Date: Tue, 04 May 2010 16:01:00 +0800 (CST) From: "Cheng-Lin Yang" <yuwen@exodus.cs.ccu.edu.tw> To: "freebsd-fs" <freebsd-fs@freebsd.org> Cc: lab <lab@cs.ccu.edu.tw> Subject: Struggling on NFS problem Message-ID: <1272960060.34062.yuwen@exodus.cs.ccu.edu.tw>
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Dear=20all, Currently,=20we=20have=20a=20NFS=20server=20which=20runs=20FreeBSD8=20with=20= ZFS=20and=20few=20workstations=20as=20NFS=20client=20(2=20*=20FreeBSD8=20amd= 64=20+=201=20*=20FreeBSD7.2=20i386=20+=202=20*=20Fedora=20+=20Debian).=20We=20= spotted=20that=20NFS=20performs=20weirdly=20on=20FreeBSD=20clients,=20which=20= will=20significantly=20slow=20down=20the=20system=20response.=20The=20only=20= solution=20to=20it=20is=20to=20reboot=20the=20clients=20(Linux=20client=20ru= ns=20smoothly).=20So=20we=20try=20to=20use=20"nfsstat=20-c"=20on=20FreeBSD=20= client=20to=20dig=20into=20the=20problem=20and=20found=20strange=20result=20= (http://pastebin.com/K71qpEDG)=20: csie0[~]#=20nfsstat=20-c Client=20Info: Rpc=20Counts: =20=20Getattr=20=20=20Setattr=20=20=20=20Lookup=20=20Readlink=20=20=20=20=20= =20Read=20=20=20=20=20Write=20=20=20=20Create=20=20=20=20Remove =20=203595047=20=20=20=20=2075100=20=20=201089213=20=20=20=20=20=201095=20=20= =201258311=20=2048664374=20=20=20=20104346=20=20=20=20116376 =20=20=20Rename=20=20=20=20=20=20Link=20=20=20Symlink=20=20=20=20=20Mkdir=20= =20=20=20=20Rmdir=20=20=20Readdir=20=20RdirPlus=20=20=20=20Access =20=20=20=2017621=20=20=20=20=20=201644=20=20=20=20=20=20=20=2077=20=20=20=20= =2019569=20=20=20=20=20=209459=20=20=20=20=2045177=20=20=20=20=20=20=20=20=20= 0=20=20=20=20323665 =20=20=20=20Mknod=20=20=20=20Fsstat=20=20=20=20Fsinfo=20=20PathConf=20=20=20= =20Commit =20=20=20=20=20=20=20=200=20=20=20=20111262=20=20=20=20=20=20=20=20=203=20=20= =20=20=20=20=20=20=200=20=20=20=20590876 Rpc=20Info: =20TimedOut=20=20=20Invalid=20X=20Replies=20=20=20Retries=20=20Requests =20=20=20=20=20=20=20=200=20=20=20=20=20=20=20=20=200=20=20=20=20=20=20=20=20= =200=20=20=20=20=20=20=20=20=200=20=2056022746 Cache=20Info: Attr=20Hits=20=20=20=20Misses=20Lkup=20Hits=20=20=20=20Misses=20BioR=20Hits=20= =20=20=20Misses=20BioW=20Hits=20=20=20=20Misses 198414412=20=20=203595052=20112100649=20=20=201088903=20=2062793893=20=20=20= 1253320=20=20-1008715=20=2048664379 BioRLHits=20=20=20=20Misses=20BioD=20Hits=20=20=20=20Misses=20DirE=20Hits=20= =20=20=20Misses =20=20=20=20=203751=20=20=20=20=20=201095=20=20=20=20204326=20=20=20=20=2045= 191=20=20=20=20109194=20=20=20=20=20=20=20=20=208 As=20you=20can=20see,=20the=20value=20of=20"BioW=20Hits"=20is=20a=20negative= =20number.=20Shouldn't=20it=20be=20equal=20or=20larger=20than=20zero?=20We=20= have=20totally=20no=20idea=20on=20this=20issue.=20Please=20kindly=20help=20u= s=20on=20investigating=20the=20problem.=20Any=20suggestion=20is=20extremely=20= welcomed.=20Thank=20you. Regards, George
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