Re: cvs performance and interrupts

[Nick Hudson <skrll%netbsd.org@localhost>]

On 01/04/17 08:35, Riccardo Mottola wrote:
> Hi,
>
> I was able to start my faithful 715 again... 

To what version?

> after fixing disc issues (the SCSI cable went bad, I had to replace it 
> with a similar one, but I long thought it was some other kind of HW 
> issue and it took me a lot o tests).
>
> I know that it is not the fastest box around anymore, however I run 
> cvs update on pkgsrc and it took 12 hours to complete! I checked and 
> the cpu usage with top and cvs was usually in biowait CPU state was 
> 99% interrupt (or close to)
>
> Is that "expected"? Or is there an issue in the ethernet or SCSI 
> driver? I use other vintage hardware of that period and it is usually 
> not that slow!
>
> I checked "dmesg" and saw  no errors listed (like timeous or other 
> issues). No messages at all after root mount, this looks reassuring.
>
>
> Riccardo

Nick