[horde] Problem of slow with server-side sorting

[lst_hoe02 at kwsoft.de]

Zitat von Steve Devine <sd at msu.edu>:

> Quoting "Jose Luis Marin Perez" <jolumape_al at hotmail.com>:
>
>>
>>
>> Thanks for your answers.
>>
>> These hardware features:
>>
>> ML370 G4
>> Xeon 3.6 GHz CPU
>> 1 GB RAM
>> Hard Drive 300GB - Raid 1 - EXT3
>>
>> When accessing one of these accounts capture a sample of the TOP command
>>
>> top - 09:37:51 up 4 days, 15:26,  2 users,  load average: 5.07, 4.85, 4.79
>> Tasks: 146 total,   1 running, 145 sleeping,   0 stopped,   0 zombie
>> Cpu(s): 46.5% us, 19.8% sy,  0.0% ni, 19.8% id, 13.9% wa,  0.0% hi,  0.0% si
>> Mem:   1034512k total,  1008464k used,    26048k free,    55592k buffers
>> Swap:  2048276k total,   143232k used,  1905044k free,   516016k cached
>>
>> On our server there are about 5000 mail accounts with more than  
>> 1000 messages per account.
>>
>> As can enable an option _imp_hook_msglist_format and that benefits  
>> could give me to solve my problem?
>>
>> Regarding the questions of Steve Devine:
>>
>> There are 3 webmails configured for accessing the IMAP server and  
>> have approximately 200 to 300 concurrent users
>>
>> MAXPERIP = 256
>> MAXDAEMONS = 40
>>
>> Thanks
>>
>> Jolumape
>
> Looks like your RAM is used up and your running into swap. Get more memory.
> Is IMAP the only thing running on this machine?

Note that he had 50% (~500MB) of the RAM used as file-cache which can  
mostly be freed on demand. So i don't agree that RAM is the primary  
problem here.

Regards

Andreas