Re: NetBSD speed curiosities

[Matt Thomas <matt%3am-software.com@localhost>]

On Apr 16, 2014, at 12:03 PM, John Klos <john%ziaspace.com@localhost> wrote:

> Hi,
> 
> I'm still puzzled by one thing that perhaps someone could explain. The 
> Dhrystone benchmark from pkgsrc should be pretty consistent due to its 
> simplicity. However, my 4000/30 (VLC) with NetBSD 6, which by many sources is 
> supposed to be 5 VUPs or so, only reports 2109 runs per second, which is only 
> about 1.2 times faster than the runs per second of an 11/780.
> 
> A 4000/60, which is supposed to be about 12 VUPs, gives 16305 runs/sec, which 
> is about 9.2 times faster than an 11/780.
> 
> Why is this? Is there some issue which makes code too large to run inside of 
> the CVAX SOC's 6k of cache? Is anyone running NetBSD 1.5 or another old 
> version who could get some more numbers?


Try an -Os version and see if it's different.