FreeBSD 10 under XenServer 6.2(SP1) - Higher load average?

[Jeroen van der Ham]

Hi,

I’ve noticed this already back in June: http://lists.freebsd.org/pipermail/freebsd-xen/2013-June/001639.html

Nothing really came out of the discussion there, but it doesn’t really seem worrying or have much an impact on performance though.

Jeroen.



On 30 Jan 2014, at 15:10, Karl Pielorz <kpielorz_lst at tdx.co.uk> wrote:

> 
> I've just installed a couple of FreeBSD 10-R instances on our Xen pool. The load averages on these machines seems to run higher for an idle box, than FreeBSD 9.x did
> 
> e.g. 10.0-R (amd64 GENERIC):
> 
> last pid:  4219;  load averages:  0.31,  0.23,  0.12 up 0+00:07:45  14:04:08
> 15 processes:  1 running, 14 sleeping
> CPU:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
> Mem: 16M Active, 15M Inact, 44M Wired, 20M Buf, 1893M Free
> Swap: 2046M Total, 2046M Free
> 
> 
> A 9.2-STABLE (amd64 XENHVM) instance on the same XenServer:
> 
> last pid: 76440;  load averages:  0.00,  0.00,  0.00 up 2+15:07:27  14:05:10
> 22 processes:  1 running, 21 sleeping
> CPU:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
> Mem: 13M Active, 128M Inact, 91M Wired, 59M Buf, 237M Free
> Swap: 494M Total, 494M Free
> 
> 
> Both have xe-guest-utilities installed.
> 
> The second box is actually technically busier than the first (as it's routing traffic between it's interfaces - admittedly, not much).
> 
> But the load average on 10.0-R never settles to zero (like it did for 9.x)
> 
> Just a bit confused as to if the user, nice, system and interrupt times are zero - how can the LA be >0?
> 
> Anyone else noticed this? - I know an LA of 0.31 isn't the end of the world - but it's a bit of a jump on 0.00...
> 
> -Karl
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