Date: Thu, 20 Jul 1995 00:08:07 +1000 From: Bruce Evans <bde@zeta.org.au> To: bde@zeta.org.au, phk@freefall.cdrom.com Cc: current@freebsd.org, dfr@render.com, esser@ZPR.Uni-Koeln.DE Subject: Re: slow nfsv3 writes Message-ID: <199507191408.AAA23267@godzilla.zeta.org.au>
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>> I was getting 9K/sec for writes before I complained and this change >> was made :-). >How about running a snoop and get some per-packet times ? `iozone 1 8192' on a 486DX2/66 over lo0 reports reading at 1775129 bytes/sec and writing at 111227 bytes/sec. tcpdump reports about 4ms for reading 8292 bytes and about 70ms for writing 8320 bytes. The problem was that this is actually for nfsv2. For some reason I thought that nfsv3 would be the default. Under nfsv3, `iozone 4 8192' reports ... oops it hangs on netio and other processes hang on nfsrcvlk and after a little while other processes hang on ufslk2 ... This is probably the same problem that Doug saw. Bruce
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