Date: Fri, 17 Mar 1995 14:00:42 -0500 From: Garrett Wollman <wollman@halloran-eldar.lcs.mit.edu> To: Lars Koeller <uphya001@odie.physik2.uni-rostock.de> Cc: questions@freefall.cdrom.com Subject: NFS stats (was: Re: ANNOUNCING: xperfmon++ for FreeBSD-2.X) Message-ID: <9503171900.AA23275@halloran-eldar.lcs.mit.edu> In-Reply-To: <199503170809.JAA01097@odie.physik2.uni-rostock.de> References: <markd@grizzly.com> <199503170809.JAA01097@odie.physik2.uni-rostock.de>
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<<On Fri, 17 Mar 1995 09:09:37 +0100, Lars Koeller <uphya001@odie.physik2.uni-rostock.de> said:
> Hello!
> |> On FreeBSD 2.0, I don't have NFS configured into the kernel, so I get the
> |> error:
> |> vmstat: undefined symbols: _nfsstats
> Thanks, I try to fix it.
For recent versions of FreeBSD, the correct way to get NFS statistics
is to read the fs.nfs group statistics MIB variable, as the `nfsstats'
program does.
/*
* Read the nfs stats using sysctl(3) for live kernels, or kvm_read
* for dead ones.
*/
void
readstats(struct nfsstats *stp)
{
if(deadkernel) {
if(kvm_read(kd, (u_long)nl[N_NFSSTAT].n_value, stp,
sizeof *stp) < 0) {
err(1, "kvm_read");
}
} else {
int name[3];
size_t buflen = sizeof *stp;
name[0] = CTL_FS;
name[1] = MOUNT_NFS;
name[2] = NFS_NFSSTATS;
if(sysctl(name, 3, stp, &buflen, (void *)0, (size_t)0) < 0) {
err(1, "sysctl");
}
}
}
-GAWollman
--
Garrett A. Wollman | Shashish is simple, it's discreet, it's brief. ...
wollman@lcs.mit.edu | Shashish is the bonding of hearts in spite of distance.
Opinions not those of| It is a bond more powerful than absence. We like people
MIT, LCS, ANA, or NSA| who like Shashish. - Claude McKenzie + Florent Vollant
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