4 ms·

you may have been downvoted for making an unsubstantiated claim that most people don't know when their CPU is running at 100%

• TickleSteve 10y ago
  ...and that is true. When was the last time you monitored what parts of your system were truly I/O bound and not just blocked on another task?
  • kod 10y ago
    Yesterday?
  • monix 10y ago
    People that end up in a position to care about performance are using profilers and bechmarks. This is actually the first rule: don't guess, measure. Of course it helps when the platform has the proper tools for it. I end up using JMH and YourKit Profiler weekly, because a memory or CPU leak can crash our process and we have pretty strict reliability requirements with a single server processing about 5000 events per second - not extremely demanding, but when it crashes, we can lose money, with the redundancy infrastructure being pretty new.
  • sidlls 10y ago
    This very thing has occupied my day job for at least four months now. It happens when a pre-existing system one has to improve has lots of DB-heavy and compute-heavy operations commingled.