SMP and 9.4.1-P1

[Danny Mayer]

Pavel Urban wrote:
> Hello,
> 
> I have a caching nameserver running 9.4.1-P1 (Sun Fire X4100, 2CPU, 
> RedHat Linux 4, x86_64 arch). I have a feeling that BIND is using only 
> one CPU, but I don't know how to confirm it. I've tried to run it 
> without '-n' or with '-n 2' but without visible difference. Maybe 'top' 
> is just lying...
> 

Whether it's going to be able to use multiple CPU's depends on whether
it's been built with threads enabled. If it's built single threaded it
cannot take advantage of the other CPU. See the README file on how to
build it with multithreading.

Danny

> top - 12:54:09 up 23 days, 22:28,  1 user,  load average: 0.86, 0.93, 1.15
> Tasks:  56 total,   3 running,  53 sleeping,   0 stopped,   0 zombie
> Cpu0  : 69.3% us, 26.0% sy,  0.0% ni,  0.0% id,  0.0% wa,  0.7% hi,  4.0% si
> Cpu1  :  0.0% us,  0.0% sy,  0.0% ni, 100.0% id,  0.0% wa,  0.0% hi, 
> 0.0% si
> Mem:   5990192k total,  4165916k used,  1824276k free,   109744k buffers
> Swap:  6289436k total,        0k used,  6289436k free,   331916k cached
> 
>    PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>   3330 named     25   0 3558m 3.4g 1684 R  100 60.4  17904:45 named
>      1 root      16   0  4756  552  460 S    0  0.0   0:00.45 init
>      2 root      RT   0     0    0    0 S    0  0.0   0:00.20 migration/0
>      3 root      35  19     0    0    0 S    0  0.0   0:09.75 ksoftirqd/0
>      4 root      RT   0     0    0    0 S    0  0.0   0:00.23 migration/1
>      5 root      34  19     0    0    0 S    0  0.0   0:21.27 ksoftirqd/1
>