My site has seen a slight and sudden slowdown when loading pages lately. I had an issue where a backup was generated and exceeded the space on my digital ocean volume and took down the site. Since then I have had a hard time rebuilding the site. These events could be related based on the timing. Cur…

Thanks! If you had memory shortage, the cache numbers would be small, and if paging a lot, the si and so columns would be large. But this is not so. We do see a big peak in bi and bo, which is typically disk activity. I wonder if something somewhere is building or repairing or scanning something. …

Thanks for the suggestion. I’m not familiar with the command, is there something in particular I should be looking for? r b swpd free buff cache si so bi bo in cs us sy id wa st 1 0 475136 144304 20296 1786100 2 3 2622 447 44 50 19 3 72 1 4 0 0 475136 143…

This is great advice, thank you!

[image] I’m sitting at 80% memory usage. Is this typical? The dip is because I stopped and restarted the app using the launcher. droplet: 4 GB Memory / 2 AMD vCPUs / 80 GB Disk I spun up a new droplet and put in a backup of the forum (without images) and I get similar behaviour htop output, sor…

80% doesn’t sound problematic to me. More interesting is that you have a lot of sidekiq processes and yet I see the annotation “0 of 5 busy” - you have more than 5. You also seem to have a lot of unicorn threads. I suggest a new topic here, with your htop output, including your yml config as to w…

[image] Ed S: yet I see the annotation “0 of 5 busy” I have very similar htop on same VPS (different processor, though) and I haven’t change anything from default. Without knowing anything I would claim that shows only one thing: there isn’t too much traffic, if any, at that point.

Ah yes, I should have checked my own htop: very similar. Another very different idea, for the original observation of ‘a slowdown’ - to activate the mini-profiler using Alt-P, then accessing a typical large page on your forum, and seeing what queries are being made and how long they take, by clicki…

I was able to do a apt upgrade and also rebuild. This problem: Pups error on rebuild 🐕 was preventing me from rebuilding for a while Since the rebuild, it feels improved. I don’t like operating by feeling though in this case, I’d rather have analytics and measurable data. I appreciate the tips @Ed_…

How to diagnose a slowdown?

Product Support Self-hosting

Ed_S (Ed S) February 8, 2023, 10:19pm 2

My first port of call would be
vmstat 5 5
on the command line.

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How to diagnose a slowdown?

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