On Friday, 04/17/2009 at 09:59 EDT, "Salecky, Zenko J" <[email protected]> wrote: > z/VM is at level 5.4. Connectivity is through vswitch layer2 and an OSA- > Express3 10 GbE adapter. When using FTP to move a file between two VMs I > am getting transfer rates of 16.0 - 17.0 Kbytes/sec. I ran a trace on the > VM where the FTPSERV is running and see the following messages once the > data session is established > > DTCREQ034I DoSendB not signalling TcpDown for conn 1002
The stack has previously scheduled an outbound TCP segment and it isn't necessary to schedule the current segment. > DTCPRI181I PrevFrustrated: Frustrated TCB queue > DTCPRI182I NextFrustrated: Frustrated TCB queue > > DTCPRI199I Sender frustration level: Frustrated There are too many outbound TCP segments queued for transmission. Look at the TCPIP console and NETSTAT POOL for any evidence of any buffer shortages. > but am not able to locate where messages DTCREQ034I, DTCPRI181I, > DTCPRI182I or DTCPRI199I are documented. They aren't documented as they aren't really messages - they are traces meaningful to the developers. Alan Altmark z/VM Development IBM Endicott
