We recently upgraded one of our DNS servers to RHEL 6. The other two servers are running RHEL 5. The new system is showing much higher CPU load than the other two (RHEL 5 machines sit around 11-15%). I am not sure if this is related to the OS versions or something else. The build procedure for the new system is completely different than before which could also be the cause. Any ideas why this could be happening?
> top last pid: 9651; load avg: 0.00, 0.00, 0.00; up 2+01:08:04 08:31:10 647 processes: 1 running, 646 sleeping CPU states: 1.4% user, 0.0% nice, 3.2% system, 95.4% idle, 0.0% iowait Kernel: 137575 ctxsw, 7682 intr Memory: 2023M used, 21G free, 318M buffers, 747M cached Swap: 26G free PID USERNAME THR PRI NICE SIZE RES SHR STATE TIME CPU COMMAND 8566 root 27 20 0 1921M 296M 2848K sleep 26:56 132% named > rndc status version: 9.9.4-P1 () <id:07aaf1ef> CPUs found: 24 worker threads: 24 UDP listeners per interface: 24 number of zones: 169 debug level: 0 xfers running: 0 xfers deferred: 0 soa queries in progress: 0 query logging is ON recursive clients: 22/9900/10000 tcp clients: 0/100 server is up and running -- Daniel
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