[386BSD] processor caching effect on kernel build

Thread View: comp.unix.bsd

1 messages

[T] Back to Threads [V] Tree View [G] Group Articles

1 total messages Started by Dan Muntz Wed, 27 Jan 1993 20:55

#5746

Author: Dan Muntz
Date: Wed, 27 Jan 1993 20:55

36 lines
1395 bytes

People have been wondering about how the internal and external caches
affect performance under 386bsd.  Here are some numbers I got doing kernel
builds.

System:
486DX50 (8k internal cache) EISA
16mb 80ns (4 4Mx9 simms)
Adaptec 1542B (ISA) scsi
Micropolis 1528 scsi disk
256k 20ns external cache
64mb swap (whatever portion of 64mb 386bsd is capable of using)
gcc version 1.39

both caches disabled:
	make depend:	05:38.13
	make:		28:51.15

external cache enabled, internal disabled:
	make depend:	05:37.53
	make:		28:49.88

internal cache enabled, external disabled:
	make depend:	01:35.66
	make:		07:49.75

both caches enabled:
	make depend:	01:25.28
	make:		06:10.84

Kernel being built is 0.1 + patchkit0.2 + julian's scsi + pcfs + minor patches
Running kernel is the same (and contains NONOP patch recently posted).
You've just got to love 7:36 for building a kernel from scratch :)

  -Dan
   dmuntz@eecs.umich.edu

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads