[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [PATCH] sched: print information about scheduler granularity

On 16.04.20 11:20, Sergey Dyasli wrote:
On 16/04/2020 09:57, Jürgen Groß wrote:
On 16.04.20 10:33, Sergey Dyasli wrote:
Currently it might be not obvious which scheduling mode is being used
by the scheduler. Alleviate this by printing additional information
about the selected granularity. Messages now look like these:

1. boot
(XEN) [00089808f0ea7496] Using scheduler: SMP Credit Scheduler (credit) in 
core-scheduling mode

2. xl debug-keys r
(XEN) [   45.914314] Scheduler: SMP Credit Scheduler (credit) in 2-way 
core-scheduling mode

Signed-off-by: Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>

Hmm, do we need that?

The xen commandline ins part of the boot messages and is contained
in the "xl info" output.

It's true that you can see "sched-gran=core" in "xl info" output. But that's
just the switch - not the end result. A user might want to verify that he did
everything correctly and core-scheduling mode has indeed been enabled.

I'm planning to add this information in the pending hypfs (per cpupool).

I'm not opposed to your patch, but as soon as we have per-cpupool
granularity it should be reverted again.




Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.