[TUHS] (Amdahl UNIX) "Notes on Au Performance - or How to get the Pb out of Au"

Sebastien F4GRX f4grx at f4grx.net
Wed Jul 19 23:50:30 AEST 2023


Thank you, this is a very interesting read. I will share this with 
friends as soon as this is publicly available in the TUHS archives.

We see premices of the Linux Copy-On-Write forking method!

I also note that they decided to avoid a global kernel lock.


Le 19/07/2023 à 03:08, Tom Lyon a écrit :
> This is perhaps the first significant document I wrote at Amdahl. 
> Although undated, I believe this was written in August 1979, after I 
> had attended a 2 week class at IBM Chicago about VM//370(CP) internals 
> and performance.
> The paper makes reference to V7 UNIX being "on order", so this is when 
> the V6 UNIX system was in use.  IIRC, V7 UNIX was released in Nov. of 
> 1979.
> https://drive.google.com/file/d/1cB2eqTwmicj1AQOiULDZjED5Rq-_V4N4/view?usp=sharing
> Huge thanks to my friend Karl D. for hanging on to this for 44 years.

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