Subject: Re: buffer cache memory management revision
To: None <firstname.lastname@example.org>
From: Jason Thorpe <email@example.com>
Date: 12/01/2003 13:43:11
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On Dec 1, 2003, at 12:17 PM, <firstname.lastname@example.org> wrote:
> I for sure have an upper bound of it anyway because the kernel vm
> area may be very limited in size, so the only question is if the
> buffers must fight with other users of the same map.
Well, but your upper-bound should come from a run-time tunable, rather
than a boot-time limit. We should be striving to rid ourselves of as
many boot-time limits as is feasible.
> Is the uarea the only other frequent user of the kernel_map today?
> In that case it may not be a big problem, but it still is lurking
> around down there.
U-area, bus_dma(9), and pools (on systems that don't have a
direct-mapped memory segment that can be used).
-- Jason R. Thorpe <email@example.com>
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