load balancing? If load balancing is not applied correctly, it can have the opposite affect on a Notes server; degrading performance rather than enhancing it.
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marilyngCommented:
excellent, rickhall!
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RickhalCommented:
Thank You, Marilyng!
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marilyngCommented:
Rickhal, one place, on the day I started work, had the server crashing every 30 minutes.. when I went to check what was going on, every other person, including the IT MANAGER had about ten 2-4 gb FT indexes running on the mail server, ... the result was NO SPACE.  Duh, of course there was no performance.  Poor server had no place to put anything.
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RickhalCommented:
Maryling, I hear you! I can't count the times I have had management turn a deaf ear to my entreaties to either enforce quotas (having the same problem here at the University too!) or buy more storage. And having the data directory go down to dangerously low space. And then to have people create full text indexes on huge mail databases and all manner of wacky agents.....it gets out of hand pretty quickly if allowed to. So many users seem to think of Notes as a file system unto itself and management enables them to do so. All the while complaining when the servers get "sluggish".
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marilyngCommented:
The funny thing about my scenario, it once I deleted all the FT indexes, gee, gosh, I gained 40 GB in free space.  I sometimes wonder about management choices :))  Hey, the only thing worse is being a woman trying to tell management how the stuff is supposed to work.  Hey, funnier.. the guy who let the ft indexes run amok actually got promoted, too.   I tell you, there's simply no justice :)))
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RickhalCommented:
Maryling, Although I can't possibly know how it feels to be a woman technical expert trying to explain to management why a system must be managed for performance, reliability, and growth, I can tell you it ain't all that easy for men either. When I worked at Lotus back in 95-96, I built the Compaq server room that had been the NOC (which moved upstairs to the second floor at the old LDC building on Land Blvd in Cambridge). Plenty of disk space in the beginning. But, as with everywhere I've been, mail files grew (this is in the days before quotas when R4 was brand, spanking new) and grew, and grew....The answer? Put all the VIPs on their own server with tons of disk space. And you can guess what the rest of the users were left with. So, even at Lotus, they didn't get it. Constant issues with disk space and backups, moved mail files and pointers, ad nauseum...... Not long after IBM started taking over, I got fed up and left. I was somewhat of a newbie with Notes back then. And soon found that the same management mentality existed pretty much at most of the companys I've worked for or contracted with since. The difference about the University I'm at now, is that they don't seem to mind spending the $$$ to keep adding to their EMC storage systems. Quotas are set here, but they are "soft" quotas, the euphemism for "we have quotas....wink, wink". The upside for us though, is that they will always need us to bail them out when the inevitable "issues" arise.
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marilyngCommented:
How true, especially today when you really have to save your email for documentation and the Sarbaynes-Oxley law.  I think we have to somehow not make it "look" easy in order to get any respect... ;)
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RickhalCommented:
heh, how true.
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