Date: Thu, 15 Feb 2001 21:34:19 -0800 (PST) From: Yifeng Xu <websoft@yahoo.com> To: Seth Leigh <seth@pengar.com>, freebsd-smp@freebsd.org Subject: Re: possible problem with SMP? Message-ID: <20010216053419.25951.qmail@web1704.mail.yahoo.com> In-Reply-To: <5.0.2.1.0.20010215204946.027a3c88@hobbiton.shire.net>
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by reading jasone's KSE project web pages, I do think KSE will support PTHREAD_SCOPE_SYSTEM very well, FreeBSD will do support 1:1 and M:N thread model, it seems KSE will have bright future, I think it's perfect and I am waiting. David Xu --- Seth Leigh <seth@pengar.com> wrote: > With the normal threads library under Solaris (/usr/lib/libthread.so.1 and > /usr/lib/libpthread.so.1) the default mode of operation is indeed > n:m. However, if you declare a pthread_attr_t and call > pthread_attr_setscope() on it with PTHREAD_SCOPE_SYSTEM, then any threads > created subsequently are bound to an lwp. Threads created with > PTHREAD_SCOPE_SYSTEM are 1:1. > > Additionally, with Solaris 8 there is an alternate threads library > (/usr/lib/lwp/libpthread.so.1) which is strictly 1:1. Ie: bound threads > are all you get, and all scheduling and such is left to the kernel. > > Seth > > At 05:22 PM 2/15/2001 -0800, Arun Sharma wrote: > >On 15 Feb 2001 06:37:23 +0100, Nate Williams <nate@yogotech.com> wrote: > > > Sun's JDK uses a one-one mapping, because > > > >Do you have any references for this ? libpthread on Solaris uses n:m > >mapping, AFAIK. > > > > -Arun > > > > > >To Unsubscribe: send mail to majordomo@FreeBSD.org > >with "unsubscribe freebsd-smp" in the body of the message > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-smp" in the body of the message __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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