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Conference cpdev::lotus_notes

Title:Lotus Notes
Moderator:CPDEV::DOUGLAS
Created:Fri Sep 24 1993
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:243
Total number of notes:878

238.0. "Performance on 3 processor 2100" by SNOFS1::HUMMERSTON (I COULD MURDER A CURRY) Wed May 21 1997 02:36

    AlphaServer 2100
    3 x 250MHz CPUs
    1GB RAM
    Lotus Domino V4.5
    NT 3.51
    
    A customer is piloting this configuration to replace a 3 x Dual Pentium
    Pro COMPAQ systems. They have currently turned off one of their COMPAQs
    and moved the users onto the 2100, and are moving other users to the
    2100 with the final goal of geting all 400 users onto a single system.
    
    The customer reports CPU usage between 25 and 70% on the system and is
    not seeing the sorts of performance improvements that they though they
    were going to get. So...
    
    -  it's possible that the performance bottleneck is either network or disk
    IO, I still have to get them to check it out
    - is it possible that the 3 x 250 MHz is of comparable performance to 2
    x PPro 200 Mhz with these applications?
    - is it possible that we can keep adding users to the AlphaServer and
    see no discernable degredation to performance?
    
    The final goal for Digital (via a partner) is to sell them a dual
    466MHz AlphaServer 4100. 
    
    Any and all comments appreciated
    
    Paul
    
    
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238.1doesn't sound like you have any bottlenecks yet ...HYDRA::EGGIMANNTue May 27 1997 20:1131
Hi Paul,

It doesn't sound like you have any bottlenecks yet.  Your observations sound
correct;

    -  it's possible that the performance bottleneck is either network or disk
    IO, I still have to get them to check it out

	Its highly unlikely that you'll have a network bottleneck, and unlikely
	you're disk bound.  What I/O configuration are you running, raid level,
	number of disks in the stripe set?

    - is it possible that the 3 x 250 MHz is of comparable performance to 2
    x PPro 200 Mhz with these applications?

	Yes, this is possible (and likely) if you're not saturing the alpha (which
	you're not).  

    - is it possible that we can keep adding users to the AlphaServer and
    see no discernable degredation to performance?

	Yes, you won't see much difference on the transaction response times
	between the two systems, but Alpha will differentiate by being able to
	handle more users.  So keep adding them ...   And a 4100 466mhz system is
	the right choice to give them some growth ...     

	Just a side note - we recently completed testing on an as1000 5/500 and we
	run more users than a compaq p6/200mhz dual processor configuration (2200 
 	-vs- 2112) indicating we have 2X as much capacity per cpu ...

Pete