slower write after 2.2.10 ?

Giuliano Pochini (pochini@denise.shiny.it)
Tue, 16 Nov 1999 19:44:51 +0100


Bonnie shows that from 2.2.11 block write test is way slower than in previous
kernel versions.

-------Sequential Output-------- ---Sequential Input--
--Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block---
--Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec
%CPU

2.2.13ns 100 3206 98.4 3784 16.0 1871 16.4 2751 76.7 5743 16.2 134.4
4.2
100 3157 96.8 2840 12.0 1827 16.0 2802 78.3 5775 14.9 125.7
3.3
2.2.13 100 3178 97.6 3675 15.0 1793 15.3 2946 82.1 5698 16.0 137.1
4.4
100 2602 79.7 3832 16.1 1992 17.9 2497 69.8 5568 14.2 139.8
4.0
2.2.12 100 3168 97.8 2290 11.7 1782 15.4 3372 94.5 5666 15.8 130.6
4.8
100 2850 89.4 3999 21.2 1880 16.7 2588 72.1 5601 15.2 139.6
4.4
2.2.11 100 2564 78.6 4413 22.7 2028 17.5 2666 74.5 5704 15.7 136.2
3.4
100 2488 76.4 4227 21.6 1991 17.5 2598 72.5 5727 14.9 135.1
3.4
2.2.10 100 3224 98.6 5977 24.8 2042 17.9 2892 80.7 5182 13.9 130.3
3.5
100 3192 97.1 5874 24.1 2048 18.2 2778 77.7 5166 14.3 140.7
4.3
2.2.7 100 2435 74.0 5984 25.1 2283 20.2 2759 76.9 5099 13.2 143.3
4.6
2.2.4 100 3218 98.4 5970 24.8 2150 19.1 2329 65.0 5012 13.4 129.8
3.8
100 3230 98.5 5902 25.0 2118 18.6 2849 79.7 5158 14.0 128.0
4.1

All tests are done running Bonnie 2 times (except 2.2.7) immediately after
boot on a PMac7300 604e 200 MHz, 64MB ram, quantum fireball ST3.2 (SCSI).

Bye.

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