On Fri, Sep 20, 2019 at 5:00 AM David Collier-Brown via talk <talk@gtalug.org> wrote:

On 2019-09-19 11:11 p.m., William Park via talk wrote:

I just tried kernel 5.3.0, and it's noticeably faster in opening windows. Not sure about overall throughput, though.

I'd be interested in how quick it is in unblocking processes who just got I/O. I have servers doing arrays of heavily parallel network requests who race each other to get back, but then compete to get a core to service them.

Ha, you might be interested in the latest thing we are working on upstream. We discussed it last week at Linux Plumbers. We are calling it latency-nice (but as all good programmers know, naming is hard and this will probably change). Right now the scheduler is not too good at figuring out which process should get a place to run at quickly, and by providing a latency-nice tunable, you can ensure your latency sensitive processes are placed on the runqueue quickly. Keep an eye out for this, hopefully we will get it upstream in a few months. Dhaval

--dave

-- David Collier-Brown, | Always do right. This will gratify System Programmer and Author | some people and astonish the rest davecb@spamcop.net | -- Mark Twain

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