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IWETHEY Home / IWETHEY Board / Unix Forum / In fact...
Post #176,164
by ben_tilly
9/24/04 11:22:34 AM
Reply
New In fact...
Moore's law goes faster for CPUs than for various kinds of I/O. I've actually seen experiments where it was faster to decompress files on the fly from disk than to read uncompressed data!

For transferring text between machines, compression is virtually guaranteed to be a significant win.

Cheers,
Ben
About the use of language: it is impossible to sharpen a pencil with a blunt axe. It is equally vain to try to do it with ten blunt axes instead. -- Edsger W. Dijkstra
Post #176,175
by deSitter
Picture of deSitter
9/24/04 11:47:50 AM
Reply
New Re: In fact...
I'll try both ways and report the "time"s.
-drl
     tar vs. cpio - (deSitter) - (43) - Sept. 23, 2004, 09:34:54 AM EDT
         I'd use tar. - (static) - (2) - Sept. 23, 2004, 10:25:44 AM EDT
             Re: I'd use tar. - (deSitter) - (1) - Sept. 23, 2004, 10:44:56 AM EDT
                 I've done it on Linux., - (pwhysall) - Sept. 23, 2004, 10:46:57 AM EDT
         dd - (pwhysall) - Sept. 23, 2004, 10:44:18 AM EDT
         What I'd do. - (folkert) - (2) - Sept. 23, 2004, 10:48:01 AM EDT
             Re: What I'd do. - (deSitter) - (1) - Sept. 23, 2004, 10:50:13 AM EDT
                 Nope - (ben_tilly) - Sept. 23, 2004, 11:05:45 AM EDT
         What I'd be inclined to do - (ben_tilly) - (35) - Sept. 23, 2004, 11:01:05 AM EDT
             What he said. -NT - (static) - Sept. 23, 2004, 10:09:07 PM EDT
             Re: What I'd be inclined to do - (deSitter) - (33) - Sept. 24, 2004, 04:19:06 AM EDT
                 The CPU overhead is likely less than the network overhead. - (pwhysall) - (30) - Sept. 24, 2004, 07:04:00 AM EDT
                     Especially text... -NT - (Another Scott) - (4) - Sept. 24, 2004, 10:31:45 AM EDT
                         Not a given - (deSitter) - (3) - Sept. 24, 2004, 10:46:03 AM EDT
                             Even PKZip on a 286 running DOS could fly through text files - (Another Scott) - (1) - Sept. 24, 2004, 11:04:49 AM EDT
                                 Re: Even PKZip on a 286 running DOS could fly - (deSitter) - Sept. 24, 2004, 11:08:01 AM EDT
                             Doesn't matter - (ben_tilly) - Sept. 24, 2004, 11:07:23 AM EDT
                     In fact... - (ben_tilly) - (1) - Sept. 24, 2004, 11:22:34 AM EDT
                         Re: In fact... - (deSitter) - Sept. 24, 2004, 11:47:50 AM EDT
                     Your pipe is too small then - (broomberg) - (22) - Sept. 24, 2004, 05:46:13 PM EDT
                         Try different compression quality? - (ben_tilly) - (18) - Sept. 24, 2004, 06:54:01 PM EDT
                             Try? We do not try. We do. - (broomberg) - (17) - Sept. 25, 2004, 08:13:15 PM EDT
                                 An advantage of gzip is that it's easy to detect errors. - (Another Scott) - (1) - Sept. 25, 2004, 08:25:35 PM EDT
                                     If you MUST... - (broomberg) - Sept. 25, 2004, 08:44:07 PM EDT
                                 Thanks for the figures - (ben_tilly) - Sept. 26, 2004, 01:56:09 AM EDT
                                 Thanks, and questions. - (pwhysall) - Sept. 26, 2004, 02:00:08 AM EDT
                                 lzop vs. gzip - (pwhysall) - (12) - Sept. 26, 2004, 02:34:36 AM EDT
                                     Interesting - (broomberg) - (11) - Sept. 26, 2004, 07:31:51 AM EDT
                                         Seeing you tease Peter makes me aware that... - (ben_tilly) - (1) - Sept. 27, 2004, 11:58:22 AM EDT
                                             In person - (broomberg) - Sept. 27, 2004, 12:41:09 PM EDT
                                         What are happening to the 450s? - (folkert) - (3) - Sept. 27, 2004, 12:28:46 PM EDT
                                             Dunno. Ask Dave. - (broomberg) - (2) - Sept. 27, 2004, 12:39:33 PM EDT
                                                 I'm sorry Dave, but Dave's friend Dave says Dave's at... - (ben_tilly) - Sept. 27, 2004, 01:05:25 PM EDT
                                                 Thanks. -NT - (folkert) - Sept. 28, 2004, 02:19:24 PM EDT
                                         Ah, but in MY house... - (pwhysall) - (4) - Sept. 28, 2004, 03:32:35 AM EDT
                                             Not spam - (broomberg) - (3) - Sept. 28, 2004, 07:33:49 PM EDT
                                                 Still spam; just spam on dead trees. - (CRConrad) - (2) - Sept. 29, 2004, 01:43:02 AM EDT
                                                     "admirable or honourable" - Yup - (broomberg) - (1) - Sept. 29, 2004, 08:19:15 AM EDT
                                                         The fulfillment (sic) third, maybe. The rest? Nope. - (CRConrad) - Sept. 29, 2004, 01:54:13 PM EDT
                         That was my intuitive suspicion -NT - (deSitter) - (2) - Sept. 25, 2004, 06:22:42 PM EDT
                             And as usual - (broomberg) - (1) - Sept. 25, 2004, 08:15:23 PM EDT
                                 Well sure - (deSitter) - Sept. 26, 2004, 12:52:31 PM EDT
                 Beware spaces in filenames - (Arkadiy) - (1) - Sept. 24, 2004, 01:37:14 PM EDT
                     Already checked :) -NT - (deSitter) - Sept. 24, 2004, 03:11:47 PM EDT

Until it's frozen.
126 ms