Is the server cacheing or Mid Tier?
_____________________________________________________________________________________
 


John Atherly  |   APC by Schneider Electric   |  Information, Process & 
Organization (IPO)  |   Remedy Administrator / Developer 
Phone: +401-789-5735 ext. 2120  |   Fax: +401-789-3710  |   
Email: [email protected]  |   Site: www.apc.com/  |   Address: 132 
Fairgrounds Road, West Kingston, RI 02892 USA 
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Rick Cook <[email protected]> 
Sent by: "Action Request System discussion list(ARSList)" 
<[email protected]>
06/28/2011 08:47 AM
Please respond to
[email protected]


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Subject
Re: arserver.exe is consuming 100% cpu - possible DB corruption? (Long 
Post)






** 
We saw on ESX 3.5 that adding CPUs actually slowed performance, due to a 
bug in how the processors were accessed.  Dropping to 1 or 2 helped a lot, 
as did upgrading to v4.
Rick
On Jun 28, 2011 5:33 AM, "Reiser, John J" <[email protected]> wrote:
> Mark,
> I've been working with BMC Support since last week. They have had me 
send many log files trying to capture an event but nothing has shown up 
yet. I'll check into Spotlight.
> 
> Theo,
> Already disabled escalations, alerts etc. I even disabled every filter 
with a notify action because that was the first bit of workflow that would 
send arserver.exe running away. The system still overloads.
> 
> Joe,
> I'll ask the VM admins to check the NIC settings. Since the SQL Server 
is remote and on a huge SAN that side should be ok. The DBA said he saw no 
unusual traffic to the ARSystem db.
> 
> Rick,
> There ARE FOUR Lights. Sorry can you tell I'm losing it.
> The VM has 2 CPUs configured.
> VMware Tools says version 8.3.7 build 341836.
> 
> LJ,
> I've been capturing Filter, thread, API, SQL logs and sent them to BMC 
Support. They see no long queries or transactions that could be causing 
the high cpu usage. I did combine sql and api. I'll add the filter logs 
and see what kind of timing I get between the three.
> 
> Thanks for the feedback.
> If BMC can't solve it today I think I'm going to use Misi's rrrChive and 
export and reload the user data after we rollback the meta(?) data from 
before the problem started.
> 
> 
> --- 
> John J. Reiser 
> Remedy Developer/Administrator 
> Senior Software Development Analyst 
> Lockheed Martin - MS2 
> The star that burns twice as bright burns half as long. 
> Pay close attention and be illuminated by its brilliance. - paraphrased 
by me 
> 
> -----Original Message-----
> From: Action Request System discussion list(ARSList) [mailto:
[email protected]] On Behalf Of Walters, Mark
> Sent: Tuesday, June 28, 2011 4:59 AM
> To: [email protected]
> Subject: EXTERNAL: Re: arserver.exe is consuming 100% cpu - possible DB 
corruption? (Long Post)
> 
> Grab a copy of Spotlight on Windows from www.quest.com and you can use 
it to view the various threads within the arserverd.exe and work out which 
one is causing the high CPU load. Once you have this you can reference the 
thread/sql/api/filter logs to see what activity it is.
> 
> Mark
> 
> I work for BMC, I don't speak for them.
> 
> -----Original Message-----
> From: Action Request System discussion list(ARSList) [mailto:
[email protected]] On Behalf Of Reiser, John J
> Sent: 27 June 2011 22:27
> To: [email protected]
> Subject: arserver.exe is consuming 100% cpu - possible DB corruption? 
(Long Post)
> 
> Hello Listers,
> ARS 7.6.03
> MS 2003 Enterprise
> MS SQL 2005 (remote)
> Total home grown system. No OOTB modules.
> 
> 
> I have a real stumper here. It even has BMC scratching their heads.
> I have a production system that is experiencing cpu overload that runs 
up to 99 in the processes and sits there.
> The ARSystem server is virtual machine. We thought maybe it was a MS 
"Patch Tuesday" issue and we removed the 10 recent MS patches one at a 
time and restarted the machine each time. The problem still exists after 
the arserver service starts. Sometime immediately and sometimes it will 
sit for 1- 20 minutes before it starts to hog the CPUs.
> To eliminate any other OS and file system issues we grabbed a two week 
old backup image of the server and restored it.
> The system came back ok for a short while and then started to lock up 
the CPU again.
> Working with BMC I set the logs on and restarted. We saw the system jump 
to 100% within a minute and captured a 10MB arsql.log file.
> It can force the overload at anytime by firing filter workflow with a 
notification action in it.
> I disabled this one filter but the system still loaded up. I added a 
Filter that ran a 0 and the only action was Goto 1000 to jump all Filter 
actions that fired on the change of the Status field in question.
> Still no joy. 
> I've disabled every piece of Notify workflow. That worked the best and 
kept the system alive for longer stretches but we can't run a system that 
way.
> 
> I've come to the realization that there may be corrupted information in 
the DB object tables and I wanted to get some feedback.
> Using rrrChive I can pull a copy of every form's data since, say, two 
weeks ago. Then have the DBA restore the entire system from that date. 
After the restore I would use rrrChive to reload the two weeks' data 
(Modified date' > "06/11/2011") and hope for the best.
> 
> Any workflow that was changed in the last two weeks is negligible and 
could be recreated/updated as needed.
> 
> Do you think this is a viable solution?
> When I asked the BMC tech if I could dump the T,H & B tables ; restore 
the db and reload the T, H & B tables he reminded me that the arschema and 
other meta tables would probably be out of synch.
> That's when I thought of using rrrChive.
> 
> Sorry to be so long winded but I need to get this back online, BMC can't 
find anything in the logs and I don't want to lose the tickets we've taken 
in the last week.
> 
> 
> 
> 
> ---
> John J. Reiser
> Remedy Developer/Administrator
> Senior Software Development Analyst
> Lockheed Martin - MS2
> The star that burns twice as bright burns half as long. 
> Pay close attention and be illuminated by its brilliance. - paraphrased 
by me 
> 
> 
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