Re: Network tuning question -- AIX to AIX
Hi, We get around 65MB/s. The backups to TSM is not optimized as yet. Very are busy implementing a very big SAP landscape at the moment, so some of my node backups are running in parallel to TSM. Regards, Jacques van den Berg TSM / SAP Storage Administrator Pick 'n Pay IT Email : [EMAIL PROTECTED] Tel : 021 - 658 1711 Fax : 021 - 658 1699 Mobile : 082 - 653 8164 Dis altyd lente in die hart van die mens wat God en sy medemens liefhet (John Vianney). -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Hans-Dieter Kutz Sent: Wednesday, July 19, 2006 2:35 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Network tuning question -- AIX to AIX On Tue, Jul 18, 2006 at 03:07:06PM +0200, Jacques Van Den Berg wrote: Hi, I assume you are using TSM AIX. We have applied the following settings on AIX for our GIGABIT ETHERS. original settings: sb_max = 1048576 udp_recvspace = 42080 udp_sendspace = 9216 tcp_recvspace = 16384 tcp_sendspace = 16384 The following settings has been applied: no -o sb_max=2097152 no -r -o sb_max=2097152 no -o udp_sendspace=65536 no -r -o udp_sendspace=65536 no -o udp_recvspace=65536 no -r -o udp_recvspace=65536 no -o tcp_recvspace=262144 no -r -o tcp_recvspace=262144 no -o tcp_sendspace=262144 no -r -o tcp_sendspace=262144 Hello Jacques! With the following settings we are getting around 45 Mb/s through the network to our TSM-Server (AIX to AIX) with no Channel: snip # no -a|grep rec tcp_recvspace = 16384 udp_recvspace = 42080 # no -a|grep send tcp_sendspace = 16384 udp_sendspace = 9216 # no -a|grep sb sb_max = 8738140 # lsattr -El en1 alias4 IPv4 Alias including Subnet Mask True alias6 IPv6 Alias including Prefix Length True arp onAddress Resolution Protocol (ARP) True authority Authorized Users True mtu 1500 Maximum IP Packet Size for This Device True netmask 255.255.255.0 Subnet MaskTrue remmtu576 Maximum IP Packet Size for REMOTE Networks True rfc1323 1 Enable/Disable TCP RFC 1323 Window Scaling True tcp_nodelay 1 Enable/Disable TCP_NODELAY Option True tcp_recvspace 873814Set Socket Buffer Space for Receiving True tcp_sendspace 873814Set Socket Buffer Space for SendingTrue # nmon output client --Network-Statistics I/F Name Recv=KB/s Trans=KB/s packin packout insize outsize Peak-Recv Trans en1 178.6 46233.43505.2 32296.552.2 1465.925395.7 50720.6 snip What are your highest thruputs? Cheers, ku -- Princess Leia: Aren't you a little short for a stormtrooper? _ Dieses Mail/Fax ist ausschließlich für den genannten Empfänger bestimmt. Es enthält persönliche oder vertrauliche Informationen. Jede unerlaubte Verbreitung des Inhalts, auch teilweise, ist untersagt. Falls Sie dieses Mail/Fax versehentlich erhielten, informieren Sie bitte unverzüglich den Absender und löschen Sie dieses Mail/Fax endgültig von jedem Rechner, auch Ihrem Mail-/Faxserver. This mail/fax contains private or confidential information and is intended only for the person to which it is addressed. Any unauthorized dissemination, even partly, is prohibited. If you received this mail/fax in error, please contact the sender and delete this mail/fax finally from any computer, including your mail-/faxserver. Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED] Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED]
Re: Network tuning question -- AIX to AIX
On Tue, Jul 18, 2006 at 03:07:06PM +0200, Jacques Van Den Berg wrote: Hi, I assume you are using TSM AIX. We have applied the following settings on AIX for our GIGABIT ETHERS. original settings: sb_max = 1048576 udp_recvspace = 42080 udp_sendspace = 9216 tcp_recvspace = 16384 tcp_sendspace = 16384 The following settings has been applied: no -o sb_max=2097152 no -r -o sb_max=2097152 no -o udp_sendspace=65536 no -r -o udp_sendspace=65536 no -o udp_recvspace=65536 no -r -o udp_recvspace=65536 no -o tcp_recvspace=262144 no -r -o tcp_recvspace=262144 no -o tcp_sendspace=262144 no -r -o tcp_sendspace=262144 Hello Jacques! With the following settings we are getting around 45 Mb/s through the network to our TSM-Server (AIX to AIX) with no Channel: snip # no -a|grep rec tcp_recvspace = 16384 udp_recvspace = 42080 # no -a|grep send tcp_sendspace = 16384 udp_sendspace = 9216 # no -a|grep sb sb_max = 8738140 # lsattr -El en1 alias4 IPv4 Alias including Subnet Mask True alias6 IPv6 Alias including Prefix Length True arp onAddress Resolution Protocol (ARP) True authority Authorized Users True mtu 1500 Maximum IP Packet Size for This Device True netmask 255.255.255.0 Subnet MaskTrue remmtu576 Maximum IP Packet Size for REMOTE Networks True rfc1323 1 Enable/Disable TCP RFC 1323 Window Scaling True tcp_nodelay 1 Enable/Disable TCP_NODELAY Option True tcp_recvspace 873814Set Socket Buffer Space for Receiving True tcp_sendspace 873814Set Socket Buffer Space for SendingTrue # nmon output client --Network-Statistics I/F Name Recv=KB/s Trans=KB/s packin packout insize outsize Peak-Recv Trans en1 178.6 46233.43505.2 32296.552.2 1465.925395.7 50720.6 snip What are your highest thruputs? Cheers, ku -- Princess Leia: Aren't you a little short for a stormtrooper? _ Dieses Mail/Fax ist ausschließlich für den genannten Empfänger bestimmt. Es enthält persönliche oder vertrauliche Informationen. Jede unerlaubte Verbreitung des Inhalts, auch teilweise, ist untersagt. Falls Sie dieses Mail/Fax versehentlich erhielten, informieren Sie bitte unverzüglich den Absender und löschen Sie dieses Mail/Fax endgültig von jedem Rechner, auch Ihrem Mail-/Faxserver. This mail/fax contains private or confidential information and is intended only for the person to which it is addressed. Any unauthorized dissemination, even partly, is prohibited. If you received this mail/fax in error, please contact the sender and delete this mail/fax finally from any computer, including your mail-/faxserver.
Re: Network tuning question -- AIX to AIX
Hi, I assume you are using TSM AIX. We have applied the following settings on AIX for our GIGABIT ETHERS. original settings: sb_max = 1048576 udp_recvspace = 42080 udp_sendspace = 9216 tcp_recvspace = 16384 tcp_sendspace = 16384 The following settings has been applied: no -o sb_max=2097152 no -r -o sb_max=2097152 no -o udp_sendspace=65536 no -r -o udp_sendspace=65536 no -o udp_recvspace=65536 no -r -o udp_recvspace=65536 no -o tcp_recvspace=262144 no -r -o tcp_recvspace=262144 no -o tcp_sendspace=262144 no -r -o tcp_sendspace=262144 I was looking at setting up Etherchannel in our environment. Do you recon it is not worth doing it? What issue did you experience? Regards, Jacques van den Berg TSM / SAP Storage Administrator Pick 'n Pay IT Email : [EMAIL PROTECTED] Tel : 021 - 658 1711 Fax : 021 - 658 1699 Mobile : 082 - 653 8164 Dis altyd lente in die hart van die mens wat God en sy medemens liefhet (John Vianney). -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Kauffman, Tom Sent: Monday, July 17, 2006 3:59 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Network tuning question -- AIX to AIX We finally figured out that ehterchannel was not doing what we wanted last week, so we re-configured our gigabit ethernet adapters as individual adapters on six separate internal networks. Now I've run into another interesting observation. I can fire up one interface from a client system to my TSM server with the ftp process coverd in the tuning doc (from /dev/zero to /dev/null) and get 110 MB per second over the interface. If I then fire up the second interface on the same client to the TSM server -- I get 110 MB/sec as an aggregate; both interfaces run at 55 to 58 MB/sec. This is not a TSM server constraint; I can get all six interfaces running at 110 MB/sec if I run one process on each of six clients. So it's a client tuning issue -- and not a problem with input from /dev/zero, as these results mirror my TDP/R3 backups this weekend. Any suggestions on what knobs to tweak? Better yet, any suggestions on how to determine what resource constraint I'm hitting? I'm beating my way through the various redbooks that cover network tuning, but this can be time-consuming. TIA Tom Kauffman NIBCO, Inc CONFIDENTIALITY NOTICE: This email and any attachments are for the exclusive and confidential use of the intended recipient. If you are not the intended recipient, please do not read, distribute or take action in reliance upon this message. If you have received this in error, please notify us immediately by return email and promptly delete this message and its attachments from your computer system. We do not waive attorney-client or work product privilege by the transmission of this message. Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED] Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED]
Re: Network tuning question -- AIX to AIX
Those settings look good, but don't you also have to set this value rfc1323 = 1 so you can take advantage of TCP send and receive sizes larger than 64K? Ben -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Jacques Van Den Berg Sent: Tuesday, July 18, 2006 7:07 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: Network tuning question -- AIX to AIX Hi, I assume you are using TSM AIX. We have applied the following settings on AIX for our GIGABIT ETHERS. original settings: sb_max = 1048576 udp_recvspace = 42080 udp_sendspace = 9216 tcp_recvspace = 16384 tcp_sendspace = 16384 The following settings has been applied: no -o sb_max=2097152 no -r -o sb_max=2097152 no -o udp_sendspace=65536 no -r -o udp_sendspace=65536 no -o udp_recvspace=65536 no -r -o udp_recvspace=65536 no -o tcp_recvspace=262144 no -r -o tcp_recvspace=262144 no -o tcp_sendspace=262144 no -r -o tcp_sendspace=262144 I was looking at setting up Etherchannel in our environment. Do you recon it is not worth doing it? What issue did you experience? Regards, Jacques van den Berg TSM / SAP Storage Administrator Pick 'n Pay IT Email : [EMAIL PROTECTED] Tel : 021 - 658 1711 Fax : 021 - 658 1699 Mobile : 082 - 653 8164 Dis altyd lente in die hart van die mens wat God en sy medemens liefhet (John Vianney). -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Kauffman, Tom Sent: Monday, July 17, 2006 3:59 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Network tuning question -- AIX to AIX We finally figured out that ehterchannel was not doing what we wanted last week, so we re-configured our gigabit ethernet adapters as individual adapters on six separate internal networks. Now I've run into another interesting observation. I can fire up one interface from a client system to my TSM server with the ftp process coverd in the tuning doc (from /dev/zero to /dev/null) and get 110 MB per second over the interface. If I then fire up the second interface on the same client to the TSM server -- I get 110 MB/sec as an aggregate; both interfaces run at 55 to 58 MB/sec. This is not a TSM server constraint; I can get all six interfaces running at 110 MB/sec if I run one process on each of six clients. So it's a client tuning issue -- and not a problem with input from /dev/zero, as these results mirror my TDP/R3 backups this weekend. Any suggestions on what knobs to tweak? Better yet, any suggestions on how to determine what resource constraint I'm hitting? I'm beating my way through the various redbooks that cover network tuning, but this can be time-consuming. TIA Tom Kauffman NIBCO, Inc CONFIDENTIALITY NOTICE: This email and any attachments are for the exclusive and confidential use of the intended recipient. If you are not the intended recipient, please do not read, distribute or take action in reliance upon this message. If you have received this in error, please notify us immediately by return email and promptly delete this message and its attachments from your computer system. We do not waive attorney-client or work product privilege by the transmission of this message. Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED] Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED]
Re: Network tuning question -- AIX to AIX
Etherchannel can be a Good Thing (tm) but it doesn't do what I was trying to do. I hadd four adapters on my TSM server bundled as an etherchannel. I also bundled two adapters each on my R3 Database Servers as an etherchannel. Here's the way this worked in a Cisco switch environment: DB server opens session 1 to TSM; AIX decides to usee port 1 of the etherchannel. The switch sees the incoming data and decides that Dbserver1 will use port 1 of the destination etherchannel. So far, so good. Now, DB server opens second session to TSM; AIX uses port 2 of the etherchannel (the other adapter). Still good-to-go. And then the switch steps in -- and says since you are Dbserver1 accessing TSM, you get port 1 (again). So now I have two gigabit cards on my DB server feeding one gigabit card on my TSM server. Not what I'd planned. Note that this is NOT an issue if (A) you're feeding multiple 100 Mb feeds to gigabit adapters, or (B) feeding multiple source systems with one interface each to the TSM server. It only crops up when trying to feed one etherchannel to another. Tom Kauffman NIBCO, Inc -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Ben Bullock Sent: Tuesday, July 18, 2006 10:12 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: Network tuning question -- AIX to AIX Those settings look good, but don't you also have to set this value rfc1323 = 1 so you can take advantage of TCP send and receive sizes larger than 64K? Ben -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Jacques Van Den Berg Sent: Tuesday, July 18, 2006 7:07 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: Network tuning question -- AIX to AIX Hi, I assume you are using TSM AIX. We have applied the following settings on AIX for our GIGABIT ETHERS. original settings: sb_max = 1048576 udp_recvspace = 42080 udp_sendspace = 9216 tcp_recvspace = 16384 tcp_sendspace = 16384 The following settings has been applied: no -o sb_max=2097152 no -r -o sb_max=2097152 no -o udp_sendspace=65536 no -r -o udp_sendspace=65536 no -o udp_recvspace=65536 no -r -o udp_recvspace=65536 no -o tcp_recvspace=262144 no -r -o tcp_recvspace=262144 no -o tcp_sendspace=262144 no -r -o tcp_sendspace=262144 I was looking at setting up Etherchannel in our environment. Do you recon it is not worth doing it? What issue did you experience? Regards, Jacques van den Berg TSM / SAP Storage Administrator Pick 'n Pay IT Email : [EMAIL PROTECTED] Tel : 021 - 658 1711 Fax : 021 - 658 1699 Mobile : 082 - 653 8164 Dis altyd lente in die hart van die mens wat God en sy medemens liefhet (John Vianney). -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Kauffman, Tom Sent: Monday, July 17, 2006 3:59 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Network tuning question -- AIX to AIX We finally figured out that ehterchannel was not doing what we wanted last week, so we re-configured our gigabit ethernet adapters as individual adapters on six separate internal networks. Now I've run into another interesting observation. I can fire up one interface from a client system to my TSM server with the ftp process coverd in the tuning doc (from /dev/zero to /dev/null) and get 110 MB per second over the interface. If I then fire up the second interface on the same client to the TSM server -- I get 110 MB/sec as an aggregate; both interfaces run at 55 to 58 MB/sec. This is not a TSM server constraint; I can get all six interfaces running at 110 MB/sec if I run one process on each of six clients. So it's a client tuning issue -- and not a problem with input from /dev/zero, as these results mirror my TDP/R3 backups this weekend. Any suggestions on what knobs to tweak? Better yet, any suggestions on how to determine what resource constraint I'm hitting? I'm beating my way through the various redbooks that cover network tuning, but this can be time-consuming. TIA Tom Kauffman NIBCO, Inc CONFIDENTIALITY NOTICE: This email and any attachments are for the exclusive and confidential use of the intended recipient. If you are not the intended recipient, please do not read, distribute or take action in reliance upon this message. If you have received this in error, please notify us immediately by return email and promptly delete this message and its attachments from your computer system. We do not waive attorney-client or work product privilege by the transmission of this message. Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED] Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED] CONFIDENTIALITY NOTICE: This email and any attachments
Re: Network tuning question -- AIX to AIX
Re: rfc1323, Yes you right... Setting this to 1 allows you to send big buffers. Jacques van den Berg TSM / SAP Storage Administrator Pick 'n Pay IT Email : [EMAIL PROTECTED] Tel : 021 - 658 1711 Fax : 021 - 658 1699 Mobile : 082 - 653 8164 Dis altyd lente in die hart van die mens wat God en sy medemens liefhet (John Vianney). -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Ben Bullock Sent: Tuesday, July 18, 2006 4:12 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Network tuning question -- AIX to AIX Those settings look good, but don't you also have to set this value rfc1323 = 1 so you can take advantage of TCP send and receive sizes larger than 64K? Ben -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Jacques Van Den Berg Sent: Tuesday, July 18, 2006 7:07 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: Network tuning question -- AIX to AIX Hi, I assume you are using TSM AIX. We have applied the following settings on AIX for our GIGABIT ETHERS. original settings: sb_max = 1048576 udp_recvspace = 42080 udp_sendspace = 9216 tcp_recvspace = 16384 tcp_sendspace = 16384 The following settings has been applied: no -o sb_max=2097152 no -r -o sb_max=2097152 no -o udp_sendspace=65536 no -r -o udp_sendspace=65536 no -o udp_recvspace=65536 no -r -o udp_recvspace=65536 no -o tcp_recvspace=262144 no -r -o tcp_recvspace=262144 no -o tcp_sendspace=262144 no -r -o tcp_sendspace=262144 I was looking at setting up Etherchannel in our environment. Do you recon it is not worth doing it? What issue did you experience? Regards, Jacques van den Berg TSM / SAP Storage Administrator Pick 'n Pay IT Email : [EMAIL PROTECTED] Tel : 021 - 658 1711 Fax : 021 - 658 1699 Mobile : 082 - 653 8164 Dis altyd lente in die hart van die mens wat God en sy medemens liefhet (John Vianney). -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Kauffman, Tom Sent: Monday, July 17, 2006 3:59 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Network tuning question -- AIX to AIX We finally figured out that ehterchannel was not doing what we wanted last week, so we re-configured our gigabit ethernet adapters as individual adapters on six separate internal networks. Now I've run into another interesting observation. I can fire up one interface from a client system to my TSM server with the ftp process coverd in the tuning doc (from /dev/zero to /dev/null) and get 110 MB per second over the interface. If I then fire up the second interface on the same client to the TSM server -- I get 110 MB/sec as an aggregate; both interfaces run at 55 to 58 MB/sec. This is not a TSM server constraint; I can get all six interfaces running at 110 MB/sec if I run one process on each of six clients. So it's a client tuning issue -- and not a problem with input from /dev/zero, as these results mirror my TDP/R3 backups this weekend. Any suggestions on what knobs to tweak? Better yet, any suggestions on how to determine what resource constraint I'm hitting? I'm beating my way through the various redbooks that cover network tuning, but this can be time-consuming. TIA Tom Kauffman NIBCO, Inc CONFIDENTIALITY NOTICE: This email and any attachments are for the exclusive and confidential use of the intended recipient. If you are not the intended recipient, please do not read, distribute or take action in reliance upon this message. If you have received this in error, please notify us immediately by return email and promptly delete this message and its attachments from your computer system. We do not waive attorney-client or work product privilege by the transmission of this message. Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED] Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED] Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED] Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED]
Re: Network tuning question -- AIX to AIX
Re: rfc1323, Yes you right... Setting this to 1 allows you to send big buffers. no -o rfc1323=1#To apply the setting immediately no -r -o rfc1323=1 #To apply the setting after the next reboot. Regards, Jacques van den Berg TSM / SAP Storage Administrator Pick 'n Pay IT Email : [EMAIL PROTECTED] Tel : 021 - 658 1711 Fax : 021 - 658 1699 Mobile : 082 - 653 8164 Dis altyd lente in die hart van die mens wat God en sy medemens liefhet (John Vianney). -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Ben Bullock Sent: Tuesday, July 18, 2006 4:12 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Network tuning question -- AIX to AIX Those settings look good, but don't you also have to set this value rfc1323 = 1 so you can take advantage of TCP send and receive sizes larger than 64K? Ben -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Jacques Van Den Berg Sent: Tuesday, July 18, 2006 7:07 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: Network tuning question -- AIX to AIX Hi, I assume you are using TSM AIX. We have applied the following settings on AIX for our GIGABIT ETHERS. original settings: sb_max = 1048576 udp_recvspace = 42080 udp_sendspace = 9216 tcp_recvspace = 16384 tcp_sendspace = 16384 The following settings has been applied: no -o sb_max=2097152 no -r -o sb_max=2097152 no -o udp_sendspace=65536 no -r -o udp_sendspace=65536 no -o udp_recvspace=65536 no -r -o udp_recvspace=65536 no -o tcp_recvspace=262144 no -r -o tcp_recvspace=262144 no -o tcp_sendspace=262144 no -r -o tcp_sendspace=262144 I was looking at setting up Etherchannel in our environment. Do you recon it is not worth doing it? What issue did you experience? Regards, Jacques van den Berg TSM / SAP Storage Administrator Pick 'n Pay IT Email : [EMAIL PROTECTED] Tel : 021 - 658 1711 Fax : 021 - 658 1699 Mobile : 082 - 653 8164 Dis altyd lente in die hart van die mens wat God en sy medemens liefhet (John Vianney). -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Kauffman, Tom Sent: Monday, July 17, 2006 3:59 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Network tuning question -- AIX to AIX We finally figured out that ehterchannel was not doing what we wanted last week, so we re-configured our gigabit ethernet adapters as individual adapters on six separate internal networks. Now I've run into another interesting observation. I can fire up one interface from a client system to my TSM server with the ftp process coverd in the tuning doc (from /dev/zero to /dev/null) and get 110 MB per second over the interface. If I then fire up the second interface on the same client to the TSM server -- I get 110 MB/sec as an aggregate; both interfaces run at 55 to 58 MB/sec. This is not a TSM server constraint; I can get all six interfaces running at 110 MB/sec if I run one process on each of six clients. So it's a client tuning issue -- and not a problem with input from /dev/zero, as these results mirror my TDP/R3 backups this weekend. Any suggestions on what knobs to tweak? Better yet, any suggestions on how to determine what resource constraint I'm hitting? I'm beating my way through the various redbooks that cover network tuning, but this can be time-consuming. TIA Tom Kauffman NIBCO, Inc CONFIDENTIALITY NOTICE: This email and any attachments are for the exclusive and confidential use of the intended recipient. If you are not the intended recipient, please do not read, distribute or take action in reliance upon this message. If you have received this in error, please notify us immediately by return email and promptly delete this message and its attachments from your computer system. We do not waive attorney-client or work product privilege by the transmission of this message. Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED] Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED] Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED] Read our disclaimer at: http://www.picknpay.co.za/pnp/view/pnp/en/page5093? If you don't have web access, the disclaimer can be mailed to you on request. Disclaimer requests to be sent to [EMAIL PROTECTED]
Network tuning question -- AIX to AIX
We finally figured out that ehterchannel was not doing what we wanted last week, so we re-configured our gigabit ethernet adapters as individual adapters on six separate internal networks. Now I've run into another interesting observation. I can fire up one interface from a client system to my TSM server with the ftp process coverd in the tuning doc (from /dev/zero to /dev/null) and get 110 MB per second over the interface. If I then fire up the second interface on the same client to the TSM server -- I get 110 MB/sec as an aggregate; both interfaces run at 55 to 58 MB/sec. This is not a TSM server constraint; I can get all six interfaces running at 110 MB/sec if I run one process on each of six clients. So it's a client tuning issue -- and not a problem with input from /dev/zero, as these results mirror my TDP/R3 backups this weekend. Any suggestions on what knobs to tweak? Better yet, any suggestions on how to determine what resource constraint I'm hitting? I'm beating my way through the various redbooks that cover network tuning, but this can be time-consuming. TIA Tom Kauffman NIBCO, Inc CONFIDENTIALITY NOTICE: This email and any attachments are for the exclusive and confidential use of the intended recipient. If you are not the intended recipient, please do not read, distribute or take action in reliance upon this message. If you have received this in error, please notify us immediately by return email and promptly delete this message and its attachments from your computer system. We do not waive attorney-client or work product privilege by the transmission of this message.
