Thank you all very much. Joe
Joseph Vitale Technology Services Group Mainframe Operating Systems Pershing Plaza 95 Christopher Columbus Drive Floor 14 Jersey City, N.J. 07302 Work 201-395-1509 Cell 917-903-0102 -----Original Message----- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Bruce Hayden Sent: Tuesday, August 11, 2015 3:05 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Suggestion on improving FTP large file transfer According to the document, "TSO" only applies if the OSA connection is layer 3 and directly attached (so dedicated under z/VM.) Ignore this since you are using a vswitch. On Mon, Aug 10, 2015 at 1:27 PM, Vitale, Joseph <joseph.vit...@bnymellon.com > wrote: > Thank Bruce, good information. Question, Pg 13 "TCP segmentation > offload(TSO)" . My guests are using a VSWITCH with VLAN Tags. Would > offload still apply ? > > Thanks > Joe > > > Joseph Vitale > Technology Services Group > Mainframe Operating Systems > > Pershing Plaza > 95 Christopher Columbus Drive > Floor 14 > Jersey City, N.J. 07302 > Work 201-395-1509 > Cell 917-903-0102 > > -----Original Message----- > From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of > Bruce Hayden > Sent: Monday, August 10, 2015 12:02 PM > To: LINUX-390@VM.MARIST.EDU > Subject: Re: Suggestion on improving FTP large file transfer > > Start out by looking at the Network tuning presentation on this page: > > http://www.ibm.com/developerworks/linux/linux390/perf/tuning_networkin > g.html It has suggestions for tuning the networking on Linux for these > types of transfers. > > On Mon, Aug 10, 2015 at 10:45 AM, Vitale, Joseph < > joseph.vit...@bnymellon.com> wrote: > > > Hello, > > > > We have approximately 30Gb to FTP, zLinux to zOS. Would like to > > improve FTP timing but found TCP Receive Socket window > > default/max is 32Mb. > > > > Also, Send Socket window default/max is 32 Mb. Window scaling is > > enabled. Have not checked zOS Blocksize or number of extents. > > > > Not sure if "quote site" comes into play FTPing to zLinux? > > > > Running Red Hat 6.6 under zVM 6.3 > > > > > > Thanks > > Joe > > > > Joseph Vitale > > Technology Services Group > > Mainframe Operating Systems > > > > Pershing Plaza > > 95 Christopher Columbus Drive > > Floor 14 > > Jersey City, N.J. 07302 > > Work 201-395-1509 > > Cell 917-903-0102 > > > > > > The information contained in this e-mail, and any attachment, is > > confidential and is intended solely for the use of the intended > recipient. > > Access, copying or re-use of the e-mail or any attachment, or any > > information contained therein, by any other person is not authorized. > > If you are not the intended recipient please return the e-mail to > > the sender and delete it from your computer. Although we attempt to > > sweep e-mail and attachments for viruses, we do not guarantee that > > either are virus-free and accept no liability for any damage > > sustained as a > result of viruses. > > > > Please refer to http://disclaimer.bnymellon.com/eu.htm for certain > > disclosures relating to European legal entities. > > > > -------------------------------------------------------------------- > > -- For LINUX-390 subscribe / signoff / archive access instructions, > > send email to lists...@vm.marist.edu with the message: INFO > > LINUX-390 or visit > > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > -------------------------------------------------------------------- > > -- For more information on Linux on System z, visit > > http://wiki.linuxvm.org/ > > > > > > -- > Bruce Hayden > z/VM and Linux on z Systems ATS > IBM, Endicott, NY > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, send > email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ > > The information contained in this e-mail, and any attachment, is > confidential and is intended solely for the use of the intended recipient. > Access, copying or re-use of the e-mail or any attachment, or any > information contained therein, by any other person is not authorized. > If you are not the intended recipient please return the e-mail to the > sender and delete it from your computer. Although we attempt to sweep > e-mail and attachments for viruses, we do not guarantee that either > are virus-free and accept no liability for any damage sustained as a result > of viruses. > > Please refer to http://disclaimer.bnymellon.com/eu.htm for certain > disclosures relating to European legal entities. > -- Bruce Hayden z/VM and Linux on z Systems ATS IBM, Endicott, NY ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ The information contained in this e-mail, and any attachment, is confidential and is intended solely for the use of the intended recipient. Access, copying or re-use of the e-mail or any attachment, or any information contained therein, by any other person is not authorized. If you are not the intended recipient please return the e-mail to the sender and delete it from your computer. Although we attempt to sweep e-mail and attachments for viruses, we do not guarantee that either are virus-free and accept no liability for any damage sustained as a result of viruses. Please refer to http://disclaimer.bnymellon.com/eu.htm for certain disclosures relating to European legal entities.
