Date: Mon, 24 Jan 2005 15:15:58 -0800 From: Julian Elischer <julian@elischer.org> To: Joe Marcus Clarke <marcus@freebsd.org> Cc: threads@freebsd.org Subject: Re: [PATCH] Dynamic thread stack size Message-ID: <41F581AE.2050603@elischer.org> In-Reply-To: <1106595434.28710.29.camel@shumai.marcuscom.com> References: <Pine.GSO.4.43.0501241431090.18241-100000@sea.ntplx.net> <1106595434.28710.29.camel@shumai.marcuscom.com>
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Joe Marcus Clarke wrote: >On Mon, 2005-01-24 at 14:31 -0500, Daniel Eischen wrote: > > >>On Mon, 24 Jan 2005, Joe Marcus Clarke wrote: >> >> >> >>>On Sat, 2005-01-22 at 13:03 -0500, Daniel Eischen wrote: >>> >>> >>>>On Fri, 21 Jan 2005, Joe Marcus Clarke wrote: >>>> >>>> >>>> >>>>>In a follow-up to the previous discussion on increasing our default >>>>>thread stacksize, I thought I'd look at how some other BSD >>>>>implementations do it. Mezz mentioned that he thought NetBSD had a 2 MB >>>>>default stacksize, so I took a look. >>>>> >>>>>What I found was that NetBSD doesn't have a static default stacksize. >>>>>Instead, they use the stacksize rlimit and a PTHREAD_STACKSIZE >>>>>environment variable to get both the initial stacksize as well as each >>>>>thread's default stacksize. I thought this would be a really good way >>>>>of doing things, so I ported their work to FreeBSD. >>>>> >>>>> >>>>Please no. I don't want to have to set any more environment >>>>variables or login defaults to get libpthread to work with >>>>certain ports. >>>> >>>> >>>No need. The default stacksize rlimit is more than enough (64 MB) to >>>satisfy every one of the affected ports thus far. The environment >>> >>> >>And 64MB is way too big for a default stack size... >> >> > >Okay, so lobby that it gets reduced in login.conf. Why should threads >be given less stack than processes, especially the initial thread? > because there may be 50 of them? (or maybe even 500?) Threaded programs are supposed to be aware that stack is a limited resource. > >Joe > > >
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