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Happy to report that Wuhua, developer of the Mediawiki plugin, fixed it. Turns out our wiki uses numerous and complicated templates, which before used to be information included in tags attached to cached files. The problem was that between our traffic and the complexity of pages, the process in...

They don't know yet. It just seems that having the cache enabled causes load to rise significantly, sometimes spiking very high; where cache off has load running at 1.5-2 at peak hours (e.g. now), it was averaging 8-12 with cache on with spikes hitting up into the 30s or 40s for no obvious...

I also have Cloudflare's full managed ruleset and whatever voodoo they do, plus mod security running actively identifying malicious traffic. But as you'll see above, the issue lies with LSWS/LS Cache and/or the Mediawiki LS Cache plugin, not bots. Taking off caching dropped load to under 1.0.

Just noting that Litespeedtech is looking into it. Load without cache on is much, much lower than with cache on, for whatever reason:

So, this is crazy, but... this thread on the OLS forum made me try something that seemed utterly dumb: simply shutting off caching entirely on the site. And this is the result.

Believe me, I have been poring through logs. I even know an approximate time where everything went from perfect to bad, thanks to our ad provider who notified me of the issue while travelling -- it started happening around 2PM Eastern time on the 27th, and has persisted since then. So, too, have...

So as I understand it, LSWS uses its LSPHP to run PHP, so ... isn't that where I should be looking, the PHP and external app settings in the control panel? If not, what should I look at? Just PHP.ini? The only issue I have with MySQL at the moment is that I want to switch to use...

CF, using WAF rules. It's possible that all the bots on the net have swarmed on to us because they noticed it is a new server, and that after a day or two all this will diminish, but in all honesty I know this server will be called on to do hundreds of requests per second come later this year...

Perhaps so and I will study that, but even having blocked bots and put Cloudflare in 'I'm Under Attack!" Mode, it has hardly made a difference to traffic or load levels. Most of our traffic is legitimate, near as I can tell. I'm fairly convinced I've misconfigured something, but have no clue what.

I did get some tips on using logs and tail and such, but more ideas welcome. That said, traffic levels seem totally normal now. 30 request a second, 90% of which go to cache, should not be causing these loads.

After many trials and errors, my Mediawiki install seemed to finally be on a good footing, with load on our 8 core server being between about 1 to 2-ish generally. Then, for no apparent reason, after several days of being fine, load suddenly ramped up wildly. Initial diagnosis from our tech...

What's the easiest way to fully purge all caches? Having an issue with the Wikipedia plugin and pages don't seem to be purging as they should.

When I look around on the website, I see references to LSWS having a tab in the Web Admin Console for websocket proxying specifically... but my up-to-date LSWS does not seem to have it, and I'm not sure why. Anyone have any information on this?

Hah. Well, the motto of HBO was, "It's not TV, it's HBO"... but after some certain shows had a high level of sex and nudity, there started to be jokes about young actors getting cast in those roles that, hey, "It's not porn, it's HBO" In theory we could run more than one server, but OTOH we...

No, not porn... but hey, it's HBO, so... No, we run one of the top sites in the world for a globally popular series and TV show. When the show is on, millions of people who Google details about characters or events are likely to see us as the #1 result and rush over to our site. It's a huge...

Well, most of the time it doesn't, but sometimes it does. I suppose I can leave off caching from CF fo now, but down the road I'm definitely going to have to use it or our bandwidth charges are going to be over the moon. And to be honest, we were thinking of going Enterprise to use their full...

Well, when I say "most", I mean like 50%. But there's substantial amount of visitors from outside the US, particularly Western and Central Europe, where I think a CDN like cloudflare does work great. And there's still the issue of traffic. When traffic surges, it surges BIG, and with...

Most visitors are from the US by far. I think I already have CF configured that way but will double check. The main thing is Cloudflare's caching of images and such helps a _lot_ with bandwidth usage. Certain times of the year, we easily hit big overages, which depending on host could get very...

You're right, I forgot that now that LSCache is working, our cloudflare caching is also intervening. Once I turned it off I could see it working properly. Maybe I need to now change cloudflare rules so it only takes cares of images and stuff and not the actual pages, leaving that to LSCache.

Erk. This made me check the Mediawiki plugin's claim that it purges cache when a page is updated... but it seems that's only the private cache, the public cache doesn't get cleared. That's a problem.