- From: David - Morris <dwm@shell.portal.com>
- Date: Sat, 17 Dec 1994 01:49:22 -0800 (PST)
- Cc: http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
On Fri, 16 Dec 1994, Jeffrey Mogul wrote: > A little experiment should help shed some light on this. On a reasonably > fast machine (a DEC3000/600), I did (after first arranging for /vmunix > to be in the filesystem cache): > % time wc /vmunix > 15102 97927 6351808 /vmunix > 0.93u 0.14s 0:01 94% 0+1k 0+0io 15pf+0w > a% time ngrep masinter@parc.xerox.com /vmunix > 0.27u 0.19s 0:00 74% 0+1k 4+3io 47pf+0w > % > ngrep uses a modified Boyer-Moore algorithm. Larry is right; I'm sorry but I'm quite skeptical about your experimental design and it's applicability to the HTTP context as well. For starters finding split points in an inbound byte stream is a different problem than presented by a file full of bytes all present and waiting for processing. Secondly, I am suspicious that there is a marked difference in the quality of implementation of wc vs. ngrep interms of program organization. Dave Morris
Received on Saturday, 17 December 1994 01:50:21 UTC