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List:       novell
Subject:    re:  Network performance woes (Solved)
From:       ITReading () aldridge-borden ! com
Date:       2004-10-29 8:15:37
Message-ID: CHILKAT-MID-15b504af-8f95-4270-a7b1-a84ee6e7bd14 () ASSET-3935
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Thank all of you for your responses.  I took Rob Aronson's advise and backreved to \
the mpk14.psm and the problems went away.  After running for a few weeks now with no \
recurrence of the problem, I believe I can safely say that was it.  Maybe I'll give \
the hyperthreading stuff another shot in the next service pack or maybe I'll just \
leave well enough alone. . . 

Thanks so much Rob!!!



-----------------------------------------------------------
Charles Solomon
System Support Specialist
Aldridge, Borden & Company, P.C.
74 Commerce Street, 36104
PO Box 33, 36101-0033
Montgomery, Alabama
Tel: (334) 420-2854
Fax:(334) 420-2855
www.aldridge-borden.com
email: csolomon@aldridge-borden.com

> > > raronson@perfectnetworks.com 10/02/2004 10:32:16 AM >>>
I had a similar issue and it turned out to be the hyperthreading of a P4
CPU and the APCI architecture. The answer  was to revert back to the
older mpk14.psm files in startup.ncf. 
 

> -----Original Message-----
> From: novell-bounces@netlab1.usu.edu 
> [mailto:novell-bounces@netlab1.usu.edu] On Behalf Of 
> ITReading ITReading
> Sent: Friday, October 01, 2004 4:45 PM
> To: novell@netlab1.usu.edu 
> Subject: Network performance woes
> 
> 
> Hello all,
> A very mysterious, perplexing, and elusive problem has 
> cropped up in the last few weeks. User's will report 
> unbearable "slowness" on several of our network applications. 
> The problem does not affect all users at once.  For example, 
> a user will report poor performance in "application x," but 
> at the same time "application x" will fun fine at another 
> workstation.  Disconnecting and reconnecting network cable 
> usually will resolve the issue (for a little while).  I have 
> tried hard-coding the switch port and NIC (on some 
> _workstations_) to various speeds and duplexes to no avail.  
> I have also replaced the Broadcom Gigabit NIC's on the server 
> with an Intel Pro 1000 to no avail.  I have not tried 
> hard-coding speed/duplex on the server, as I cannot obtain 
> gigabit speeds w/o auto-neg.  The server and switch both 
> report that auto-neg results in 1GBs Full duplex.  No changes 
> have been made to the workstations for some time before the 
> problem started (with the exception of the daily onslaught of 
> MS patches).  
> 
> We have recently rebuilt our servers with NW 6.5 SP2, which 
> makes me think maybe something is going on here?  However, it 
> seems reasonable that a server problem would affect all users 
> at once instead of what I'm seeing??  The server never 
> reports anything out of the ordinary (in terms of 
> utilization, disk requests, etc).  It really acts like a 
> Network layer problem b/c disconnecting and reconnect CAT 
> cables seems to help it.  
> 
> I know I am asking a really broad and loaded question here, 
> but can anyone brainstorm aloud about possibilities?  
> I have not employed a packet sniffer, as I wouldn't really 
> know what I was looking at, but I can start reading, if need 
> be. --------Environment Info------------------- Applications 
> exhibiting the problem: Various apps that use file access:  
> Creative Solution Accounting; UltraTax; Peachtree, etc.
> 
> ServerA: (this server hosts the applications that are having 
> the problem) Dell Poweredge 6650 Perc3 with 5 drives in RAID 
> 5 Config Intel Pro 1000 Server NIC (Auto-neg 1000 FD) 
> (Broadcom NetExtreme's disabled - see above) NW 6.5 SP2 
> (fresh install, no post SP2 patches or hotfixes) e-DIR master 
> replica Xntpd querying three external internet sources
> Duties:  Serves files (+- 50 users); DHCP server; DNS server; 
> NDPS Manager & Broker; Runs backup app (novanet 9)
> 
> ServerB:
> Dell Poweredge 2400
> Perc2 with a RAID 5 and a RAID 1 array
> Intel Pro 1000 Server NIC (Auto-neg 1000 FD)
> NW 6.5 SP2 (fresh install, no post SP2 patches or hotfixes) 
> e-DIR R/W replica Xntpd querying Server A
> Duties:  DNS server; GroupWise 6.0.2 (MTA, POA, & GWIA) (+- 
> 50 users); Accpac Faxserve 7.05
> 
> Workstations:
> Dell Latitude D800's w/ Broadcom NetExtreme Gigabit NIC's & 
> Dell Optiplex GX270's with Intel Pro 1000 NIC's Windows XP 
> Professional SP1 Fully patched (no SP2) Client 32 4.83 SP2
> 
> Infrastructure:
> Dell Powerconnect 5224 & 5212 Gigabit switches (latest firmware)
> +- 60 nodes
> Gigabit speeds from servers all the way to the workstations
> 
> Thanks guys and gals!

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