Date: Tue, 30 Apr 2013 08:29:20 -0400 (EDT) From: Rick Macklem <rmacklem@uoguelph.ca> To: "Marc G. Fournier" <scrappy@hub.org> Cc: freebsd-fs@freebsd.org Subject: Re: Initial NFS Test: Linux vs FreeBSD (769% slower) Message-ID: <311431419.1611.1367324960508.JavaMail.root@erie.cs.uoguelph.ca> In-Reply-To: <1175A4B1-414B-44FA-8E20-FA096FA44C4C@hub.org>
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Marc G. Fournier wrote: > If you want, you can email me startup.pcap as an attachment and I'll > take > a look, but wireshark is pretty good at spotting TCP retransmits, etc. > > > 'k, at 4.x Gig in size, doubt your mail server will handle me sending > this to you :) Even compressed, it was going over 400M … I can if you > want it though … > > > Baring that, if you want to give me pointers as to what I should be > looking for? I have Wireshark installed / and the startup.pcap data > loaded … the only thing that is jumping out at me is a bunch of lines > where 'Length' is 32982 while most are 218 … highlighted in 'black > background, red font' … for example: > The big one is a write RPC and it will be a little more than 32768, if you've set wsize=32768. This can't be a capture for the "nfsstat" numbers you emailed the last time. (For one thing, that one didn't have any write RPCs counted.) Try and get a capture for the case where there are few NFS RPCs. (Did you capture for the first time doing the startup after doing a mount vs do an "nfsstat" for a subsequent startup?) Or, is this client doing something else on the network while the startup is happening? I may take a look at it, to see if I can spot anything weird, but a capture when it only does 88 RPCs is going to be much easier to look at. rick > > > > > i am doing a bzip2 compressed file right now, and will make it > available via HTTP, if you are interested … > > > > > > > The only other thing I can suggest is taking the "soft,intr" options > off > your mount and see if that has any effect. Maybe some syscall is > returning > EINTR and confusing jboss? > > > Tried removing soft,intr … no change, still around 240s …
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