[RCD] another performance fix

Dennis P. Nikolaenko dennis at nikolaenko.ru
Sat Dec 6 00:19:44 CET 2008


Ziba Scott wrote:
> Ziba Scott wrote:
>   
>> Dennis P. Nikolaenko wrote:
>>   
>>     
>>> Ziba Scott wrote:
>>>     
>>>       
>>>> till wrote:
>>>>  
>>>>       
>>>>         
>>>>> On Sat, Nov 29, 2008 at 1:03 PM, Thomas Bruederli
>>>>> <roundcube at gmail.com> wrote:
>>>>>      
>>>>>         
>>>>>           
>>>>>> till wrote:
>>>>>>          
>>>>>>           
>>>>>>             
>>>>>>> I agree that we should keep this redirect.
>>>>>>>
>>>>>>> @alec If you want to avoid connections at all cost, did you try
>>>>>>> running an IMAP proxy to see if you can gain some there?
>>>>>>>               
>>>>>>>             
>>>>>>>               
>>>>> Just found the link:
>>>>> http://www.imapproxy.org/
>>>>>
>>>>>       
>>>>>         
>>>>>           
>>>> We use imapproxy in production for both HORDE/IMP and RoundCube.  We
>>>> have a proxy processes on each of our webmail servers which have
>>>> permission to connect to IMAP as any user.  Once the webmail client
>>>> connects to the proxy, the proxy will hold a connection open to the imap
>>>> server.   
>>>>       
>>>>         
>>> Have you made any performance measurements? How many users do you
>>> have? How many users are simultaneously online? How many connections
>>> are between imapproxy and IMAP server at the same time on average and
>>> at maximum?
>>> -- 
>>> Dennis
>>>
>>>     
>>>       
>> We haven't done any measurements on roundcube without imapproxy, and I
>> don't have the numbers for concurrent proxy<->imap connections (I'm
>> looking into that).
>>     
>
> I don't have stats over time, but right now I'd roughly estimate 4,700
> proxyd processes across 15 web servers.
>   
Thanks for the stats.
Do you have only one IMAP server or several?
--
Dennis
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