Dave, did you try the basic PING and TRACERTE to see if there's anything different ? Is it a basic FTP ? SFTP ? FTPS ?
Did you try with XMIT through JNE (if available) to measure any difference ? Best regards. Max Il giorno gio 28 mar 2024 alle ore 14:54 Styles, Andy (CIO GS&S - Core Infrastructure & IT Operations ) < [email protected]> ha scritto: > Classification: Public > > Do you have access to any other kind of transfer mechanism, and if so, > does it happen with that too? (thinking Connect:Direct for example). > Is the target device of the transfer the same on fast vs slow? > > Andy Styles > z/Series Systems Programmer > > -----Original Message----- > From: IBM Mainframe Discussion List <[email protected]> On Behalf > Of Jousma, David > Sent: Thursday, March 28, 2024 1:14 PM > To: [email protected] > Subject: Re: Slow FTP's > > *** This email is from an external source - be careful of attachments and > links. Please report suspicious emails *** > > There is, but same for all lpars involved. > > Dave Jousma > Vice President | Director, Technology Engineering > > > > > > From: IBM Mainframe Discussion List <[email protected]> on behalf > of Joe Monk <[email protected]> > Date: Thursday, March 28, 2024 at 9:12 AM > To: [email protected] <[email protected]> > Subject: Re: Slow FTP's > Is there a firewall or switch in the path? Joe On Thu, Mar 28, 2024 at 8: > 03 AM Jousma, David < 000001a0403c5dc1-dmarc-request@ listserv. ua. edu> > wrote: > Joe, > > I had not, just did, worse yet > > EZA1485I 12902400 bytes > > > Is there a firewall or switch in the path? > > > > Joe > > > > On Thu, Mar 28, 2024 at 8:03 AM Jousma, David < > > [email protected]> wrote: > > > > > Joe, > > > > > > I had not, just did, worse yet > > > > > > EZA1485I 12902400 bytes transferred - 10 second interval rate 1281.27 > > > KB/sec - Overall transfer rate 1281.27 KB/sec > > > EZA1485I 21381120 bytes transferred - 10 second interval rate 838.65 > > > KB/sec - Overall transfer rate 1059.52 KB/sec > > > EZA1485I 29491200 bytes transferred - 10 second interval rate 791.23 > > > KB/sec - Overall transfer rate 969.15 KB/sec > > > > > > Dave Jousma > > > Vice President | Director, Technology Engineering > > > > > > > > > > > > > > > > > > From: IBM Mainframe Discussion List <[email protected]> on > > behalf > > > of Joe Monk <[email protected]> > > > Date: Thursday, March 28, 2024 at 8:56 AM > > > To: [email protected] <[email protected]> > > > Subject: Re: Slow FTP's > > > Have you tried MODE S (streaming) and TYPE E? Joe On Thu, Mar 28, 2024 > > at > > > 7: 31 AM Jousma, David < 000001a0403c5dc1-dmarc-request@ listserv. ua. > > > edu> wrote: > All, > > Grasping at straws here, IBM support center is > > > baffled too. > > > > > > > > > > Have you tried MODE S (streaming) and TYPE E? > > > > > > > > > > > > Joe > > > > > > > > > > > > On Thu, Mar 28, 2024 at 7:31 AM Jousma, David < > > > > > > [email protected]> wrote: > > > > > > > > > > > > > All, > > > > > > > > > > > > > > Grasping at straws here, IBM support center is baffled too. > > > > > > > > > > > > > > To clone z/OS maintenance to various disconnected sysplex’s I do a > > > DFDSS > > > > > > > dump, and FTP it everywhere it needs to be. Its roughly a 50Gb file > > > > > > > transfer. There is some environmental issue causing slow file > > > transfers > > > to > > > > > > > some systems (40mb’s a sec) and fast file transfers (150Mb/sec) to > > > other > > > > > > > systems on the same CEC. With IBM support help, we’ve narrowed down > > > the > > > > > > > problem to the specification of MODE B and EBCDIC on the transfer > > > since > > > it > > > > > > > is a DSS dump. Remove those, and the transfer is fast on the slow > > > > > > > systems, and still fast on the fast systems. Obviously that isn’t a > > > > > > > solution though. > > > > > > > > > > > > > > So, we are a GDPS shop. The oddity is that all the “fast” transfers > are > > > > > > > to the K systems(control systems), and all the “slow” transfers are > > > to > > > the > > > > > > > traditional application systems. TEST, DEV, PROD makes no difference, > > > nor > > > > > > > does LPAR busy or not busy. > > > > > > > > > > > > > > It seems there is something configured differently on the “slow” > > > systems > > > > > > > that is affecting mode b, ebcdic file transfers, but for the life of > > > me, > > > I > > > > > > > cannot put my finger on what, nor can the support center, except > > > that the > > > > > > > issue is at the remote end, in that the OS cannot offload the data > > > fast > > > > > > > enough, so TCPIP/FTP is slowing the transfer pace. > > > > > > > > > > > > > > A virtual adult beverage of choice to the one that can point in a > > > > > > > direction to look…. > > > > > > > > > > > > > > > > > > > > > Dave Jousma > > > > > > > Vice President | Director, Technology Engineering > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > This e-mail transmission contains information that is confidential > > > and > > > may > > > > > > > be privileged. 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