linux-kernel - Re: [ANN] Userspace M-on-N threading model implementation. Alpha release.

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Message-ID: <75b66ecd0701312028w7866c608hbf70593055c92b19@mail.gmail.com>
Date:	Wed, 31 Jan 2007 23:28:07 -0500
From:	"Lee Revell" <rlrevell@...-job.com>
To:	"Evgeniy Polyakov" <johnpol@....mipt.ru>
Cc:	linux-kernel@...r.kernel.org, libc-hacker@...rces.redhat.com,
	libc-alpha@...rces.redhat.com
Subject: Re: [ANN] Userspace M-on-N threading model implementation. Alpha release.

On 1/29/07, Evgeniy Polyakov <johnpol@....mipt.ru> wrote:
> 1. Scheduling fairness.
> Since kernel does not know about multiple threads behind given process,
> it can not add it appropriate number of timeslices for execution.
> Can be solved either by more tight collaboarion of the userspace and
> kernelspace schedulers or simply by increasing process' nice value.

nice value is only meaningful for SCHED_OTHER.  How will you handle a
multithreaded realtime application that uses SCHED_OTHER as well as
SCHED_FIFO threads?

Lee
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