SUMMARY: Hi Collision rate using Solaris 2.5.1 & hme

From: gr.smith@napier.ac.uk
Date: Wed Feb 25 1998 - 03:52:58 CST


     Hi All,
     
     Thanks go out to the following for there suggestions.
     
     jim@nga.com
     frode@read-well.no
     steve_pitzenberger@merck.com
     
     The solution to my problem was to install the latest patch 104212-09
     (hme driver patch) from sunsite, collision rate is down to acceptable
     level now.
     
     Apparently the hme driver assumes MAUI is a full duplex device and
     runs it at full duplex mode. This will cause excessive collisions and
     late collisions in any packet transfer test.
     
     Original Question below:
     
     ______________________________ Reply Separator
     _________________________________
     Subject: Slow ultra30 NFS connection
     Author: gr.smith@napier.ac.uk at Internet-Gateway
     Date: 10/02/97 16:50
     
     
     Hi All,
     
     Looking for suggestions to solve the following problem,
     
     I have a Ultra 30 running under 2.5.1 (Hardware 4/97) which is
     connected to our thin ethernet network via the Ultra's MII port, a Sun
     MII to AUI converter (X467A) and a Allied Telesyn MX10 10base2
     Transceiver.
     
     The Network is served by a Sparc2 running SunOs 4.1.1, I have mounted
     users home directories and also software directories from it onto the
     ultra30.
     
     My problem is that the ultra30 is very slow at reading/writing any
     information on the mounted directories, infact it is slower than any
     of our older stations on the same network segment.
     
     Also when I initially run any software contained on the mounted
     directories (Binary Compatibility Mode), they take an age to start if
     even, but on the next try or subsequent tries they start up without
     any problem.
     
     I have noticed that there is a large amount of collisions occuring
     when the Ultra 30 is accessing the mounted directories. Using netstat
     -i on the ultra produced the following
     
     Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
     lo0 8232 loopback localhost 29859 0 29859 0 0 0
     hme0 1500 sol-etherfielding 555806 6922 378071 0 17290 0
     
     My first thought is that it is a problem with NFS3 and NFS2, but I
     have mounted the directory from the sparc2 using nfs ver=2 and also
     proto = udp, also I have noticed that the ultra30 is very slow when
     ftping to it.
     
     My other concern is that possibly the arrangement of using the MII
     connection and the adapter card and transceiver maybe causing the
     problem.
     
     Has anybody come across similar problems, if so any fixes.
     
     Thanks for any help in advance
     
     
     graeme
     
     gr.smith@napier.ac.uk
     
     Unix System Manager

Received: from central.napier.ac.uk (146.176.2.3) by csu_mail1.napier.ac.uk with
SMTP
  (IMA Internet Exchange 2.12 Enterprise) id 00003613; Mon, 9 Feb 98 20:42:20
+0000
Received: from ra.mcs.anl.gov (ra.mcs.anl.gov [140.221.9.21]) by
central.napier.ac.uk (8.6.10/8.6.10) with ESMTP id UAA01743 for
<gr.smith@napier.ac.uk>; Mon, 9 Feb 1998 20:43:22 GMT
Received: from localhost (daemon@localhost) by ra.mcs.anl.gov (8.8.3/8.8.3) with
SMTP id MAA29479; Mon, 9 Feb 1998 12:58:06 -0600 (CST)
Received: by ra.mcs.anl.gov (bulk_mailer v1.5); Mon, 9 Feb 1998 12:56:45 -0600
Received: (from daemon@localhost) by ra.mcs.anl.gov (8.8.3/8.8.3) id LAA29021
for sun-managers-outbound; Mon, 9 Feb 1998 11:29:03 -0600 (CST)
Sender: sun-managers-relay@ra.mcs.anl.gov
Received: (from listserv@localhost) by ra.mcs.anl.gov (8.8.3/8.8.3) id LAA29014
for smmsgs-out; Mon, 9 Feb 1998 11:28:59 -0600 (CST)
Received: from csu_mail1.napier.ac.uk (csu_mail1.napier.ac.uk [146.176.1.33]) by
ra.mcs.anl.gov (8.8.3/8.8.3) with SMTP id LAA29007 for
<sun-managers@ra.mcs.anl.gov>; Mon, 9 Feb 1998 11:27:58 -0600 (CST)
From: gr.smith@napier.ac.uk
Reply-to: gr.smith@napier.ac.uk
Followup-to: gr.smith@napier.ac.uk
Received: from ccMail by csu_mail1.napier.ac.uk
  (IMA Internet Exchange 2.12 Enterprise) id 00003371; Mon, 9 Feb 1998 17:12:30
+0000
Mime-Version: 1.0
Date: Mon, 10 Feb 1997 16:50:16 +0000
Message-ID: <00003371.3207@napier.ac.uk>
Subject: Slow ultra30 NFS connection
To: sun-managers@ra.mcs.anl.gov
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Content-Description: cc:Mail note part
Precedence: bulk



This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:12:31 CDT