%CPU utilization is a lie(brendanlong.com)

396 points by BrendanLong 1 year ago | 135 comments

Blog post by Brendan Long arguing that %CPU utilization reported by tools like top misrepresents how close servers are to their actual capacity limits.

3,200% CPU Utilization(josephmate.github.io)

470 points by atomlib 1 year ago | 207 comments

Blog post debugging a Java service hitting 3,200% CPU across 32 cores, traced via thread dumps to concurrent unsynchronized TreeMap.put calls.

Notes from Optimizing CPU-Bound Go Hot Paths(blog.andr2i.com)

17 points by nnx 5 months ago | 2 comments

It's Always TCP_NODELAY(brooker.co.za)

446 points by eieio 10 months ago | 160 comments

Marc Brooker's blog post arguing that Nagle's algorithm is outdated and TCP_NODELAY should be enabled to avoid latency issues in distributed systems.

It's always TCP_NODELAY(brooker.co.za)

744 points by todsacerdoti 2 years ago | 232 comments

Marc Brooker's blog post arguing that Nagle's algorithm causes latency issues in distributed systems and TCP_NODELAY should be enabled by default.

How did AMD Ryzen get 50% faster in two years?(lemire.me)

466 points by ibobev 1 month ago | 190 comments

Daniel Lemire blog post examining how AMD Ryzen processors became about 50% faster over two years.