Hello. Using SCHED_ULE instead of SCHED_4BSD seems to result in massive performance losses in NFS in conjunction with the Intel "em"-NICs.
We use some Intel P4 based diskless/dataless nodes for numerical calculations over GBit LAN (all machines have Intel PRO/1000 LAN NICs) with "clusterit". On the "master" machine, which is also a P4 system with em-NIC, but SCHED_4BSD scheduler, those massive NFS problems do not occur. I will do some tests to ensure its really the SCHED_ULE option but at this stage I'm sure. I also realised that on SMP machines with Intel 1000/PRO server NICs and SCHED_ULE and ADAPTIVE_MUTEXES enabled the machine gets highly instable (also in 5.1-CURRENT!). On the production systems we use FreeBSD 5.1-RELEASE-p10. Does anybody recognized similar problems? Oliver -- MfG O. Hartmann [EMAIL PROTECTED] ------------------------------------------------------------------ Systemadministration des Institutes fuer Physik der Atmosphaere (IPA) ------------------------------------------------------------------ Johannes Gutenberg Universitaet Mainz Becherweg 21 55099 Mainz Tel: +496131/3924662 (Maschinenraum) Tel: +496131/3924144 (Buero) FAX: +496131/3923532 _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
