Re: [Xen-users] Xen VMs and Unixbench: single vs multiple cpu behaviour

[Marko ÄukiÄ <marko.djukic@xxxxxxxxx>]

On 26 November 2015 at 09:26, Dario Faggioli <dario.faggioli@xxxxxxxxxx> wrote:
>> In the meantime, Marko, if you're still up for it, can you try these
>> two commands, in your 4 vCPUs VM, and report here the results?
>>
>> From the UnixBench directory:
>>
>>  # ./Run -c 1 spawn
>>
>>  # schedtool -a 1 -e ./Run -c 1 spawn
>>
> Can I see the output of (from inside the guest):
>
> # ls /proc/sys/kernel/sched_domain/cpu0/
> # ls /proc/sys/kernel/sched_domain/cpu0/domain0
> # cat # ls /proc/sys/kernel/sched_domain/cpu0/domain0/name
> # cat # ls /proc/sys/kernel/sched_domain/cpu0/domain0/flags
>
> Regards,
> Dario
> --
> <<This happens because I choose it to happen!>> (Raistlin Majere)
> -----------------------------------------------------------------
> Dario Faggioli, Ph.D, http://about.me/dario.faggioli
> Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
>

The /proc/sys/kernel/sched_domain/cpu0/ folder has only domain0 subfolder.

These are the contents (files) of /proc/sys/kernel/sched_domain/cpu0/domain0:
busy_factor
busy_idx
cache_nice_tries
flags
forkexec_idx
idle_idx
imbalance_pct
max_interval
max_newidle_lb_cost
min_interval
name
newidle_idx
wake_idx

Contents of /proc/sys/kernel/sched_domain/cpu0/domain0/name:
DIE
Contents of /proc/sys/kernel/sched_domain/cpu0/domain0/flags:
4143

And the results of the tests:
1.) ./Run -c 1 spawn

System Benchmarks Partial Index              BASELINE       RESULT    INDEX
Process Creation                                126.0       3223.5    255.8

2.) schedtool -a 1 -e ./Run -c 1 spawn

System Benchmarks Partial Index              BASELINE       RESULT    INDEX
Process Creation                                126.0      19904.9   1579.8

Regards,

Marko

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