ICal Server and Python causing max CPU usage on 10.5.1 server

We are having an issue with iCal Server where a python process is monopolizing the CPU (70%-95%) to the point everything grinds to a halt. Once iCal is stopped, then started again it will be ok for anywhere from 10 minutes to a few hours before it starts all over again.
caldavd error Log is being bombarded with what looks like every transaction. See example below:
2008-01-07 11:26:46-0600 [-] [caldav-8008] [HTTPChannel,4634,192.168.1.139] PROPFIND /principals/_uids_/BA237A85-F880-4A89-B1C1-F07E72A1508E/ HTTP/1.1
This may be completely unrelated, but the DirectoryService process seems to be running high (35%-40%) as well.
Any help would be greatly appreciated!
Fun Facts:
G5 Xserve - Dual 2.0
4GB RAM
Mac OS 10.5.1 Server
DNS seems to be in working order

Server is running with a FQDN and functioning kerberos. The only thing regarding python twisted framework or close to it is when iCal server starts.
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Log opened.
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] twistd 2.5.0 (/System/Library/Frameworks/Python.framework/Versions/2.5/Resources/Python.app/ Contents/MacOS/Python 2.5.1) starting up
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] reactor class: <class 'twisted.internet.selectreactor.SelectReactor'>
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Configuring directory service of type: twistedcaldav.directory.appleopendirectory.OpenDirectoryService
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] "Directory service <OpenDirectoryService '/Search': '/Search'> has no GUID; generating service GUID from realm name."
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Configuring SudoDirectoryService with file: /etc/caldavd/sudoers.plist
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Setting up document root at: /Library/CalendarServer/Documents
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Setting up principal collection: <class 'twistedcaldav.directory.principal.DirectoryPrincipalProvisioningResource'>
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Setting up calendar collection: <class 'twistedcaldav.static.CalendarHomeProvisioningFile'>
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Setting up root resource: <class 'twistedcaldav.root.RootResource'>
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Setting up default ACEs on root resource
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Setting up AdminPrincipals
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Setting root ACL
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Configuring authentication for realm: /Search
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Setting up scheme: kerberos
2008-01-07 18:25:37-0600 [-] [caldav-8008] [-] Setting up scheme: digest
2008-01-07 18:25:39-0600 [-] [caldav-8008] [-] Configuring authentication wrapper
2008-01-07 18:25:39-0600 [-] [caldav-8008] [-] Setting up service
2008-01-07 18:25:39-0600 [-] [caldav-8008] [-] Configuring log observer: <twistedcaldav.logging.AMPCommonAccessLoggingObserver object at 0x147a7f0>
2008-01-07 18:25:39-0600 [-] [caldav-8008] [-] Adding server at :8008
2008-01-07 18:25:39-0600 [-] [caldav-8008] [-] twisted.web2.channel.http.HTTPFactory starting on 8008
2008-01-07 18:25:39-0600 [-] [caldav-8008] [-] Starting factory <twisted.web2.channel.http.HTTPFactory instance at 0x146fc10>
2008-01-07 18:25:39-0600 [-] [caldav-8008] [-] set uid/gid 93/93
2008-01-07 18:25:39-0600 [twistedcaldav.logging.AMPLoggingFactory] AMPLoggingProtocol connection established (HOST:UNIXSocket('/var/run/caldavd.sock') PEER:UNIXSocket(''))
2008-01-07 18:25:39-0600 [-] [caldav-8008] [-] AMP connection established (HOST:UNIXSocket(None) PEER:UNIXSocket('/var/run/caldavd.sock'))

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Hi,
There is a similar thread, please change the performance options in WSB from fast to normal:
wbengine.exe taking all CPU
http://social.technet.microsoft.com/Forums/en-US/be5d5743-1ea7-4c26-8072-0c010b47dd9a/wbengineexe-taking-all-cpu?forum=winserveressentials
If the issue still exists, please check if there any error message in the Event Log.
Best Regards,
Mandy
We
are trying to better understand customer views on social support experience, so your participation in this
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Hi,
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Hi, I am hoping someone here may have an idea of what I can do to resolve this as I am not much of a SQL guy. Here is what I know. Throughout the day, monday-friday, my ConfigMgr SQL server sits at 98-100% processor usage.
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SELECT p.spid, p.status, p.hostname, p.loginame, p.cpu, r.start_time, r.command,
p.program_name, text
FROM sys.dm_exec_requests AS r,
master.dbo.sysprocesses AS p
CROSS APPLY sys.dm_exec_sql_text(p.sql_handle)
WHERE p.status NOT IN ('sleeping', 'background')
AND r.session_id = p.spid
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-- Name : spDrsSummarizeSendHistory
-- Definition : SqlObjs
-- Scope : CAS_OR_PRIMARY_OR_SECONDARY
-- Object : P
-- Dependencies : <Detect>
-- Description : Summarize DrsSendHistory information into DrsSendHistorySummary
CREATE PROCEDURE spDrsSummarizeSendHistory
AS
BEGIN
SET NOCOUNT ON;
DECLARE @CurrentTime DateTime;
DECLARE @SiteCode nvarchar(3);
DECLARE @LastSummarizationTime DateTime;
DECLARE @NextSummarizationTime DateTime;
DECLARE @Interval INT; -- summarize interval in minutes
DECLARE @ReplicationID INT
DECLARE @iMaxID INT
DECLARE @iCurrentID INT
DECLARE @iBatchSize INT = 50
DECLARE @ReplicationPattern NVARCHAR(255)
DECLARE @TargetSite NVARCHAR(3);
DECLARE @TimeTable TABLE (TargetSite NVARCHAR(3), StartTime DATETIME, EndTime DATETIME, PRIMARY KEY (TargetSite, StartTime, EndTime))
DECLARE @TargetSites TABLE (SiteCode NVARCHAR(3) PRIMARY KEY)
DECLARE @ChildTargetSites TABLE (TargetSite NVARCHAR(3), LastSummarizationTime DATETIME, [Interval] INT, PRIMARY KEY (TargetSite))
DECLARE @ReplicationGroup TABLE (ID INT, ReplicationPattern NVARCHAR(255))
IF OBJECT_ID(N'TempDB..#DrsSendHistorySummary') IS NOT NULL
DROP TABLE #DrsSendHistorySummary
CREATE TABLE #DrsSendHistorySummary (ID BIGINT IDENTITY(1, 1) NOT NULL, SourceSite NVARCHAR(3), TargetSite NVARCHAR(3), ReplicationGroupID INT, SyncDataSize BIGINT, CompressedSize BIGINT, UnCompressedSize BIGINT, MessageCount INT, ChangeCount INT, SummarizationTime DATETIME, PRIMARY KEY (ID))
SET @CurrentTime = GETUTCDATE();
SET @SiteCode = dbo.fnGetSiteCode();
INSERT INTO @ReplicationGroup (ID, ReplicationPattern)
SELECT RD.ID, RD.ReplicationPattern
FROM ReplicationData RD
WHILE EXISTS (SELECT * FROM @ReplicationGroup)
BEGIN
SELECT TOP (1) @ReplicationID = ID, @ReplicationPattern = ReplicationPattern FROM @ReplicationGroup
TRUNCATE TABLE #DrsSendHistorySummary
IF (((@ReplicationPattern = N'global' OR @ReplicationPattern=N'site') AND dbo.fnIsPrimary() = 1)
OR (@ReplicationPattern = N'global_proxy' AND dbo.fnIsSecondary() = 1))
BEGIN -- when current site is child
SET @LastSummarizationTime = ISNULL(( SELECT MAX(SummarizationTime) FROM DrsSendHistorySummary WHERE SourceSite = @SiteCode AND ReplicationGroupID = @ReplicationID),
(SELECT MIN(EndTime) FROM DrsSendHistory WHERE ReplicationGroupID = @ReplicationID) );
SET @Interval = ISNULL((SELECT VALUE FROM RCMSQLCONTROLPROPERTY SCP, RCMSQLCONTROL SC
WHERE SCP.ControlID = SC.ID AND SCP.Name = N'Send History Summarize Interval' AND SC.TypeID = 3 and SC.SiteNumber = dbo.fnGetSiteNumber()), 15); -- default 15 minutes
DELETE @TargetSites
INSERT INTO @TargetSites (SiteCode)
SELECT DISTINCT SiteCode FROM DRS_MessageActivity_Send WHERE ReplicationID = @ReplicationID
IF @LastSummarizationTime IS NOT NULL AND EXISTS (SELECT * FROM @TargetSites)
BEGIN
SET @NextSummarizationTime = DATEADD( minute, DATEDIFF(minute, 0, @LastSummarizationTime)/@Interval *@Interval + @Interval, 0);
-- Summarized according to interval
DELETE @TimeTable
WHILE (@CurrentTime >= @NextSummarizationTime )
BEGIN
INSERT INTO @TimeTable (TargetSite, StartTime, EndTime)
SELECT SiteCode, @LastSummarizationTime, @NextSummarizationTime FROM @TargetSites
SET @LastSummarizationTime = @NextSummarizationTime;
SET @NextSummarizationTime = DATEADD(mi, @Interval, @NextSummarizationTime );
END
INSERT INTO #DrsSendHistorySummary (SourceSite, TargetSite, ReplicationGroupID, SyncDataSize, CompressedSize, UnCompressedSize, MessageCount, ChangeCount, SummarizationTime)
SELECT @SiteCode, T.TargetSite, @ReplicationID, SUM(ISNULL(D.SyncDataSize, 0)), SUM(ISNULL(D.CompressedSize, 0)), SUM(ISNULL(D.UnCompressedSize, 0)), SUM(ISNULL(D.MessageCount, 0)), SUM(ISNULL(ChangeCount, 0)), T.EndTime
FROM DrsSendHistory D RIGHT JOIN @TimeTable T ON D.EndTime >= T.StartTime AND D.EndTime < T.EndTime AND ReplicationGroupID = @ReplicationID AND T.TargetSite = D.TargetSite
GROUP BY T.TargetSite, T.StartTime, T.EndTime;
END
END
ELSE IF ((@ReplicationPattern = N'global' AND dbo.fnIsCAS() = 1)
OR (@ReplicationPattern = N'global_proxy' AND dbo.fnIsPrimary() = 1))
BEGIN -- when current site is parent
DELETE @ChildTargetSites
INSERT INTO @ChildTargetSites(TargetSite, LastSummarizationTime, [Interval])
SELECT DISTINCT(DSH.SiteCode),
ISNULL(( SELECT MAX(SummarizationTime) FROM DrsSendHistorySummary WHERE SourceSite = @SiteCode AND ReplicationGroupID = @ReplicationID AND TargetSite=DSH.SiteCode),
(SELECT MIN(EndTime) FROM DrsSendHistory WHERE ReplicationGroupID = @ReplicationID) ) AS LastSummarizeTime,
ISNULL((SELECT VALUE FROM RCMSQLCONTROLPROPERTY SCP, RCMSQLCONTROL SC WHERE SCP.ControlID = SC.ID AND SCP.Name = N'Send History Summarize Interval' AND SC.TypeID = 3 and SC.SiteNumber = dbo.fnGetSiteNumberBySiteCode(DSH.SiteCode)), 15) AS Interval
FROM DRS_MessageActivity_Send DSH WHERE DSH.ReplicationID = @ReplicationID
GROUP BY DSH.SiteCode;
DELETE @TimeTable
WHILE EXISTS (SELECT * FROM @ChildTargetSites)
BEGIN
SELECT TOP (1) @TargetSite = TargetSite, @LastSummarizationTime = LastSummarizationTime, @Interval = Interval FROM @ChildTargetSites
SET @NextSummarizationTime = DATEADD( minute, DATEDIFF(minute, 0, @LastSummarizationTime)/@Interval *@Interval + @Interval, 0);
-- Summarized according to interval
WHILE (@CurrentTime >= @NextSummarizationTime )
BEGIN
INSERT INTO @TimeTable (TargetSite, StartTime, EndTime)
SELECT @TargetSite, @LastSummarizationTime, @NextSummarizationTime
SET @LastSummarizationTime = @NextSummarizationTime;
SET @NextSummarizationTime = DATEADD(mi, @Interval, @NextSummarizationTime );
END
DELETE @ChildTargetSites WHERE TargetSite = @TargetSite
END;
INSERT INTO #DrsSendHistorySummary (SourceSite, TargetSite, ReplicationGroupID, SyncDataSize, CompressedSize, UnCompressedSize, MessageCount, ChangeCount, SummarizationTime)
SELECT @SiteCode, T.TargetSite, @ReplicationID, SUM(ISNULL(D.SyncDataSize, 0)), SUM(ISNULL(D.CompressedSize, 0)), SUM(ISNULL(D.UnCompressedSize, 0)), SUM(ISNULL(D.MessageCount, 0)), SUM(ISNULL(D.ChangeCount, 0)), @NextSummarizationTime
FROM DrsSendHistory D RIGHT JOIN @TimeTable T ON D.EndTime >= T.StartTime AND D.EndTime < T.EndTime AND ReplicationGroupID = @ReplicationID AND T.TargetSite = D.TargetSite
GROUP BY T.TargetSite, T.StartTime, T.EndTime;
END;
SELECT @iMaxID = MAX(ID), @iCurrentID = 0 FROM #DrsSendHistorySummary
-- BATCH INSERT TO REAL TABLE
WHILE (@iCurrentID < @iMaxID)
BEGIN
INSERT INTO DrsSendHistorySummary (SourceSite, TargetSite, ReplicationGroupID, SyncDataSize, MessageCount, ChangeCount, SummarizationTime)
SELECT SourceSite, TargetSite, ReplicationGroupID, SyncDataSize, MessageCount, ChangeCount, SummarizationTime
FROM #DrsSendHistorySummary WHERE ID > @iCurrentID AND ID <= (@iCurrentID + @iBatchSize)
SET @iCurrentID = @iCurrentID + @iBatchSize
END
TRUNCATE TABLE #DrsSendHistorySummary
DELETE @ReplicationGroup WHERE ID = @ReplicationID
END
END
If anyone has any experience with this issue or anything similar and might be able to point me in the right direction, any responses would be greatly appreciated. Thanks for reading!

Normally, this summary job every few mins which only summarize last few mins sending history. If the job was not running for long time, the first time, this sproc will summarize a lot more data than normal. So it could fail which will make things worse and
worse over time.
If sending summary data is not a big concern here, you can manually insert a dummy row with most recent time as Summarizationtime, so that, when summary job kicks in next time, it will only summary short interval data.
DrsSendHistory is that the table records every sending on every group. This table is one of the key of replication logic. For your environment, on primary site, it could have up to 24(hrs) * 60 (mins) / 2 (sync interval) * 36(secondary sites) records per
day for Secondary_Site_Replication_Configuration group and 24 * 60 / 5 * 22 records for Secondary Site Data.
Umair Khan | http://blogs.technet.com/umairkhan
Hi Umair,
Thank you for the reply. My plan was to go ahead with your suggestions but what I tried first was to get my VM guy to give the SQL server access to more CPU resources. We had already configured it with what would have seemed to be plenty, as per Microsoft's
sizing requirements, but I figured it couldn't hurt to rule out - he gave the SQL server access to a huge portion of the host processing power and since then CPU usage on the server has NOT been an issue.
It would appear that the large amounts of secondary sites we have just simply put a lot of stress on the SQL server with out of the box replication settings. Since the entire VM host is for System Center only, and our other System Center servers are using
very little resources, this solution has ended up being valid.
Thanks again for everyone's help with this.

Recently FireFox often has been causing 100% CPU usage and locks up until it finishes the process (various ones). Clearing cookies/cache didn't help. Any ideas?

Windows 2000 SP4, 1g RAM, Firefox 9.0.1
We keep IE6 and Firefox open simultaneously for 2 different mail accounts. Firefox was always much faster even with 3 or 4 tabs open, but for the past couple of weeks when trying to update a screen the CPU suddenly goes to 100% usage and of course nothing will move until the particular process is finished. Closing one or more tabs does not help. If I close Firefox completely with Task Manager CPU usage goes back down to nil. After restarting Firefox CPU usage may or may not go back up depending upon whether it tries to continue the previous task that was locking it up.
It did not do this with Firefox 3.6 but then again it didn't happen immediately after updating to 9.0.1 either.

100% CPU usage occurred most often toward the end of the working day when busy trying to print on-line postage. We don't have any memory-consuming plugins but according to the knowledge base articles Firefox memory usage can gradually increase during the day even if you do nothing. It seems that may be the problem so we close and restart Firefox more often now as that usually fixes the problem. However, if we get stuck on a particular website update that causes the CPU to to go 100%, we can always start Firefox without previous tabs so the update will stop, or simply use a different browser until we have time to let the computer play games with itself.
So our workaround of restarting Firefox turns out to be the final solution (until we find something better - will post it if we do). Vic

Persistent Active Requests causing high CPU usage and load average

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BlueAeon
Welcome to Apple Discussions!!
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There is good post here in below link for this issue
http://thoughtsofmarcus.blogspot.co.uk/2013/06/leaving-password-blank-in-biztalk-2013.html
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This is one of the issue which has already been raised to Microsoft and hopefully a public build will be available soon in next cumulative update pack .
There are variety of reason for this starting for password mismatch or password not given , SFTP adapter unable to connect and so on .
There is good post here in below link for this issue
http://thoughtsofmarcus.blogspot.co.uk/2013/06/leaving-password-blank-in-biztalk-2013.html
Another greate artcicle is by Nino which states these issues .SFTP adapter is protocol sensitive and some configuration by server side, can cause a lot of crazy situations
http://ninocrudele.me/2014/01/29/checkstat-and-sftp-adapter-issues/
Thanks
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NOT MAKE IT WORSE WITH EVERY DAMN UPDATE!!!!! (Yes I'm using THAT many exclamation marks!!!!)
My System:
Acer/Aspire 5551 (Laptop/board)
Athlon II P320 Dual Core @2.10Ghz
3GB ddr3 @1066Mhz
HD4250 @256MB
Windows 7 HP 64bit
Firefox 19.0 with Ghostery, NoScript and FlashBlock installed, and before you give me the drone script response, I HAVE tested EVERYTHING browser wise, I have uninstalled and even removed the regkeys of EVERYTHING to do with firefox, started fresh and tested, SAME RESULTS HIGH CPU USUAGE, I then added ONE thing at a time, SAME RESULT EACH TIME, HIGH CPU USUAGE, so it REALLY doesn't matter/make any difference, Flashplayer and its damn plug-iins cause the same PROBLEM each time.
I even tried MemoryFox... I know, but i had to try SOMETHING new, and even so, it didn't do a damn thing for the HIGH CPU USAGE!!
I know my laptop is not the latest and greatest with the best chip and gfx card, BUT, it is telling that even those with the best of the best chips and gfx cards are saying the same thing I'm saying here now, FLASHPLAYER IS BUSTED AND CAUSING OUR CPU'S TO GO APE SH*T!!!!!!
I have stripped my Win7 OS down to near bare-bones getting rid of ALL the excess junk that Microsoft couldn't be bothered to get rid of and more, I tweaked my services so that I'm not running 100+ processes and services, I'm now only running ~32 on start-up and using only ~650mb of ram, so I think I've done ok so far getting rid of the crap and filth floating around in my OS. I also got rid of all the bloatware that comes as standrard with all store bought craptops, all the junk they think you need and should have "cuz it's trendy n junk". So really when I'm using Firefox to watch a video in HD and flashplayer is required, it really shouldn't require near maximum of my CPU,
NOT EVEN CIVILIZATION 5 ON GOOD SETTINGS USES THAT F*KING MY CPU
I have stripped my laptop cleaned out the fan, put new thermal paste on (Arctic Silver) and got my temps down quite a bit for a laptop, previous temps ~56c average on idle not long after after boot-up, down to ~47-50c on load playing a game listening to radio in backround,, but as soon as I play ONE video in Youtube with no other applications running, the damn flashplayer goes nuts again and risies back up to the 50's and 60's Celcuis, it just HAS to have all that CPU to it self doesn't it.
If there were ANY alternatives even if they didn't provide as good results when watching videos on Youtube but managed to use a reasonable amount of resources, I'd ditch flashplayer right now, but it appears I like the rest of us are stuck,,, for now.
PLEASE FIX THIS CRAP NOW, MILLIONS OF USERS ARE COMPLAINING ABOUT THIS, WE CANNOT ALL BE WRONG, THERE IS A PROBLEM NOT SIMPLY JUST AN ISSUE< ITS GETTING WORSE WITH EACH UPDATE BY THE LOOKS OF IT, SORT YOUR SH*T OUT GUYS, NO MORE FU**ING AROUND, FIX YOUR SH*T.
PS, sorry for any spelling/grammar mistakes, I just have to rant about this and I'm not that edumacatedness anyway.

Hello
is not working with sfc/scannow, any suggestion please?!! i have same error, winows 7!!
please help me!!!
Thank you

Applet causes high CPU usage

Hallo,
I have a strange problem with my applet. It displays medical images. After loading Image the CPU usage of java jiumps to 100% on single core processors and to 50% on 2 core processors, and stays high, without any interaction of user. I've used Java VisualVM to profile the applet and it says that: javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run() 94.76343 787851 ms (94,8%) 58823 times invoked is
I'm not sure this is the cause of the problem. I don't use any loops while noone is interacting with the applet. Has anyone idea or suggestion what's going wrong?
This CPU load is independent of browser and operating system. I've profiled it on firefox.
with regards
Rafal Ziolkowski

Good job figuring it out.
Rule of thumb to prevent future problems: the paintComponent is used for painting and should do nothing else - setBorder() is a state change and thus does not belong in the paintComponent() method. You can all relate it back to a general programming rule of thumb: a function or method should perform only one task.

How to get max CPU usage

I'm using Win 7 64bit and CS6 64bit.
However, when I do some heavy editing, like anything that takes a few minutes of CPU processing, I tend to look at the task manager only to find that 4 cores are utilizing 50% at max thus taking longer to compute the results.
Is there a way to maximize CPU usage by Photoshop? I would like it to use 100% when performing tasks to speed up process time. Is there a windows plug in?
Thanks,
Gil.

It depends on how each of the portions of Photoshop you're using was implemented. There's little you can do to influence it. About the only thing I can think of is that you can adjust the Tile Size and Cache Levels values in the Edit - Preferences - Performance dialog. On some systems with some kinds of operations smaller tiles can make things work faster and with others large tiles are better. But be forewarned: I've never seen changing those values make a very big difference.
One other thing you can do is adjust the max RAM you allow Photoshop to use. Your OS probably itself doesn't need more than 1 to 2 GB, and if you don't specifically have another application you want to run that uses a lot of RAM you'll want to change the Photoshop RAM usage so as to leave just a few GB for the OS. On a system with a huge amount of RAM that might mean setting it to 90% or more. If Photoshop can keep things in RAM, your CPU will be busier because it won't be waiting on swapping data to/from disk.
Make sure you restart Photoshop before testing any changes.
There are filters that you SHOULD see use 100% of all your cores - example, try a Filter - Blur - Radial Blur on a large image. There are other things that simply don't, because either there isn't a good way to multi-thread the activity (e.g., data compression during save) or the Photoshop implementation is just limited because it's not been updated since the advent of multi-core systems (e.g., some of the old artistic filters).
When I was doing performance testing, I created an action that does a lot of the kinds of things I normally do to images, so that I could run it repeatedly and time the results, looking for differences as a result of choosing the different settings. There are Photoshop benchmarks on the web that do much the same thing, and while it might not be a good match for what you do (none of them were for me), they ARE interesting in that they allow you to compare your performance to other systems out there, to make sure everything's working right.
-Noel

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