[horde] Error: No connection to server

[Simon Brereton]

On 4 November 2011 15:02, Michael M Slusarz <slusarz at horde.org> wrote:
> Quoting Simon Brereton <simon.brereton at buongiorno.com>:
>
>> How does this scale?  I never have more than 30 simultaneous
>> connections.  How do sites cope with 1000+ users?  If you need 256MB
>> memory limit for 3 users (that's all I've had today, do you need
>> multiple gigabytes for 1000+ users?
>
> For an IMP installation at least, the bottleneck should NEVER be the Horde
> server.  It will be the IMAP/mailstore.

I'm not saying it was Horde.  Jan said it would be the memory limit -
and finally it was exactly that.  The only resolution to this issue
was to raise the memory limit (although I'm still suspicious it was
only affecting one user, and even only that one user when I restricted
access to just my account and the users account.

>> Why is only one user affected when the memory limit is reached (and
>> that persistently across apache restarts?
>
> Have you cleared their browser cache?  If using old javascript, that could
> be causing issues.

No access to the cache on the users browser, but since I used firstly
my brower and then a completely new one (Chrome), I dont' think it's a
cache issue.

>> FYI - since yesterday, users (including me) who have horde as their
>> default application after login have not been able to see the portal
>> page.  Changing the URL to imp/kronolith/etc. works - initially I
>> thought this was to do with the weatherdotcom expiry, but a) not all
>> users use it and b) since raising the limit this problem too has been
>> resolved (although I notice the horde menu on the right is taking
>> longer to load than before).  So if nothing else, I've had to double
>> the memory requirement just to be able to use 4.0.11
>
> I've actually lowered my memory usage since Horde 3, so something is screwy
> with your setup.

I'm prepared to believe you, but I don't have the skills to
tweak/customise an install, so everything is fairly standard debian
installed packages.

> The sidebar in traditional view is no longer in an IFRAME, so it loads on
> every page.  THat's why it takes longer.  Please see archived list
> discussions for further info.

I'm aware of the angst caused by the not being in an iframe, but it is
definitely taking 2-3 times longer to load since moving to H4.0.11
yesterday.  Even after raising the memory limit.

Simon