Date: Tue, 26 Mar 2002 10:20:03 -0800 (PST) From: Alexander Haderer <alexander.haderer@charite.de> To: freebsd-bugs@FreeBSD.org Subject: Re: misc/35151: High NFSD load in FreeBSD 4.5R Message-ID: <200203261820.g2QIK3E32691@freefall.freebsd.org>
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The following reply was made to PR misc/35151; it has been noted by GNATS. From: Alexander Haderer <alexander.haderer@charite.de> To: freebsd-gnats-submit@FreeBSD.org, anderson@centtech.com Cc: dirk.emmel@charite.de Subject: Re: misc/35151: High NFSD load in FreeBSD 4.5R Date: Tue, 26 Mar 2002 19:14:05 +0100 hello, we had the same problem with 4.5R. The NFS server exports a 450 GB vinum=20 RAID to other clients which usually do write access via NFS (read access is= =20 local). When the filesystem has become more and more full (70% ...) one or= =20 more nfsd's eat up the CPU when writing to the NFS server: After NFS=20 writing of some megabytes (dirs, hundreds of files) via NFS, top shows nfsd= =20 with >100% WCPU, system above 70% and a load average > 10 with very slow=20 reactions of the machine (obviously). The usual load is somewhere between=20 0.1 .. 2.0 resulting from some httpds. The high load went back to acceptable values when we disabled the=20 softupdates for the exported filesystem: tunefs -n disable /dev/vinum/raid. If this is a bug or a feature: I don't know. Alexander --=20 Alexander Haderer Charit=E9 Berlin - Germany To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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