[CalendarServer-users] Limitations on number events?

[Sean McAvoy]

On Feb 12, 2009, at 12:14, Sean McAvoy wrote:

>
> On Feb 12, 2009, at 00:14, Sean McAvoy wrote:
>
>>
>> On Feb 11, 2009, at 22:07, Cyrus Daboo wrote:
>>
>>> Hi Sean,
>>>
>>> --On February 11, 2009 6:22:37 PM +0100 Sean McAvoy <smcavoy at ripe.net 
>>> > wrote:
>>>
>>>>> What does the server's access.log and error.log look like for this
>>>>> problem? Also, what are the timestamps on iCal's log entries? In
>>>>> particular, it could be that iCal is timing out waiting on the
>>>>> server (i.e. a performance issue rather than a limit).
>>>> I would hope it not a performance issue, its single quad core  
>>>> with 4gb of
>>>> RAM :) acting as a OD Server and running the calendar server.
>>>> I've included a lot of the error log as nothing stands out for me,
>>>> perhaps for you?
>>>>
>>>> access.log:
>>>> 193.0.20.121 - smcavoy [11/Feb/2009:18:05:39 +0200] "PROPFIND
>>>> /calendars/__uids__/819B6FB2-066B-446C-854F-DC14DDD937D8/calendar/
>>>> HTTP/1.1" 207 496208 "-" "D AVKit/3.0.6 (653); CalendarStore/ 
>>>> 3.0.6 (847);
>>>> iCal/3.0.6 (1273); Mac OS X/10.5.6 (9G55)" [80504.2 ms]
>>>
>>> What do other PROPFINDs look like in terms of the [XXX ms] value  
>>> reported in the access.log? What does cpu and memory use show on  
>>> that machine?
>> Both memory and load are quite high, around 40-50% average usage  
>> for CPU and 80% phys memory used.
>>
>> Here is one of the problem calendars:
>> access.log
>> [12/Feb/2009:00:02:39 +0200] "PROPFIND /calendars/__uids__/ 
>> 819B6FB2-066B-446C-854F-DC14DDD937D8/ HTTP/1.1" 207 5184 "-"  
>> "DAVKit/3.0.6 (653); CalendarStore/3.0.6 (847); iCal/3.0.6 (1273);  
>> Mac OS X/10.5.6 (9G55)" [4048.2 ms]
>>
>> error.log
>> 2009-02-12 00:02:38+0100 [-] [caldav-8009]  [AMP,client] PROPFIND / 
>> calendars/__uids__/819B6FB2-066B-446C-854F-DC14DDD937D8/ HTTP/1.1
>> 2009-02-12 00:02:40+0100 [-] [caldav-8009]  [AMP,client] PROPFIND / 
>> calendars/__uids__/819B6FB2-066B-446C-854F-DC14DDD937D8/calendar/  
>> HTTP/1.1
>>
>> iCal client:
>> 2/12/09 12:04 iCal[4703] CalCalDAVCalendarSource: Error  
>> Domain=AYErrorDomain Code=2 UserInfo=0x167c7a20 "Async Operation  
>> timed out"
>> 2/12/09 12:04 iCal[4703] The server at /calendars/__uids__/ 
>> 819B6FB2-066B-446C-854F-DC14DDD937D8/calendar/ responded with the  
>> error:
>> "Async Operation timed out"
>> 2/12/09 12:04 iCal[4703] The server at /calendars/__uids__/ 
>> 819B6FB2-066B-446C-854F-DC14DDD937D8/calendar/ responded with the  
>> error:
>> "Async Operation timed out"
>>
>> many PROPFINDs are less then 100ms all problem ones are 3000ms+
>>
>> I will look into possible network issues.
> I connected a system to the same VLAN as the calendar server,  
> calendars with about 1500 events work some of the time but take  
> sometime. 3000+ event calendars still do not work at all.
>
> I will move a few of the large calendars to a almost unused  
> similarly spec'd system to see if a single user downloading the  
> calendar works.
> Has there been many tests of large calendars + iCal clients?
I have tried this and found the same basic problem, other users cannot  
access calendars with lots of events (tested 900-9500 event calendars).
Do you have any other suggestions on how to narrow down the problem?
Thanks!
>
>>
>>
>> Thanks!
>>>
>>>
>>> Note that according to the access log the server did send back a  
>>> response for that PROPFIND, so I find it a little odd that the  
>>> client saw nothing. Are there any intermediary devices (firewalls,  
>>> routers etc) between the client and server?
>>>
>>> -- 
>>> Cyrus Daboo
>>>
>>
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