Date: Sun, 16 Nov 2003 20:55:54 +0100 From: Wilko Bulte <wkb@freebie.xs4all.nl> To: Jeff Roberson <jroberson@chesapeake.net> Cc: Kris Kennaway <kris@obsecurity.org> Subject: Re: New alpha 5.x bug Message-ID: <20031116195554.GA27327@freebie.xs4all.nl> In-Reply-To: <20031112180414.S10222-100000@mail.chesapeake.net> References: <20031112175839.F10222-100000@mail.chesapeake.net> <20031112180414.S10222-100000@mail.chesapeake.net>
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On Wed, Nov 12, 2003 at 06:05:12PM -0500, Jeff Roberson wrote: > > On Wed, 12 Nov 2003, Jeff Roberson wrote: > > > > > On Wed, 12 Nov 2003, David O'Brien wrote: > > > > > On Tue, Nov 11, 2003 at 07:42:19PM -0500, Jeff Roberson wrote: > > > > I wrote some code last night to write a predictable pattern of bytes on > > > > one side of a pipe and read it back in on another. I ran several sets of > > > > these programs over night, one doing 16byte transfers, another doing > > > > 16384, and another doing 100,000,000 bytes in 2xPAGE_SIZE chunks. > > > > > > Can you post the test code? Maybe Kris could run it on the Alpha custer > > > during some builds also. > > > > > > > http://www.chesapeake.net/~jroberson/reader.c && writer.c > > > > I use ./writer | ./reader > > > > You can specify a size, such as: ./writer 16384 | ./reader 16384 > > > > The sizes must match. They will read and write at most 32k at a time, > > using multiple passes for larger sizes. > > > > I forgot to mention, I'm doing this over nfs to a disk on a second alpha > system as well. This should catch any disk or nfs related corruption. > I'm also doing buildworlds on both machines. I've been running the writer/reader combo for ~3 days, while at the same time running buildworlds over NFS etc. Nothing wrong that I could reproduce. Using DS10 with it's builtin dc(4) ethernet. -- | / o / /_ _ |/|/ / / /( (_) Bulte wilko@FreeBSD.org
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