Date: Fri, 22 Jan 1999 20:44:17 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Andrzej Bialecki <abial@nask.pl> Cc: current@FreeBSD.ORG Subject: Re: kvm_getswapinfo() function added to libkvm. top, pstat, systat updated Message-ID: <199901230444.UAA58355@apollo.backplane.com> References: <Pine.BSF.4.02A.9901230132160.24442-100000@korin.warman.org.pl>
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:On Fri, 22 Jan 1999, Matthew Dillon wrote:
:
:> A new function, kvm_getswapinfo(), has been added to libkvm.
:>
:> pstat, systat, and top have been updated to use the new function.
:
:Have you considered using sysctl(3) for this instead? If yes, could you
:explain why the libkvm seemed better to you?
That's easy. Look how much code kvm_getswapinfo() is and tell me
that you want to waste that memory in the kernel.
:(I'm asking because with libkvm you need to use /dev/kmem _and_ you need
:to access symbol table - this doesn't work with stripped kernels).
:
:Andrzej Bialecki
You can boot with a stripped kernel and then point the system's notion
of the kernel binary to a non-stripped version.
That doesn't handle permissions, but getting deep-down swap information
is not something any standard utility ever needs to do. It isn't something
like getting the load average, which utilities may legitimately need.
For that reason, I see no problem leaving kvm_getswapinfo() in libkvm.
-Matt
Matthew Dillon
<dillon@backplane.com>
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