W8SDZ@SIMTEL20.ARPA (Keith Petersen) (12/30/87)
I'm having similar problems on a Pyramid-98xe running OSx with the dual universe Unix 4.2BSD/SYSV. It's even worse on this one. If one attempts to FTP a file larger than about 80k either to or from this Pyramid machine it dies, giving the appearance to user that the system crashed but it eventually comes back after 4-5 minutes. If you use telnet to connect to another machine and "cat" a large text file that also kills it in the same way. The rc.local file does have ifconfig portname -trailers Another strange thing is that users who connect to this machine from a TAC get a 3-4 second pause in terminal output every 192 characters. These have been long-standing problems for about a year now. Pyramid doesn't seem to know how to fix it. --Keith Petersen
STJOHNS@SRI-NIC.ARPA (12/31/87)
Heh heh... I think I understand the 3-4 second pause at the TAC. TAC buffers are only 64 characters in size. (Per port) I'm not sure what window they advertise though, but 64*3 = 192 does sound suspicious. Your other problem sounds interesting, but you need to supply a bit more detailed info about it. Like, does the transfer hang up regardless of the direction? Is there a gateway or two involved? How about PINGs? Mike .
ron@TOPAZ.RUTGERS.EDU (Ron Natalie) (01/03/88)
I believe TAC's only offer a window for the buffer they have. The interesting thing is that they don't slide the window when data has been received, they wait until the buffer is full (empty) until they open the window up to the full buffer size. What this causes is usually a sequence of available window that goes 64, 32, 0, 64, 32, 0, 64, 32, 0... -Ron