Date: Tue, 20 Mar 2001 10:23:50 -0800 From: Alfred Perlstein <bright@wintelcom.net> To: Matt Dillon <dillon@earth.backplane.com> Cc: "Michael C . Wu" <keichii@iteration.net>, izero@ms26.hinet.net, cross@math.psu.edu, grog@FreeBSD.ORG, fs@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: tuning a VERY heavily (30.0) loaded scerver Message-ID: <20010320102350.V29888@fw.wintelcom.net> In-Reply-To: <200103201815.f2KIFR594803@earth.backplane.com>; from dillon@earth.backplane.com on Tue, Mar 20, 2001 at 10:15:27AM -0800 References: <20010320111144.A51924@peorth.iteration.net> <20010320092717.R29888@fw.wintelcom.net> <20010320113818.B52586@peorth.iteration.net> <20010320120112.C52586@peorth.iteration.net> <200103201815.f2KIFR594803@earth.backplane.com>
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* Matt Dillon <dillon@earth.backplane.com> [010320 10:16] wrote: > > :Another problem is that we have around 4000+ processes accessing > :lots of SHM at the same time.. > > How big is 'lots'? If the shared memory segment is smallish, e.g. > less then 64MB, you should be ok. If it is larger then you will > have to do some kernel tuning to avoid running out of pmap entries. kern.ipc.shm_use_phys should remove the need for pv entries. it's the default on solaris. -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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