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Re: [Xen-devel] [PATCH v2 0/4] xen/rcu: let rcu work better with core scheduling

On 18/02/2020 13:15, Igor Druzhinin wrote:
> On 18/02/2020 12:21, Juergen Gross wrote:
>> Today the RCU handling in Xen is affecting scheduling in several ways.
>> It is raising sched softirqs without any real need and it requires
>> tasklets for rcu_barrier(), which interacts badly with core scheduling.
>> This small series repairs those issues.
>> Additionally some ASSERT()s are added for verification of sane rcu
>> handling. In order to avoid those triggering right away the obvious
>> violations are fixed.
> Initial test of the first 2 patches is promising. Will run more tests
> over night to see how stable it is.

I stress-tested it over night and it seems to work for our case.

Tested-by: Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>


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