How would I go about troubleshooting a site that’s become slow (for no apparent reason) today? Resource use is very low: [Screenshot 2024-10-08 at 8.47.41 PM] This is a 16 GB Memory / 4 AMD vCPUs / 200 GB Disk / SFO3 - Ubuntu 24.04 (LTS) x64 droplet with 30% disk used. DigitalOcean Service status has been normal all day. Slow site has been reported in various locations by users. yaml: UNICORN_WORKERS: 8 db_shared_buffers: "1024MB" db_work_mem: "40MB" I’ve rebuilt to latest and gave Sidekiq some more memory UNICORN_SIDEKIQ_MAX_RSS: 1000 Some 429 errors in the console: [Screenshot 2024-10-08 at 9.10.24 PM] [Screenshot 2024-10-08 at 9.23.31 PM] The Error log from the last 3 days: [Screenshot 2024-10-08 at 9.01.03 PM]

Here is the happy conclusion to this saga… After running speedtest-cli and iperf3 network throughput tests which showed abysmally slow speeds between the droplet and the outside world, I asked DigitalOcean to investigate and they concluded after doing their own testing: We have discovered some issues with the hypervisor where your Droplet is located. We are working with our backend team to migrate your Droplet to another hypervisor. All is well again.

I don’t get errors in the console in safe mode, but it’s much slower. It takes about 10-15 seconds to load anything and images are chugging like they are coming over a 14.4 Kbps modem. It took about 20 seconds to load /logs. Going back to /admin took about a minute. A “poll” seems to take a long time: [Screenshot 2024-10-08 at 11.01.06 PM] BTW, these are the plugins running: - git clone https://github.com/discourse/docker_manager.git - git clone https://github.com/discourse/discourse-data-explorer.git - git clone https://github.com/paviliondev/discourse-locations.git - git clone https://github.com/discourse/discourse-affiliate.git - git clone https://github.com/discourse/discourse-yearly-review.git - git clone https://github.com/discourse/discourse-docs - git clone https://github.com/discourse/discourse-subscriptions - git clone https://github.com/paviliondev/discourse-category-lockdown - git clone https://github.com/discourse/discourse-reactions.git

Here are a couple more data points from this morning. Sidekiq seems laid back: [Screenshot 2024-10-09 at 8.08.11 AM] Interesting memory graph - after app rebuilds it’s about 20-30%, then jumps to 46% during a backup and stays there: [Screenshot 2024-10-09 at 8.04.00 AM]

Do you have the infamous badges in posts theme component installed?

This one? [Screenshot 2024-10-09 at 10.11.13 AM]

[图片] Topic history not loading correctly after migration Support It’s so much easier with the URL! Your problem is that you are using the theme-component Post Badges. It’s awful for performance, so please remove it ASAP. Don’t forget to re-enable all you disabled during this journey and thanks for persisting.

Woah! Night and day after removing the Post Badges component. Disabling it did not make a difference, but deleting it did. No more console errors, either. Thanks @Falco!

Welp, I’m afraid that was not it, or at least not the whole thing. Now I’m seeing broken images and this in the console: [Screenshot 2024-10-09 at 2.56.34 PM] [Screenshot 2024-10-09 at 3.04.33 PM] Still slow loading or not loading at all with the spinner going… [Screenshot 2024-10-09 at 2.48.22 PM]

I wonder if this has anything to do with the issue: [图片]What is rebaking and is it necessary when moving a server? So if you restore a backup, and do not rebake, then you will see broken images on your site. Rebaking is required in order to regnerate those optimised images. Discourse will take care of that automatically when you restore a backup. I restored Discourse from a backup about 4 weeks ago when I moved it from an old Ubuntu 16.4 LTS droplet to new one running Ubuntu 24.04. I did not do a manual rebake.

Keeps getting weirder. This is when going from /logs to /admin by clicking the “Back to site” link. [Screenshot 2024-10-09 at 9.37.56 PM]

排查一个本来非常快但突然变慢的网站

产品支持

Falco (Falco) 2024 年10 月 9 日 17:08 5

您是否安装了臭名昭著的徽章帖子主题组件？

话题		回复	浏览量
Site super slow after migration Self-hosting	3	581	2023 年9 月 19 日
Site inaccessible after rebuilding to latest version Product Support	3	819	2019 年3 月 31 日
Troubleshooting severe performance issues with latest Discourse? Self-hosting	30	2476	2021 年4 月 5 日
Are there any commands that will speed up the site? Product Support	19	2629	2020 年12 月 2 日
As of last night site is responding very poorly Product Support	10	1260	2020 年12 月 2 日

排查一个本来非常快但突然变慢的网站

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