Forum hanging when posting

[xantia_v6]

As we have all noticed, the forum software has for some time had a tendency to hang, sometimes causing a Cloudflare timeout, leading to duplicate posts. I investigated this a month or so ago, but did not reach any definitive conclusion about the cause, although my main suspect is the we server package.

Early today I rolled back that package to an earlier version to test for a few days. Please report any cases where the forum hangs for more than 15 seconds, or triggers a Cloudflare timeout. Don't bother reporting shorter delays, as they could be due to other causes.

[mickthemaverick]

All good here this morning!

[xantia_v6]

i have also re-enabled the web-server cache (which has been switched off for a couple of years), and it has reduced the server load by about 90% (which says quite a lot about the coordination between the 100s of "guests".

[xantia_v6]

The forum performance seems to be somewhat improved.

You may be interested to see the server CPU loading graph for the last week, the flat portion at the end corresponds to the enabling of the page cache. A page cache would not have that dramatic effect with real uer traffic, but the bots tend to repeatedly ask for the same pages.