Performance (was Re: [imp] IMP H3 (4.0) (final))

[Steve Lidie]

On Jan 3, 2005, at 9:43 PM, Michael M Slusarz wrote:

> Quoting Lidie Steve <sol0 at Lehigh.EDU>:
>
>>
>> On Jan 3, 2005, at 4:04 PM, Chuck Hagenbuch wrote:
>>
>>> Quoting Steve Lidie <sol0 at Lehigh.EDU>:
>>>
>>>> IMP 4 seems to be (much) slower than IMP 3.  On a fast Win32 box 
>>>> with 1
>>>> GB memory running XP Pro, login to an account with 2,000 mails on 
>>>> IMP3
>>>> requires a few seconds and 45 MB of memory on the PC.  The same 
>>>> account
>>>> on IMP4 requires 2-3 *minutes* to login and uses 117 MB of memory.  
>>>> The
>>>> IMP 4 machine is bigger and faster than the IMP 3 machine and, not
>>>> being production, has no load at all.  Assuming performance 
>>>> comparisons
>>>> have been made, is what I am seeing expected behavior?
>>>
>>> Expected? No. And that sounds awfully extreme. But IMP 4 hasn't been
>>> performanced tuned the way that IMP 3 (being available stable for 
>>> around 3
>>> years) had been.
>>
>> OK, I'll begin poking around.  In the meantime, do you have anything
>> specific I can do to help?
>
> Have you followed horde/docs/PERFORMANCE?

Not all of the advice, but I do have imapproxy and PHPa, lots of 
memory, .... As it happens the slowdown for only for particular 
accounts, e.g. large home directories and many files, thus Apache and 
the IMAP daemon were having quite a lengthy conversation during login 
searching for mail.  Selecting:

Mail / Options / Server and Folder Information / Use IMAP folder 
subscriptions?

was the answer. Thanks.