rwp@cup.portal.com (Roger William Preisendefer) (05/06/90)
I have been experimenting with my new Trailblazer+ PC, trying to get the 14000 pbs transfer rate that it claims is possible. The best I have managed is 800 characters per second, which is a little disappointing for such an expensive modem. I have it set to compressed and UUCP or xmodem (depending on what I am connected to.) Any suggestions? Roger Preisendefer
rls@svcs1.UUCP (Bob Strait) (05/06/90)
In article <29641@cup.portal.com> rwp@cup.portal.com (Roger William Preisendefer) writes: >I have been experimenting with my new Trailblazer+ PC, trying to get the >14000 pbs transfer rate that it claims is possible. The best I have >managed is 800 characters per second, which is a little disappointing >for such an expensive modem. I have it set to compressed and UUCP or >xmodem (depending on what I am connected to.) Any suggestions? > And what sort of traffic are you handling with this configuration? If it's compressed news batches from your feed, you're defeating the purpose of compression. It is inherent in the Lempel-Ziv compression algorithm that an attempt to compress already-compressed data actually loses compression. You are asking your modem (and the other guy's) to spend time compressing and uncompressing data without effect. Turn off the modems' compression and watch the fun. I was beleagured by this for a while myself, but now I get an effective 1000-1200 bytes/sec through the modems, which, when uncompressed, provides over 2000 bytes/sec into my news spool. And, at ten bits/byte (including start and stop bits), that ain't chopped liver.