[horde] General question to "horde-autoloader-cache-prune"

[Arjen de Korte]

Citeren Patrick De Zordo <patrick at spamreducer.eu>:

> Am 20.05.2014 11:56, schrieb Arjen de Korte:
>> Citeren Patrick De Zordo <patrick at spamreducer.eu>:
>>
>>> Am 20.05.2014 11:21, schrieb Arjen de Korte:
>>>> Citeren Patrick De Zordo <patrick at spamreducer.eu>:
>>>>
>>>>> Am 20.05.2014 10:17, schrieb Arjen de Korte:
>>>>>> Citeren Jan Schneider <jan at horde.org>:
>>>>>>
>>>>>>> Zitat von Patrick De Zordo <patrick at spamreducer.eu>:
>>>>>>>
>>>>>>>> Am 20.05.2014 09:19, schrieb Michael M Slusarz:
>>>>>>>>> Absent any strange issues... never.
>>>>>>>>
>>>>>>>> OK thanks, just seeing on every "horde-alarms" cronjob  
>>>>>>>> "Cannot write Autoloader cache to backend." in logs..
>>>>>>>> Is this normal? Just ignore this message?
>>>>>>>
>>>>>>> Run the script with the web server user.
>>>>>>
>>>>>> If you're using APC, it is probably the same problem as mentioned in
>>>>>>
>>>>>> http://osdir.com/ml/horde/2014-05/msg00005.html
>>>>>>
>>>>>
>>>>> Not using it, just "filesystem" caching..
>>>>
>>>> If you have APC installed, you really should set  
>>>> 'apc.enable_cli=1' to prevent the above messages, regardless of  
>>>> the $conf[cache][driver] setting.
>>>
>>> Non PHP guru..
>>> How to check if "apc" is installed? I dont have a "apc.ini" on filesystem..
>>
>> Run
>>
>>    phpinfo();
>>
>> in a the PHP shell (available under the Horde Administration), but...
>>
>>> Now I've set $conf[cache][driver] = "Use the APC cache"..but why  
>>> no errors if I've not installed APC? Can I check if cache is  
>>> really working?
>>
>> ...the above means APC is installed (and working), otherwise Horde  
>> wouldn't run anymore.
>
> Found it! Its called "apcu" (running Ubuntu 14.04), and with  
> "apc.php" in a public folder now I can see the cache is working!
> And the cron-messages has just disappeared.
>
> Should there som cronjob to rebuild the cache every day/week?

Not needed, APC will do this for you automatically. You can tune this  
to some extent, see the variables that are shown by phpinfo(), but I  
have never needed this. You'll want to keep an eye on 'apc.php' for  
the next few days to see if you have configured enough space. Some  
parts of Horde will slow down significantly if you run out of cache  
space. If you have a large userbase, you may need to increase this  
from the default value of 64 MB (if memory serves).

> And if yes, what utility can do this?
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