Re: port-alpha/35448

["Aaron J. Grier" <agrier%poofygoof.com@localhost>]

The following reply was made to PR port-alpha/35448; it has been noted by GNATS.

From: "Aaron J. Grier" <agrier%poofygoof.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-alpha/35448
Date: Sun, 16 Dec 2012 16:28:08 -0800

 flogging a dead horse here, but figured it was time for an update.
 
 the RETREAT / ADVANCE patch in this PR definitely helped me with stability,
 although this problem itself may be alpha-specific.
 
 the underlying problem (which exacerbated this problem) was traced to a
 duplex mismatch in my network, heavily exercising the NFS retransmit
 code.  :)  it has since been addressed, and the system in question (with
 the patch above) has been running stably under constant low-level use.
 
  4:20PM  up 623 days, 23:26, 14 users, load averages: 0.05, 0.04, 0.00
 
 the only idea I have for flushing out further bugs with the NFS
 retransmit code would be pounding on a UDP mount over a lossy link, IE
 purposely set mismatched duplex, crappy hub or switch, or a packet loss
 simulator.
 
 since this patch does no harm and improves at least alpha, could it be
 applied to current and pulled-up to NetBSD-6?