RHEL 6 CPU load

[Blake Hudson]

Daniel, what do you see the load as? I see 4.6% CPU usage (100% possible 
- 95.4% idle).

I'm not sure which versions of BIND you were using on RHEL5, but the 
newer versions do tend to use more CPU usage (I'll assume due to new 
features, patches, etc in the BIND code).

--Blake

- wrote the following on 11/20/2013 9:37 AM:
> 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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