Hello everyone, I have been running an instance of Discourse for the last 2 years with Digital Ocean without any problem but since the last 2 weeks, it became very slow or unavailable most of the time. I have upgraded my hosting to the following one, it’s a bit better but still facing the same pro…

top - 04:41:15 up 1 day, 25 min, 1 user, load average: 6.32, 7.70, 6.89 Tasks: 162 total, 4 running, 158 sleeping, 0 stopped, 0 zombie %Cpu(s): 64.2 us, 19.9 sy, 0.0 ni, 6.9 id, 7.7 wa, 0.0 hi, 1.3 si, 0.0 st KiB Mem : 4048268 total, 116444 free, 2742964 used, 1188860 buff/cache K…

Given the 1m load average is nearly half what it was in the previous screenshot, and %iowait is still pretty high, I’d say you’re probably I/O constrained, likely due to swapping. Confirm with sar -W 1 whilst the system is at peak unhappiness, and then upgrade RAM.

Thanks Matt, Here is the output of the sar -W 1 (I have no idea what it is :confused: ) 04:52:49 AM pswpin/s pswpout/s 04:52:50 AM 95.00 2.00 04:52:51 AM 166.00 0.00 04:52:52 AM 40.00 0.00 04:52:53 AM 19.00 0.00 04:52:54 AM 74.00 0.00 04:52:55 AM 125…

The headings should give you a hint… “pages swapped in per second” and “pages swapped out per second”. Each page is (usually) 4k, so swapping in 1,000 pages in a second means you’re copying about 4MB of data off disk and into RAM. That’s gonna take a while. You’re definitely due for a RAM upgrade…

Running this many unicorn workers on two virtual cpus that already run redis and pg does not make sense. I would run 3 workers max, and give the leftover ram to postgres.

Thanks guys. What I don’t understand is that I had 2GB RAM and it was working well, then suddenly I started to have a high load average. I already upgraded to 4GB RAM and I am still facing the same issue, how is it possible that Discourse suddenly needs so much more RAM? I also changed my app.yml …

[imagen] JohnDoux: I also changed my app.yml with UNICORN_WORKERS: 3 , it was 8 before. let us know how you go with the safer number

[imagen] JohnDoux: how is it possible that Discourse suddenly needs so much more RAM? You probably started serving a whole lot more traffic.

[imagen] mpalmer: You probably started serving a whole lot more traffic. Well actually that’s pretty much the opposite :confused: It’s a lot more quiet during summer vacation. So after 2 hours and around 30 users live: top - 06:11:09 up 1 day, 1:55, 1 user, load average: 4.09, 3.24, 2.91…

Discourse no disponible con alta carga promedio

Soporte

sam (Sam Saffron) 3 Septiembre, 2018 11:03 12

How many page views are you getting? Where is the traffic coming from? Look at you nginx logs, maybe your server is under some sort of attack

Tema		Respuestas	Vistas
Due to extreme load, this is temporarily being shown to everyone... when it's not really the case Self-hosting server-resources	19	1987	21 Julio 2023
Discourse installation has been getting slower and slower and slower Self-hosting server-resources	36	2124	15 Abril 2023
Is 1GB RAM enough for both WordPress and Discourse? Self-hosting server-resources	21	4984	3 Marzo 2017
Best configurations for speeding up standalone discourse Self-hosting server-resources	25	4617	14 Febrero 2024
Trying to troubleshoot I/O Wait bottleneck Self-hosting hosting	1	1104	30 Octubre 2020

Discourse no disponible con alta carga promedio

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