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. It is intended only for the addressee(s) named above. If > > > you receive this e-mail in error, please do not read, copy or > > disseminate > > > it in any manner. 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