Re: Domino Utilities and Server Performance Issues -- DOMINO400


You're not wrong there... I think there's definitely more to the story that
he's not getting from the guy that told him about the data being
concentrated on 6 disks.
                                                                       
             Chris Whisonant                                           
             <Chris.Whisonant@                                       
             comporium.com>                                             To
             Sent by:                  Lotus Domino on the iSeries / AS400
             domino400-bounces         <domino400@xxxxxxxxxxxx>      
             +chadb=wheeling-n                                          cc
             isshin.com@midran                                       
             ge.com                                                Subject
                                       Re: Domino Utilities and Server 
                                       Performance Issues              
             01/25/2007 01:08                                          
             PM                                                        
                                                                       
                                                                       
             Please respond to                                         
              Lotus Domino on                                          
               the iSeries /                                           
                   AS400                                               
             <domino400@midran                                         
                  ge.com>                                            
                                                                       
                                                                       




Correct me if I'm wrong, but i5/OS doesn't create data like that. I would
be REALLY curious to see how this person determined that ALL of the Domino
data was only on 1/4 of the disks. Are those disks separated in a user
ASP? That could be possible, but you would have had to poing the
/LOTUS/DATA directory to that user ASP...

Chris Whisonant
Senior Mid-Range Systems Administrator
Comporium
803-326-7270
IBM Certified Specialist -- eServer i5 iSeries Domino Technical Solutions
V5R3
IBM eServer Certified Systems Expert - iSeries Technical Solutions V5R2
IBM Certified System Administrator - Lotus Notes and Domino 6/6.5
IBM Certified System Administrator - Lotus Notes and Domino 7
IBM Certified Associate Developer - Lotus Notes and Domino 6/6.5

domino400-bounces+chris.whisonant=comporium.com@xxxxxxxxxxxx wrote on
01/25/2007 08:24:16 AM:


How much cache is on the controller that controls the drives on the

iSeries

box that hosts Domino?  Domino seems to really perform better with a

hefty

amount of disk controller cache.

Of course that doesn't explain why things were fine, then got bad.  I'm

not

sure what was the event that concentrated your Domino specific stuff on

of the 22 drives... i'd have the guy who found that situation keep

digging

further into it!  He should also be able to talk with IBM support for

some

possible reasons why...


             JDelRisco@oshtruc
             k.com
             Sent by: To
             domino400-bounces         domino400@xxxxxxxxxxxx
             +chadb=wheeling-n cc
             isshin.com@midran
             ge.com Subject
                                       Domino Utilities and Server
                                       Performance Issues
             01/24/2007 06:23
             PM


             Please respond to
              Lotus Domino on
               the iSeries /
                   AS400
             <domino400@midran
                  ge.com>







Hello Everyone,

I have been experiencing Lotus Notes performance issues since Monday
morning.  At first we thought the problem to be a run away process (

Router

task on a server was running at 80-90% for about 35min and it wasn't

doing

anything ).  Since then ( Monday at 10:35am ), CPU for the entire LPAR

has

been averaging 30% and peaking at 65%.  Still, as of the time of this
email, we are seeing intermittent performance issues. And by that I

mean,

everything seems to run normally then for some seemingly random reason,

it

take upwards of 4 minutes just to open an email that does not have an
attachment or switch to a different folder view, etc.  We sniffed the
network and found no network issues occurring during these moments that
Lotus Notes runs slow.  These moments tend to last about 5-10 minutes

and

all goes back to normal.  The performance problems to not seem to tie

into

any server task or event taking place.

After eliminating CPU we checked Memory.  The iSeries guru at our
organization informed me that there didn't appear to be any memory

issues

but did notice that 6 of our disks ( of 22 ) were being hit hard.  When

he

did some further digging he noticed that ALL of the data for all 10

server

instances on our LPAR were all on 6 of the 22 disks that we have.  This

was

not the case last week.  It would seem that the performance issues were
related to disk and he is performing a task to evenly distribute the

data

among the 22 disks by usage.  Now you are all probably wondering, "How

did

all the data end up on just 6 disks when it was spread across 22 last
week?"......  That, my friends, is the $100,000 question.  If anyone has
any ideas I would love to hear them.  Some background info.

Saturday night we applied PTF's to the LPAR.
We also ran Fixup on 3 of our server, and Updall -r  on 2 of the 3

servers

that Fixup was run on.

That is the extent of the changes that occurred this weekend.  I have a
directors meeting in the morning at which they will be asking me why

Lotus

Notes is running slow.  I believe I have determined what was the problem
but not the root cause.  If anyone can send me idea before 9am tomorrow.
Feel free to ask me any questions, I will provide as much detail as I

can.


Thanks,

Jose del Risco
Corporate Domino Administrator
Oshkosh Truck Corporation

(920) 235.9151  x 2741


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