Path: utzoo!utgpu!water!watmath!clyde!bellcore!rutgers!njin!princeton!udel!gatech!ncar!noao!mcdsun!mcdchg!heiby From: heiby@mcdchg.UUCP (Ron Heiby) Newsgroups: comp.dcom.modems Subject: Re: more real data for Trailblazers and Argentina Message-ID: <10127@mcdchg.UUCP> Date: 3 Jun 88 23:55:55 GMT References: <14605@uunet.UU.NET> Reply-To: heiby@mcdchg.UUCP (Ron Heiby) Organization: Motorola Microcomputer, Schaumburg, IL Lines: 31 Rick Adams (rick@uunet.UU.NET) writes: > 5/30 17:23 48294 bytes 43.90 secs 8799 bps > 5/30 17:24 30301 bytes 26.71 secs 9075 bps > 5/30 17:25 8073 bytes 5.72 secs 11290 bps > 5/30 17:26 18993 bytes 12.47 secs 12184 bps > 5/30 17:27 30008 bytes 19.90 secs 12063 bps > 5/30 17:29 42360 bytes 31.79 secs 10659 bps > 5/30 17:31 48036 bytes 38.66 secs 9940 bps > 5/30 17:32 37823 bytes 26.25 secs 11527 bps > 5/30 17:32 32586 bytes 23.56 secs 11064 bps > 5/30 17:34 50714 bytes 40.66 secs 9978 bps > 5/30 17:35 29146 bytes 19.93 secs 11699 bps First, let me say that I find this to be very impressive. Now, it has given me a chance to look at something I've been meaning to for some time. At first glance, it looks like the average throughput for this set of transfers is something like 1000 characters per second. But wait! Look at the wall clock time. I am assuming that this set of 11 transfers took place on a single call. I have added the total bytes and get 376,334 in 12 minutes. This works out to be 522.7 cps, or slightly better than half what it appears to be at first. Now, I know that there is some additional time used to send a short overhead file with uucp, but it really seems to me that there's an awful lot of think time going on between transfers. Although I haven't gone to the trouble of calculating it, watching the lights blink on my Telebit gives me the same impression. Anyone have any thoughts on the matter? It looks to me like with a reliable link, that bigger files are even more of a win with Telebit speeds than with 1200 bps modems. -- Ron Heiby, heiby@mcdchg.UUCP Moderator: comp.newprod & comp.unix "Failure is one of the basic Freedoms!" The Doctor (in Robots of Death)