CPU states, low idle %
I'm using RHEL 3 on an AMD Opteron machine (2.5 +GHz, 1GB RAM). We're going to be conducting a few surveys on campus and expecting a HUGE number of http requests.
While testing the setup, sometimes, the CPU idle% as shown by top goes down to as low as 42%. The remaining CPU% went almost entirely to the nice value. However, the load average was 0.00.
We're running a cron job that monitors top every twenty minutes, and in three days of trial run, the lowest CPU idle% shown has been 42%, and thehighest load average 0.15.
What does this mean, is there any reason to worry about the system crashing in the middle of a survey if the idle% is too low?? If that happens, I may not get my recomendations for an MS!!