Bonnie shows nicely some problems somewhere in pre6. Here's the numbers I
get from my machine:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
2.3.99-pre3
500 5547 91.1 10134 7.7 2983 3.9 4993 73.7 11015 7.3 87.5 1.5
2.3.99-pre5
300 5936 97.6 9908 7.8 2922 3.8 4670 70.3 10624 7.4 98.4 1.5
2.3.99-pre6
300 3515 58.5 9059 11.8 1606 2.0 1643 24.8 2008 1.5 64.5 1.3
When writing with a full cache (so old stuff is forced to the disk) things
get very juddery. In X, the cursor "leap frogs" and even in console text
appears in bursts. Top also shows kswapd using all remaing CPU cyclues
for most of the tests too, which is not seen in pre5. Seeks are really
slow too, which I can't understand at all.
Is it worth finding what "pre pre" has the problem first or is it known
and fixed already?
On the plus side, the OOM killer seems to be working now... at least it
took ALOT of effort to kill syslogd in pre5.
Lawrence
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