Subject: Re: testers needed for O2 hacks
To: None <macallan@NetBSD.org>
From: Izumi Tsutsui <tsutsui@ceres.dti.ne.jp>
List: port-sgimips
Date: 07/25/2007 22:12:33
macallan@NetBSD.org wrote:

> The difference is that everything ( besides boot64 ) is built with 
> - -march=mips3 -mtune=r5k - this saves a lot of space and seems to be 
> substantially faster than the official builds which default to 
> - -march=mips1

Are all binaries are built with those flags?
It's fine to specify CPUFLAGS into GENERIC32_IP3x,
but we shouldn't do it for userland binaries by default
because we also support R3K Indigo (IP12) in this port.

> Besides that the kernel contains some changes regarding mace and mec - 

Could you also put a diff somewhere?

> On my machine this is stable so far, mec isn't blazingly fast ( only up 
> to 3MB/s ) but I don't get spontaneous resets on heavy network traffic 
> either.

Current mec(4) driver copies all RX mbufs and most TX mbufs
from/to DMA buffers so xfer rate is limited by memory bandwidth.
---
Izumi Tsutsui