Re: Very slow sed...

On Wed, Jun 20, 2007 at 10:24:01AM -0400, David Cross wrote:
>  Ok the subject line is misleading.. but I don't know how else to put it. I 
>  have a machine on which SOME programs are slow.  VERY SLOW.  Other programs 
>  run just fine.  I cannot seem to find the source of the problem.

Two things I can think of:

1) Memory issues -- memtest86 could help show this kind of problem.  Try
removing memory, and if the problem continues, swapping the pair you
removed with the pair that's installed.

2) Disk issues -- reading /usr/bin/sed off the disk where there's a
soon-to-be-bad block.  The disk may be trying to work around it and
doing a delayed read (inducing EC).  This seems less likely to be the
case than bad memory, but I've seen it happen.

-- 
| Jeremy Chadwick                                    jdc at parodius.com |
| Parodius Networking                           http://www.parodius.com/ |
| UNIX Systems Administrator                      Mountain View, CA, USA |
| Making life hard for others since 1977.                  PGP: 4BD6C0CB |

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