Re: Shared calendar

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> -----Original Message-----
> From: squirrelmail-users-bounces@xxxxxxxxxxxxxxxxxxxxx 
> [mailto:squirrelmail-users-bounces@xxxxxxxxxxxxxxxxxxxxx] On 
> Behalf Of Paul Lesniewski
> Sent: Tuesday, February 13, 2007 9:44 PM
> Cc: squirrelmail-users@xxxxxxxxxxxxxxxxxxxxx
> Subject: Re:  Shared calendar
> 
> > > >
> > > > > -----Original Message-----
> > > > > From: pdontthink@xxxxxxxxx [mailto:pdontthink@xxxxxxxxx]
> > > On Behalf
> > > > > Of Paul Lesniewski
> > > > > Sent: Tuesday, February 13, 2007 8:03 AM
> > > > > To: Jevos, Peter
> > > > > Cc: squirrelmail-users@xxxxxxxxxxxxxxxxxxxxx
> > > > > Subject: Re:  Shared calendar
> > > > >
> > > > > On 2/12/07, Jevos, Peter <Peter.Jevos@xxxxxxxxxxxxxxx> wrote:
> > > > > > Hi
> > > > > >
> > > > > > I'd like to ask you one think about shared Calendar
> > > > > developed by Paul
> > > > > > Lesneiwski.
> > > > > > This plugin is very usefull.
> > > > > > I have about 5-7 caledars each with 5-8000 users ( email
> > > > > addresses )
> > > > > > The problem is that SM got slow when I added those users
> > > > > into calendars.
> > > > > > For example main page or calendar list takes about 10
> > > > > seconds ( before
> > > > > > it was 1-2 seconds ) I tried to use file backend plugin and 
> > > > > > sql backend plugin but with the same result Is 
> there some tune
> > > > > options how
> > > > > > to accelerate the loading of SM more ?
> > > > >
> > > > > Can you clarify?  The 5000 to 8000 users are only the
> > > users who have
> > > > > shared access to those calendars?  What kinds and how many 
> > > > > events are on the calendars?  I don't currently have 
> development
> > > time for
> > > > > this plugin, so I'm not sure I can help you at this 
> time, so you 
> > > > > could dig into it yourself and let us know what you find.
> > > > > Otherwise, if you can give me more information about the
> > > issues, I
> > > > > will look at the issues when this plugin comes to the 
> top of my 
> > > > > list.
> > > > >
> > > > > Cheers,
> > > > >
> > > > > Paul
> > > >
> > > > Thanks for your answer Paul.
> > > > Yes, 5-8000 users have read access to one calendar. I've
> > > got about 6
> > > > calendars (with those thousends users ) and it will 
> grow probably.
> > > > I would say the problem starts not only with adding of events ( 
> > > > the events exists about 20 per month ).
> > > > First of all it loads very slowly small calendar and it
> > > means it loads
> > > > also main page. And when I load the Calendar page and 
> making some 
> > > > actions ( e.g. adding or deleting the events ) it takes 
> about 8-10 
> > > > seconds.
> > > > I tried to delete all calendars and the pages were loaded
> > > immediately.
> > > > I found out when I delete all *.ics form the
> > > private_calendars folder
> > > > ( about 1500 ics files ) , the delay was shorter at half.
> > > > So it means the number of users and private ics files
> > > somehow affects
> > > > the pages loading. Events don't affect the delay I really
> > > appreciate
> > > > your participation on this and other projects
> > >
> > > OK, I understand.  Thank you.  I am very sorry I can't 
> get to this 
> > > right away.  Let me know if you are able to debug it yourself.
> >
> >  Hi Paul
> >
> > Is there a way how can I debug it myself ? I'd like to do it but I 
> > have no idea how
> 
> The hard way?  ;-)  I don't have any specific tips, at least 
> not unless I start looking at the code, so all I can say is 
> that I'd put in some echo statements in the plugin code that 
> is being called for the page load, and see which echo 
> statements show before the delay and which ones show after 
> the delay.  Then you can narrow down the offending code.  
> Either that, or start reading and understanding how calendars 
> are loaded into memory; seems like there is a problem in that 
> all users are inspected even when it just needs to look for one user.
> 

Dear Paul 

I tried to examine shared_clanedar plugin but nothing found. But new
problem appeared, problem with memory. I tried to load Options-Calendars
page and I've got error:

Allowed memory size of 33554432 bytes exhausted (tried to allocate 128
bytes)

I need to increased in php.ini memory_limit = 64M to work with calendar
and server.
Seems that you were right with loading calendars into memory
Since the calendars and users are increasing I think in the next weeks I
will have to disable this plugin cause server will become unavailable
Don't you know some quick workaround ?

Thanks
BR

Peter

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