Keeping systemd services lean
MemoryHigh is a gentle way to make a service reclaim memory before it ever gets near the hard limit. Pair it with MemoryMax and you rarely need to think about OOM again.
Small things I learned while tinkering with servers.
MemoryHigh is a gentle way to make a service reclaim memory before it ever gets near the hard limit. Pair it with MemoryMax and you rarely need to think about OOM again.
Modern kernels autotune well. BBR plus fq covers most of what I used to do with a dozen sysctl lines.
A webroot challenge and a reload hook are all you need. No restarts, no dropped connections.