amd64/92412: rcp.rstatd reports bogus packets/per/second info
hotlips Internet admin
hostmaster at GTS.NET
Fri Jan 27 14:10:09 PST 2006
The following reply was made to PR amd64/92412; it has been noted by GNATS.
From: hotlips Internet admin <hostmaster at GTS.NET>
To: kris at obsecurity.org (Kris Kennaway)
Cc: bug-followup at FreeBSD.org
Subject: Re: amd64/92412: rcp.rstatd reports bogus packets/per/second info
Date: Fri, 27 Jan 2006 17:02:33 -0500 (EST)
Thus saith Kris Kennaway:
| On Fri, Jan 27, 2006 at 11:59:15AM -0500, hotlips Internet admin wrote:
| > | > >
| > | > >Description:
| > | > packets/second value reported by rpc.rstatd to remote monitor hovers around
| > | > 8000 or so with odd downward spikes approx every 90 seconds (it's not at all related to actual interface traffic)
| > | >
| > | > >How-To-Repeat:
| > | > keep displaying rpc.rstatd data from 6.0 system
| > |
| > | How are you using rpc.rstatd and rup? I don't see a way to make rup
| > | display "packets/second", it only gives uptime and load average:
| > |
| > | # rup
| > | fbsd-amd64.isc. 10:02am up 4 days, 14:00, load average: 2.00 2.00 2.00
| > Solaris perfmeter, actually.
| Do you know how I can query this on FreeBSD?
It's easy to do on any BSD system - in /usr/src/usr.bin/rup,
make a copy rupx.c with this diff:
*** rup.c Sat May 21 05:55:07 2005
--- rupx.c Fri Jan 27 16:17:25 2006
*** 153,158 ****
--- 153,159 ----
+ printf("ipackets: %d opackets %d\n", host_stat->if_ipackets, host_stat->if_opackets);
All other FreeBSD systems seem to return 0 for if_opackets
(which is wrong), whereas 6.0 returns junk. NetBSD, Solaris,
SunOS 4.x, & Irix 6.x all seem to do the right thing.
I also note that the RPC/XDR code seems to be quite ancient -
even SunOS 4.1.1 1990 code has declarations for an additional
version 4 of the rstats protocol: RSTATVERS_VAR, with variable
args for RSTAT_CPUSTATES & RSTAT_DK_NDRIVE. All the code
appears to have version 3 (RSTATVERS_TIME), which rup uses.
Bruce Becker +1 416 410 0879
GTS Network Administration Toronto, Ont.
Email: hostmaster at gts.net
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