headsup: swap_pager.c
Poul-Henning Kamp
phk at phk.freebsd.dk
Sat Aug 2 06:46:49 PDT 2003
In message <20030802221832.S41132-100000 at hewey.af.speednet.com.au>, Andy Farkas
writes:
>Poul-Henning Kamp wrote:
>
>> Setting NSWAPDEV=1 is not an option, because that means that
>> administrators which find themselves in a pinch can not add another
>> swap-space to ride off a storm.
>
>You still are not explaining why the current code is wrong. You say
>"bogo-vnode". Please explain what that means.
A bogos vnode.
>What does "in a pinch" mean??
That for instance you are running out of swap, if NSWAPDEV==1 you cannot
add another swapdev because the one and only slot is occupied (and the
device is filled too).
>What do those numbers in kern.malloc mean??
That the corresponding amount of RAM is unchangably occupied by a table
which is 3/4 empty and therefore nothing else can use that RAM productively.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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