Re: [Xen-devel] [PATCH 1/3] Make credit2 the default scheduler

2018-02-07 Thread George Dunlap
On 02/06/2018 10:39 PM, Dario Faggioli wrote: > On Tue, 2018-02-06 at 17:02 +, George Dunlap wrote: >> On 02/06/2018 06:18 AM, Juergen Gross wrote: >>> On 05/02/18 17:53, Dario Faggioli wrote: Considering we're releasing in June, but freezing in March, do we think it is sti

Re: [Xen-devel] [PATCH 1/3] Make credit2 the default scheduler

2018-02-06 Thread Dario Faggioli
On Tue, 2018-02-06 at 17:02 +, George Dunlap wrote: > On 02/06/2018 06:18 AM, Juergen Gross wrote: > > On 05/02/18 17:53, Dario Faggioli wrote: > > > > > > Considering we're releasing in June, but freezing in March, do we > > > think > > > it is still early enough? > > > The 4.11 release is

Re: [Xen-devel] [PATCH 1/3] Make credit2 the default scheduler

2018-02-06 Thread George Dunlap
On 02/06/2018 06:18 AM, Juergen Gross wrote: > On 05/02/18 17:53, Dario Faggioli wrote: >> On Mon, 2018-02-05 at 13:01 +, George Dunlap wrote: >>> And in any case, making those improvements >>> on credit2 will be easier than on credit. >>> >> And, if possible, I agree with George on this even m

Re: [Xen-devel] [PATCH 1/3] Make credit2 the default scheduler

2018-02-05 Thread Juergen Gross
On 05/02/18 17:53, Dario Faggioli wrote: > On Mon, 2018-02-05 at 13:01 +, George Dunlap wrote: >> And in any case, making those improvements >> on credit2 will be easier than on credit. >> > And, if possible, I agree with George on this even more! > > One thing I think we should consider, thou

Re: [Xen-devel] [PATCH 1/3] Make credit2 the default scheduler

2018-02-05 Thread Dario Faggioli
On Mon, 2018-02-05 at 13:01 +, George Dunlap wrote: > On 02/05/2018 11:45 AM, Andrew Cooper wrote: > > > Here is a summary of data from an intern e-mail Dario sent about 6 > months ago: > > * DVDbench: On underloaded systems, credit2 outperformed credit1 by > about 4%. On overloaded systems,

Re: [Xen-devel] [PATCH 1/3] Make credit2 the default scheduler

2018-02-05 Thread George Dunlap
On 02/05/2018 11:45 AM, Andrew Cooper wrote: > On 05/02/18 11:36, George Dunlap wrote: >> Credit2 was declared "supported" in 4.8, and as of 4.10 had two other >> critical features implemented (soft affinity / NUMA and caps). >> >> Signed-off-by: George Dunlap > > On what justification? > > Swit

Re: [Xen-devel] [PATCH 1/3] Make credit2 the default scheduler

2018-02-05 Thread Andrew Cooper
On 05/02/18 11:36, George Dunlap wrote: > Credit2 was declared "supported" in 4.8, and as of 4.10 had two other > critical features implemented (soft affinity / NUMA and caps). > > Signed-off-by: George Dunlap On what justification? Switching the default involves demonstrating that the new defau

[Xen-devel] [PATCH 1/3] Make credit2 the default scheduler

2018-02-05 Thread George Dunlap
Credit2 was declared "supported" in 4.8, and as of 4.10 had two other critical features implemented (soft affinity / NUMA and caps). Signed-off-by: George Dunlap --- CC: Ian Jackson CC: Wei Liu CC: Andrew Cooper CC: Jan Beulich CC: Tim Deegan CC: Stefano Stabellini CC: Konrad Wilk CC: Dari