Date: Thu, 28 Oct 2010 20:18:26 +0000 (UTC) From: Ulrich Spoerlein <uqs@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/usr.sbin/bsnmpd/modules/snmp_hostres hostres_processor_tbl.c Message-ID: <201010282018.o9SKIdXM006889@repoman.freebsd.org>
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uqs 2010-10-28 20:18:26 UTC FreeBSD src repository Modified files: usr.sbin/bsnmpd/modules/snmp_hostres hostres_processor_tbl.c Log: SVN rev 214489 on 2010-10-28 20:18:26Z by uqs Fix CPU load reporting independent of scheduler used. - Sample CPU usage data from kern.cp_times, this makes for a far more accurate and scheduler independent algorithm. - Rip out the process list scraping that is no longer required. - Don't update CPU usage sampling on every request, but every 15s instead. This makes it impossible for an attacker to hide the CPU load by triggering 4 samplings in short succession when the system is idle. - After reaching the steady-state, the system will always report the average CPU load of the last 60 sampled seconds. - Untangling of call graph. PR: kern/130222 Tested by: Julian Dunn <jdunn@aquezada.com> Gustau Pérez <gperez@entel.upc.edu> Jürgen Weiß <weiss@uni-mainz.de> MFC after: 2 weeks I'm unsure if some MIB standard states this must be the load average for, eg. 300s, it looks like net-snmp isn't even bothering to implement the CPU load reporting at all. Revision Changes Path 1.7 +129 -205 src/usr.sbin/bsnmpd/modules/snmp_hostres/hostres_processor_tbl.c
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