[horde] Active Sync makes a rather slow impression

Thu Sep 10 10:43:38 UTC 2015

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Am 10.09.2015 um 10:06 schrieb Jens Hellermann:
> Am 08.09.2015 um 14:05 schrieb Michael J Rubinsky:
>>
>> Quoting Jens Hellermann <hellermann at we-do.com>:
>>
>>> Am 07.09.2015 um 18:54 schrieb Michael J Rubinsky:
>>>>
>>>> Quoting Jens Hellermann <hellermann at we-do.com>:
>>>>
>>>>> Dear Horde List Members,
>>>>>
>>>>> I have to sync several really large (>16GB +) Outlook accounts via 
>>>>> Activesync into Outlook, and I would like to know if it is 
>>>>> possible to give some Horde Processes a higher priority or myabe 
>>>>> asign more workers for certain processes.
>>>>> Because a  16GB Mail folder with over 50 Subfolders and sub, sub, 
>>>>> sub Folders is taking really long (more than 8 hours definitly). 
>>>>> Still the Server seems to be running idle most of the time, hardly 
>>>>> any network taffic, minimal CPU Usage same for memory.
>>>>>
>>>>> Does anyone have an idea, how to fix this issue? Kind regards, Jens.
>>>>
>>>>
>>>> The slowdown is most likely NOT due to any server resource usage - 
>>>> as you can see by your server stats. This is probably due to OL's 
>>>> speed in parsing and/or requesting each set of mail messages. IIRC, 
>>>> I've seen OL request between 5 and 50 messages per request and new 
>>>> requests are not made immediately after the previous one finishes 
>>>> (probably to improve responsiveness of OL during the long initial 
>>>> sync while still allowing NEW email messages to arrive before the 
>>>> intial sync is finished). As far as I know there is no way to 
>>>> change this behavior. You can verify this by following the sync log 
>>>> of an attached OL client.
>>>>
>>> Hello Michael, first things first thanks a lot for your quick 
>>> response. I understand that Outlook needs some time to synchronize, 
>>> but my impression is that the system became slower with every new 
>>> mail account I synchronize. What makes it difficult for me to 
>>> analyze the situation is that I have problems setting up Activesync 
>>> for logging per device (or single file at the moment). This weekend 
>>> I upgraded everything to the newest version of Horde 5.2.10 . Maybe 
>>> logging is a little buggy (or me!). The entries in the gui result in 
>>> these entries in the conf.php:
>>>
>>> $conf['activesync']['logging']['path'] = '/var/log/activesync';
>>> $conf['activesync']['logging']['level'] = '2';
>>> $conf['activesync']['logging']['type'] = 'perdevice';
>>>
>>> The folder has been given the right permissions but even after a 
>>> reboot no files ever show up in it. If I give folder path 
>>> '/var/log/activesync/' I kill horde more or less completely.
>>>
>>> Can you confim this behaviour,
>>
>> No. Logging works fine for me, with those exact same settings 
>> (assuming the /var/log/activesync directory exists).
>
> Hi Michael, OK it just takes some time until it activates (even after 
> restarting lighttpd). So now I can logg per device and that client 
> which made such a slow impression stops syncing after ~8GB and the 
> last message in the log reads:
>
> 2015-09-10T09:53:10+02:00 INFO: [2036] Maximum memory usage for 
> ActiveSync request: 64225280 bytes.
>
> This Email-Account has more than 50 folders and subfolders. So should 
> I raise the maximum Memory for ActiveSync requests? If yes, where 
> could I do so? Kind regards, Jens.

Ok, a little update: the sync often stops with these messages in the 
ActiveSync log:

2015-09-10T12:30:26+02:00 DEBUG: [2031] O     Fffd7569a
2015-09-10T12:30:26+02:00 DEBUG: [2031] O    </Ping:Folder>
2015-09-10T12:30:26+02:00 DEBUG: [2031] O    <Ping:Folder>
2015-09-10T12:30:26+02:00 DEBUG: [2031] O     Fdd65d674
2015-09-10T12:30:26+02:00 DEBUG: [2031] O    </Ping:Folder>
2015-09-10T12:30:26+02:00 DEBUG: [2031] O   </Ping:Folders>
2015-09-10T12:30:26+02:00 DEBUG: [2031] O  </Ping:Ping>
2015-09-10T12:30:26+02:00 INFO: [2031] Maximum memory usage for 
ActiveSync request: 60293120 bytes.

It stops for several minutes then, even though I set the send and 
receive interval on 3 minutes, it can take longer.

So this explains, why the sync is so slow, server and client are just in 
an idle state, until I press send and receive again.

Sometimes it also stops with a message like this:

2015-09-10T12:03:18+02:00 INFO: [2035] Updating state during change
2015-09-10T12:03:18+02:00 INFO: [2035] Peak memory usage after message: 
60555264
2015-09-10T12:03:18+02:00 INFO: [2035] 
Horde_Core_ActiveSync_Driver::getMessage(INBOX,

19464)
2015-09-10T12:03:18+02:00 INFO: [2035] Sending MIME Message.
2015-09-10T12:03:18+02:00 INFO: [2035] Checking MIMETRUNCATION: , 
ServerData: 10153
2015-09-10T12:03:18+02:00 ERR: Attribute "DTEND" Not Found
2015-09-10T12:03:18+02:00 INFO: [2035] Fetching verb for 
<001a11342f28e1e3b5050c9b57b6 at google.com>.

Message from syslogd at Horde at Sep 10 12:03:18 ...
  HORDE: Call to a member function getvEvent() on a non-object [pid 2035 
on line 1412 of "/usr/share/php/Horde/Core/ActiveSync/Driver.php"]

I know that it's true that some schedules don't have dtstart and dtend 
entries, and it seems here they come from a google calendar. So some of 
my users seem to use google calendar to send schedules to our internal 
calendar. Similar users use their apple calendars parallely. I'll find 
ways to surpress this futurely (junk filter).

But do you think there is a way to keep the ActiveSync traffic alive, 
when these circumstances appear?

Kind regards, Jens.
>>
>> or is it me going wrong somewhere?
>>> Best regards, Jens.
>>> -- 
>>> Horde mailing list
>>> Frequently Asked Questions: http://horde.org/faq/
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>>
>>
>>
>