Hey there! We've found the following might help you get unblocked faster:

• 🧵 I need help with auditing my usage logs. Got charged way more than I expected
• 🧵 cpu usage not showing
• 🧵 n8n Memory usage spike
• 🧵 Increased CPU usage with Metal Server

If you find the answer from one of these, please let us know by solving the thread!

hey, what type of service was this? (redis, kafka, db, the repo, etc). any sort of additional info you can give or logs related to it will help us point you in the right direction.

Do you see any equivalent spike in http traffic or other variables?

It's an Express API, I've been running this service since February 2025 and this is the first time it has spiked so much.

This is the first thing I checked and yes, there is a spike, but my service usually has a spike of requests, but the CPU scale up doesn't seem proportional to the requests (most of the spike is 4xx requests which shouldn't consume much resources), here is the graph:

did you see a jump in worker count in your logs right before the spike? your app getting 3k requests is normal and shouldnt remotely be hitting that high of a cpu usage. I've hit ~1m requests and my peak was 6 vCPU (and about 8gb memory).

i dont think you can retroactively go back and figure out what caused it (unless youve logged it), but you can add logs in your API to figure out what is the root cause if it happens again, so likely logging workers/CPU, adding a CPU profile hook + access logs/db pool.

if you have any logs that might be helpful, can you add them? you can see your logs for that deployment if you just go to service -> deployment and view logs

I'm very doubtful it's my app that was actually consuming all these resources, it doesn't make any sense that my container would use 60 vCPU for 9 hours.

If its just a random one off spike I won't bother creating this support ticket, 60 vCPUs for 9 hours continuously just simply doesn't make sense.

It stopped at midnight because the container was redeployed, it didn't magically fix itself. I doubt that something triggered the container to go out of control.

Someone from Railway team should look into this.