Subject: Re: interactive responsiveness
To: Steve Bellovin <smb@research.att.com>
From: None <netbsd@purk.ee>
List: current-users
Date: 02/02/2004 18:06:36
Hi,
This is really impressive!I enabled NEW_BUFQ_STRATEGY and softdeps and i see
*much* better disk perfomance!
Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
-------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
500 51806 57.0 51928 22.1 11553 5.0 48381 56.8 50732 13.8 420.7 2.8
Before that i got 42-45MB/sec on U160 disks!
Greetings
Quoting Steve Bellovin <smb@research.att.com>:
> Using a kernel from Saturday, with NEW_BUFQ_STRATEGY set but otherwise
> default options (and in particular with default sysctl settings for
> vm.), I'm seeing *excellent* responsiveness. I don't know what the
> changes were, but from my perspective, they're working just fine.
> (Note: I do not use softdep)
>
> --Steve Bellovin, http://www.research.att.com/~smb
>
>
>
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