Painfully slow when logged in

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I have been having trouble editing my C5 site when logged in. Some things happen reasonably quickly (3-10 seconds), like navigating around the dashboard. Other things halt without progress for a few minutes or keep loading forever–literally.

For example, saving a simple content block might take several minutes. Most of the time the block eventually saves OK, but sometimes I get a “Could not save block” error after several minutes. Entering/exiting editing mode can take a while too. Also, deleting a page just spins indefinitely without success. I’ve waited 15 minutes just to be sure, but no success as of yet. I tried deleting other pages, cleared the cache, and experimented with cache settings. Nothing has helped. My site is very small (20 pages total), so I should not be experiencing such poor performance.

Oddly, load times are not always the same. I can be browsing the website, browsing several pages that load in only a few seconds, and then the next request may chug for a few minutes. I know it’s not a problem with internet connection: I’ve tried on several high-speed networks using different browsers. All have the same sluggish behavior.

At this point, C5 is almost unusable for me. The evidence points toward a server problem, not a client problem. I’m on university-provided hosting. Can someone help diagnose what the problem may be and offer suggestions for resolving it? If it is indeed a hosting issue, do you have suggestions for hosting services that are well suited for C5?

Thank you,
Zach

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digitwall replied on at Permalink Reply
digitwall
Have you tried removing the old page versions around your site?
I have found that this can slow Concrete5 way down if you don't keep up that maintenance.
webmaster55 replied on at Permalink Reply
I just removed old page versions -- there were only 11. Thanks for the tip. Still, no improvements in performance. Any other ideas?
digitwall replied on at Permalink Reply
digitwall
What version of PHP is installed on the website?
webmaster55 replied on at Permalink Reply
PHP Version 5.3.26.
Johnny4x replied on at Permalink Reply
wow! I am having the SAME problem with a new site just installed on Heart Internet (UK). Site runs fine (C5 5.6.3.2) when not logged in, but when in edit mode, sometimes the edit bar turns up within a second or so, but other times can take as long as 45s - I even had Heart up the timeout! This is doing my head in - have not had this with any other C5 installation either on Heart or any other... Sorry, no answer, but can confirm there is an issue... Heart themselves are shrugging their shoulders. Any help would be fantastic.
Johnny4x replied on at Permalink Reply
just to add, the other C5 sites I have are running C5 v5.6.3.1 - wonder if a 'downgrade' would help? if that is possible!
webmaster55 replied on at Permalink Reply
I don't know. I am running C5 v5.6.2.1 and was wondering if an upgrade would help. But now I'm thinking twice!
JohntheFish replied on at Permalink Reply
JohntheFish
Johnny4x replied on at Permalink Reply
oooh.. interesting, the site I have trouble with does not use AutoNav at all. All links are in text. Maybe C5 needs Autonav to function ? I can try this tomorrow.. thanks!
Johnny4x replied on at Permalink Reply
ahh well, no change when adding AutoNav. Site using php 5.3 apparently... I'm back to square one.
AndyJ replied on at Permalink Reply
hi, if you're using Heart try the site using a newer PHP version - the option is there in your extendcp control panel. You could try 5.4 or event 5.5 to see if ti runs any better.
Johnny4x replied on at Permalink Reply
thanks! but.. just tried 5.4 and then 5.5 - no difference. Just now I'm installing C5 v 5.7.1 in a sub-folder, just to see if the latest works better. I can't go back and re-do the slow-edit site at this stage, but if this latest version performs better - there may be a clue there...
Johnny4x replied on at Permalink Reply
well... PHP 5.5 and installed C5 v 5.7.1 in sub-folder of main site... I say the new version of C5 seems less likely to hang when waiting for the edit bar to return after submitting changes.. but its certainly not zippy as some of my other C5 sites.. I'm thinking it must be down to Heart... somehow..

If I ever get to the bottom of this, will post again. and apologies for apparently hi-jacking the thread! :(
plindelauf replied on at Permalink Reply
plindelauf
Johnny,

I'm running into similar problems: our site is all of a sudden very slow when we login. Did you ever solve this and if so, how?

Thanks,

Pascal
webmaster55 replied on at Permalink Reply
Unfortunately, no, I did not resolve the issues. I decided to move entirely to WordPress.
JohntheFish replied on at Permalink Reply
JohntheFish
> the site I have trouble with does not use AutoNav at all
In that case I doubt if autonav is anything to do with your speed problem and adding it will not resolve your problem.