From: davidsen@ariel.crd.GE.COM (william E Davidsen) Subject: Re: extfs slow ? (was Re: Compiling X apps with shared libs) Date: 28 Feb 1993 22:55:59 GMT
In article <1mic6tINNgpd@escargot.xx.rmit.OZ.AU>, rcopg@minyos.xx.rmit.OZ.AU (Paul Gortmaker) writes:
| >you can install the next disk. Obcourse you could use an extfs partition
| >instead, but extfs is soooo slow.
|
|
| Really? I'd be quite interested to see some benchmark figures for the various
| filesystems that exist now. (...and I'm sure so would others!)
I'll let someone else run the benchmarks, but the problem is use of a
freelist instead of a bitmap. This saves space but increases
fragmentation over time. Therefore the partition gets slower.
This is why BSD uses AFS, SysV went to UFS, SCO went to EAFS, xfs was
written, and efs2 will have bitmaps. The initial f/s is not sloer by
much (if any), but an active f/s slows down as fragmentation increases.
--
bill davidsen, GE Corp. R&D Center; Box 8; Schenectady NY 12345
Windows NT is a *great* program!
It's everything CP/M should have been all along.