Date: Fri, 1 Aug 2003 01:44:15 -0700 From: David Schultz <das@freebsd.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: arch@freebsd.org Subject: Re: headsup: swap_pager.c Message-ID: <20030801084415.GA75930@HAL9000.homeunix.com> In-Reply-To: <6612.1059726521@critter.freebsd.dk> References: <20030801082336.GA75619@HAL9000.homeunix.com> <6612.1059726521@critter.freebsd.dk>
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On Fri, Aug 01, 2003, Poul-Henning Kamp wrote: > In message <20030801082336.GA75619@HAL9000.homeunix.com>, David Schultz writes: > > >But since you just ripped out the debugging stuff for the radix > >tree bitmap, I'm guessing that your plan is to replace the bitmap > >with something else within the next few days anyway... > > I actually do not plan on replacing the radix code in this round. > I want to see how it performs before I vote it out. I don't currently > see any resource managers in the kernel which obviously would do > a better job. So why has the debugging support for the radix tree bitmaps been removed, then? > >Can you please describe how the interface between ccd(4) and the > >swap subsystem will work? I like this idea, but it isn't > >immediately obvious how you plan to implement striping based on > >load and dynamic addition and removal of swap space. > > ccdconfig -c ccd0 128 0 /dev/da0b /dev/da1b /dev/da2b > swapon /dev/ccd0 That's what I thought, but the swap subsystem just sees one big virtual disk, and I now add /dev/da3b, how will the new space be interleaved with the existing space? How is it possible to support anything other than fixed interleave in this model?home | help
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