FW: Performance tuning + RAM requirements

David Wilson davew@sai.co.za
Sun, 6 May 2001 16:29:08 +0200
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Hi all, howzit going ?

I'm running IMP at the end of a 128K line on a P3 750 with 128Megs of RAM.
I have on average 200 simultaneous connections accessing their webmail, at
times I have noticed that the responsiveness of IMP slows down badly.
I have tried loading a caching DNS with Bind which definitely seems to have
improved some items speed, however I still have a major problem with things
just taking to long for my users.
Is there any options that I can use for Apache, MySQL, Sendmail or IMAP that
will increase the responsivness of IMP ? All I have is basically the default
install config for Apache etc. So maybe there is some "tweaking" I can do of
the config files ?
It's also noticed that CPU usage sits pretty high most of the time, 30-60%
Idle. One thing that concerned me is that the system was using 50Megs of
it's swap drive, so I think that adding more RAM should help ?

Anyways any guidance would be greatly appreciated.
Thanks. ;-)



Regards

David Wilson

Technical Support Centre

The S.A Internet

0860 100 869

http://www.sai.co.za



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>From adrieder@sbox.tugraz.at Date: Sun,  6 May 2001 16:44:27 +0200
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From: Didi Rieder <adrieder@sbox.tugraz.at>
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Subject: Re: [imp] FW: Performance tuning + RAM requirements

Quoting David Wilson <davew@sai.co.za>:

> Hi all, howzit going ?
> 
> I'm running IMP at the end of a 128K line on a P3 750 with 128Megs of RAM.
> I have on average 200 simultaneous connections accessing their webmail, at
> times I have noticed that the responsiveness of IMP slows down badly.
> I have tried loading a caching DNS with Bind which definitely seems to have
> improved some items speed, however I still have a major problem with things
> just taking to long for my users.
> Is there any options that I can use for Apache, MySQL, Sendmail or IMAP
> that
> will increase the responsivness of IMP ? All I have is basically the
> default
> install config for Apache etc. So maybe there is some "tweaking" I can do
> of
> the config files ?
> It's also noticed that CPU usage sits pretty high most of the time, 30-60%
> Idle. One thing that concerned me is that the system was using 50Megs of
> it's swap drive, so I think that adding more RAM should help ?
> 
> Anyways any guidance would be greatly appreciated.
> Thanks. ;-)
> 

If you are using IMP-2.2.x, then you can try the APC, it increases the speed of
IMP at least 2-3 fold.

http://apc.communityconnect.com

(Unfortunately there are problems with APC and IMP-2.3.7-cvs)

Didi

-- 
------------------------
Didi Rieder
adrieder@sbox.tugraz.at
------------------------


>From chuck@horde.org Date: Sun,  6 May 2001 10:49:21 -0400
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Date: Sun,  6 May 2001 10:49:21 -0400
From: Chuck Hagenbuch <chuck@horde.org>
To: imp@lists.horde.org
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Subject: Re: [imp] FW: Performance tuning + RAM requirements

Quoting Didi Rieder <adrieder@sbox.tugraz.at>:

> http://apc.communityconnect.com
> 
> (Unfortunately there are problems with APC and IMP-2.3.7-cvs)

Which no one has described to me well enough that I think they're really 
problems with IMP... sounds like APC just doesn't handle some php4 features 
correctly, for whatever reason.

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"When you can't even start, it's time to stop" - Jason


>From chuck@horde.org Date: Sun,  6 May 2001 10:59:21 -0400
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From: Chuck Hagenbuch <chuck@horde.org>
To: imp@lists.horde.org
Cc: turba@lists.horde.org
References: <F6947FR7mOuf0fLCBTQ00000b8d@hotmail.com> <20010505135016.A15811@alcor.concordia.ca> <00df01c0d5aa$1a68b440$0100a8c0@ilya> <989100448.3af479a0f1b42@www.the-triumvirate.net> <011b01c0d5b7$cb6773a0$0100a8c0@ilya> <989104290.3af488a283d73@www.the-triumvirate.net> <012701c0d5bb$e425d860$0100a8c0@ilya>
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Subject: Re: [imp] message composition and addresses

Quoting Ilya <maillist@krel.org>:

> i noticed an oddity though, if i create entry with "()" in name Turba
> doesnt see it, ie Ilya (home), it is in db, but searches dont bring it up.

Confirmed; I have no idea why, but I'll look into it when I have a chance. 
Please followup on the turba list.

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"When you can't even start, it's time to stop" - Jason


>From adrieder@sbox.tugraz.at Date: Sun,  6 May 2001 17:06:37 +0200
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From: Didi Rieder <adrieder@sbox.tugraz.at>
To: imp@lists.horde.org
References: <NEBBJFIIGKGLPEBIJACLGEFEDLAA.davew@sai.co.za> <989160267.3af5634bed3f9@sbox.tugraz.at> <989160561.3af56471ed8b4@marina.horde.org>
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Subject: Re: [imp] FW: Performance tuning + RAM requirements

Quoting Chuck Hagenbuch <chuck@horde.org>:

> > http://apc.communityconnect.com
> > 
> > (Unfortunately there are problems with APC and IMP-2.3.7-cvs)
> 
> Which no one has described to me well enough that I think they're really 
> problems with IMP... sounds like APC just doesn't handle some php4 features
> 
> correctly, for whatever reason.

I also think, that the problem lies at the APC site.
What i found is, that the apc crashes when including "Browser.php". I could
solve it by changing

$this->setFeature('javascript', x.x);
 to
$this->setFeature('javascript', 'x.x');

But there are also other files where apc gives up. So I had to exclude
"/horde/imp/templates/compose/*" from caching.

Didi

-- 
------------------------
Didi Rieder
adrieder@sbox.tugraz.at
------------------------


>From chuck@horde.org Date: Sun,  6 May 2001 11:12:00 -0400
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Subject: Re: [imp] FW: Performance tuning + RAM requirements

Quoting Didi Rieder <adrieder@sbox.tugraz.at>:

> I also think, that the problem lies at the APC site.
> What i found is, that the apc crashes when including "Browser.php". I could
> solve it by changing
> 
> $this->setFeature('javascript', x.x);
>  to
> $this->setFeature('javascript', 'x.x');

So it doesn't handle floats? Strange...

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"When you can't even start, it's time to stop" - Jason
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