[pve-devel] pve-kernel package : add irqbalance as recommended ? (like debian linux-image package)

[Stefan Priebe - Profihost AG]

Am 20.02.2016 um 11:19 schrieb Dietmar Maurer:
> 
>> tuned tool from redhat is just for tunning kernel params, cpu gouvernor,
>> ioscheduler, ... from profiles (high-bandwith vs low latency for example)
>>
>> It's not related to ksm.
>>
>> you can find details about the profils and tuning values here :
>>
>> https://videos.cdn.redhat.com/summit2015/presentations/11952_performance-tuning-red-hat-enterprise-linux-platform-for-databases.pdf
>>
>> (page 8).
>>
>>
>> Could be great to have something similar in proxmox. (should be east to
>> implement), choosing in gui for each server, presets of tuning.
> 
> I still don't get it - why does it require a daemon to set static values like
> io-scheduler?

oh no there not only static values.

For example for low latency you need to open /dev/cpu_dma_latency file
and are not allowed to close that file handle and there is some other
stuff going on the daemon - can't remember right now.


Stefan

>  
>> BTW, I have redone a lot of tests with transparent hugepage and last kernels,
>> it seem to works fine with default MADVISE.
>> I have done tests with a lot of databases, redis, mongo  and I don't have seen
>> any regression, and some boost with java application
> 
> great
>