Date: Fri, 4 Dec 2009 22:11:14 +0300 From: Igor Sysoev <is@rambler-co.ru> To: freebsd-net@freebsd.org Subject: Re: hw.bge.forced_collapse Message-ID: <20091204191114.GB76992@rambler-co.ru> In-Reply-To: <20091204173243.GC16491@michelle.cdnetworks.com> References: <20091204075440.GH14822@rambler-co.ru> <20091204173243.GC16491@michelle.cdnetworks.com>
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On Fri, Dec 04, 2009 at 09:32:43AM -0800, Pyun YongHyeon wrote: > On Fri, Dec 04, 2009 at 10:54:40AM +0300, Igor Sysoev wrote: > > I saw commit introducing hw.bge.forced_collapse loader tunable. > > Just intresting, why it can not be a sysctl ? > > I didn't think the sysctl variable would be frequently changed > in runtime except debugging driver so I took simple path. I do not think it's worth to reboot server just to look how various values affect on bandwidth and CPU usage, expecially in production. As I understand the change is trivial: - CTLFLAG_RD + CTLFLAG_RW since bge_forced_collapse is used atomically. -- Igor Sysoev http://sysoev.ru/en/
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