> Something's aren't too clear here.
> 1. Is the problem only with these 10 NT servers? I assume you are
> getting
> normal performance from other NT servers, other platforms, etc. but
> not with
> these 10 and only with these 10. Assuming you are getting normal
> response
> from other systems:
> 2. Anything special about these 10? same subnet, same switch, same? vs
> systems
> that are working okay.
> 3. You've checked the routing? On aix ping -R -s 8100 -c 100 hostname
> (Use a larger size ping to try to force a packet loss problem. default
> ping is
> one packet only. Larger ping packets are broken into 1500 sizes and then
> pushed
> across for ethernet just like large backup packets. Suns ping can go up to
> 32000 for a size.).
> Make sure routing is consistent and indicates path is correct. You can
> have
> all sorts of delays by bad routing/router problems. Make sure ping times
> are reasonable.
> I've seen problems with memory in a switch which showed up as a packet
> loss
> but only with larger size pings.
> 4, I would sniff the packets to see if it indicates where the delay might
> be.
> Good luck .
> Cal Fujinaga
>
> -----Original Message-----
> From: Gent, Chad E. [SMTP:CEGent AT LMUS.LEGGMASON DOT COM]
> Sent: Wed, November 07, 2001 10:17 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: NT Performance Problem with Tivoli Client 3.7.x
>
> O.k
>
> Over the last few days I was able to test the throughput from a couple
> different servers experiencing this problem. Here is what I have found.
>
> I have verified that that ports my servers are connected to (on the
> backbone) are 100/meg Full Duplex. Also the server NIC card is set to
> 100/meg Full Duplex. So we can rule out Duplex mis-match errors between
> the
> NIC and the Switch.
>
> I used FTP to transfer several 1 GIG files to my AIX backup machine and I
> am
> still getting the same performance. I have preformed this task on several
> machines and found that my throughput is that same as the backups. At most
> I
> am getting 700kb/sec. I also transferred files to a GIG E card and a
> 100/meg
> Full Duplex card in the AIX backup server. Still the same result. Not
> much
> changed in speed. Any other suggestions on what could be going on here.
>
> I am not giving up:)
>
> Chad
>
> -----Original Message-----
> From: PINNI, BALANAND (SBCSI) [mailto:bp3965 AT SBC DOT COM]
> Sent: Tuesday, November 06, 2001 4:36 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: NT Performance Problem with Tivoli Client 3.7.x
>
>
> Jeff
> Is ur network NIC using autoneg mode.Keep it to 100 full duplex.(I mean in
> configuration).Not NIC specification wise.
> Pl don't increase MTU Size.Else Cisco will break down them into smaller
> components before transmission.This is not good.
> Also see that u have applied patches to TSM Client s/w and
> there are no memory leaks.
> Balanand
>
> -----Original Message-----
> From: Johnn D. Tan [mailto:jdtan AT MED.CORNELL DOT EDU]
> Sent: Tuesday, November 06, 2001 3:02 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: NT Performance Problem with Tivoli Client 3.7.x
>
>
> I agree with Jeff -- if your clients are setup for 100 FD, you need to
> make sure the ports they are connected to on the switch are also 100 FD.
>
> johnn
>
> On Tuesday, November 6, 2001, at 09:24 AM, Jeff Bach wrote:
>
> > Even a 100 Base T can handle 10 clients at better than 1 Meg per second.
> > The rate below is 163 KB/sec.
> >
> > I would suspect alignment issues. Check the switch/hub for alignment
> > errors. Make sure all switch ports are also hard-coded to 100FD.
> >
> > Go back to the basics. Check FTP throughput. Narrow it to a network
> > issue
> > and trouble shoot it as one.
> >
> > MTU size when I checked is limited to 1500 on Cisco equipment. Not
> > sure if
> > this has changed recently, but if the switch has to break things down,
> > there
> > isn't any gain in changing it (I would suspect).
> >
> > As a network issue, try a different type network card, reinstall the
> > driver,
> > check NT tuning parameters. I have seen all of these cause issues.
> >
> > Jeff Bach
> > Home Office Open Systems Engineering
> > Wal-Mart Stores, Inc.
> >
> > WAL-MART CONFIDENTIAL
> >
> >
> > -----Original Message-----
> > From: <James> <healy> [SMTP:James.Healy2 AT AXACS DOT COM]
> > Sent: Monday, November 05, 2001 8:19 AM
> > To: ADSM-L AT VM.MARIST DOT EDU
> > Subject: Re: NT Performance Problem with Tivoli Client
> > 3.7.x
> >
> > Chad,
> > Are you sure that your backup is going across the GIG e
> > network?
> >
> >
> >
> >
> > "Gent, Chad E." <CEGent AT LMUS.LEGGMASON DOT COM>@VM.MARIST.EDU> on
> > 11/05/2001
> > 07:29:03 AM
> >
> > Please respond to "ADSM: Dist Stor Manager" <ADSM-
> > L AT VM.MARIST DOT EDU>
> >
> > Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
> >
> >
> > To: ADSM-L AT VM.MARIST DOT EDU
> > cc:
> >
> > Subject: Re: NT Performance Problem with Tivoli Client 3.7.x
> >
> >
> > Hey Guys,
> >
> > Thanks for the help. I add the following changes to my dsm.opt
> > file.
> >
> > LARGECOMmbuffers Yes
> > TCPBuffsize 31
> > TCPNodelay Yes
> > TCPWindowsize 63
> >
> > Still not much of a change. Does any one have any other
> > Ideas. I
> > have
> > attached some information from dsmsched.log info to this post.
> > This
> > will
> > show you the network transfer rate. I guess I could just put a
> > sniffer on
> > this box and see what its doing. But the main point is I have
> > 10
> > servers
> > just like this one. Is there any settings I check on the AIX
> > box?
> >
> > 11/05/2001 03:40:55 --- SCHEDULEREC STATUS BEGIN
> > 11/05/2001 03:40:55 Total number of objects inspected: 659,189
> > 11/05/2001 03:40:55 Total number of objects backed up: 156
> > 11/05/2001 03:40:55 Total number of objects updated: 0
> > 11/05/2001 03:40:55 Total number of objects rebound: 0
> > 11/05/2001 03:40:55 Total number of objects deleted: 0
> > 11/05/2001 03:40:55 Total number of objects expired: 4
> > 11/05/2001 03:40:55 Total number of objects failed: 1
> > 11/05/2001 03:40:55 Total number of bytes transferred: 3.24
> > GB
> > 11/05/2001 03:40:55 Data transfer time:
> > 20,832.29 sec
> > 11/05/2001 03:40:55 Network data transfer rate: 163.10
> > KB/sec
> > 11/05/2001 03:40:55 Aggregate data transfer rate: 101.13
> > KB/sec
> > 11/05/2001 03:40:55 Objects compressed by: 0%
> > 11/05/2001 03:40:55 Elapsed processing time: 09:19:54
> > 11/05/2001 03:40:55 --- SCHEDULEREC STATUS END
> > 11/05/2001 03:40:55 --- SCHEDULEREC OBJECT END NTSERVERS
> > 11/04/2001
> > 18:00:00
> > 11/05/2001 03:40:55 Scheduled event 'NTSERVERS' completed
> > successfully.
> > 11/05/2001 03:40:56 Sending results for scheduled event
> > 'NTSERVERS'.
> > 11/05/2001 03:41:00 Results sent to server for scheduled event
> > 'NTSERVERS'.
> >
> > 11/05/2001 03:41:00 Querying server for next scheduled event.
> > 11/05/2001 03:41:00 Node Name: MDCAL3
> > 11/05/2001 03:41:00 Session established with server ADSM:
> > AIX-RS/6000
> > 11/05/2001 03:41:00 Server Version 3, Release 7, Level 4.0
> > 11/05/2001 03:41:00 Server date/time: 11/05/2001 03:45:11
> > Last
> > access:
> > 11/04/2001 18:25:11
> >
> > Thanks In Advance
> >
> > Chad Gent
> > Legg Mason Network/Server Support
> > cegent AT leggmason DOT com
> >
> >
> >
> > -----Original Message-----
> > From: Joshua S. Bassi [mailto:jbassi AT IHWY DOT COM]
> > Sent: Thursday, November 01, 2001 5:00 PM
> > To: ADSM-L AT VM.MARIST DOT EDU
> > Subject: Re: NT Performance Problem with Tivoli Client 3.7.x
> >
> >
> > Actually on NT 4.0 make this line read:
> >
> > TCPWindowsize 63
> >
> >
> > -----Original Message-----
> > From: Gent, Chad E. [mailto:CEGent AT LMUS.LEGGMASON DOT COM]
> > Sent: Thursday, November 01, 2001 2:49 PM
> > To: ADSM-L AT VM.MARIST DOT EDU
> > Subject: NT Performance Problem with Tivoli Client 3.7.x
> >
> >
> > Hello,
> >
> > I have 10 NT 4.0 clients backing up to a AIX TSM Server running
> > version
> > 3.7.2.4. These NT clients are configured to backup to a GIG E
> > card
> > in
> > the
> > AIX server (should be plenty fast enough). Each client is
> > setup for
> > 100
> > mb
> > Full duplex on their network card. No auto-negotiate. My
> > clients
> > are
> > getting very poor network performance. Lets take one clients
> > unparticular.
> > It backs up about 15 GB a night but only gets a Aggregate
> > Transfer
> > Rate
> > of
> > 50.25 KB/second. The Network Transfer rate is about 4,000
> > KB/second.
> > Is
> > there anyway for me to get a higher Aggregate rate? I need
> > these
> > machines
> > to backup faster. Can I tweak MTU setting or something for
> > NT? Any
> > help is
> > greatly appreciated. Below is my option file from 1 of my
> > clients.
> >
> > Chad Gent
> > Legg Mason Network/Server Support
> > cegent AT leggmason DOT com
> >
> > NODENAME MDCAL3
> > TCPSERVERADDRESS aixbackup_g.leggmason.com
> > Resourceutilization 1
> > Exclude "*:\...\ea data. sf"
> > Exclude "*:\...\pagefile.sys"
> > Exclude "*:\...\ibmbio.com"
> > Exclude "*:\ibmdos.com"
> > Exclude "*:\msdos.sys"
> > Exclude "*:io.sys"
> > Exclude "*:\...\system32\config\*.*"
> > Exclude "*:\...\system32\config\...\*"
> > Exclude.dir "C:\winnt\profiles"
> > backupregistry yes
> > PASSWORDACCESS GENERATE
> > DOMAIN ALL-LOCAL
> >
> >
> > **********************************************************************
> > This email and any files transmitted with it are confidential
> > and intended solely for the individual or entity to
> > whom they are addressed. If you have received this email
> > in error destroy it immediately.
> > **********************************************************************
> >
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