Article View: comp.arch
Article #1985Re: Memory utilization & inter-process contention
From: Andy-Krazy-Glew
Date: Thu, 24 Aug 1989 19:37
Date: Thu, 24 Aug 1989 19:37
20 lines
1741 bytes
1741 bytes
..> L. Yaffe talks about thrashing (2 25M processes on a 32M system), asks:
> Which (if any) high-performance Unix systems are capable of avoiding
>this type of inter-process contention? What works best - actual process
>swapping layered on top of demand paging, better paging algorithms,
>clever scheduling based on adaptive process priorities, ... ?
Gould NPL had a "working set" scheduler for memory; a working set was
determined by looking at the number of pages touched by a process in a
given interval of process virtual time (not system time); a process would
not run if the working set could not be loaded. Pervase Akhtar wrote a
paper on it for a past UNIX conference.
Working set schedulers are quite common in large (non-UNIX) systems.
See any recent issue of ACM SIGMETRICS' Conference Proceedings.
--
Andy "Krazy" Glew, Motorola MCD, aglew@urbana.mcd.mot.com
1101 E. University, Urbana, IL 61801, USA. {uunet!,}uiucuxc!udc!aglew
My opinions are my own; I indicate my company only so that the reader
may account for any possible bias I may have towards our products.
Technical Details
Message-ID:
<AGLEW.89Aug24153747@chant.urbana.mcd.mot.com>Path:
arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!asuvax!mcdphx!udc!chant!aglewReferences:
<3332@blake.acs.washington.edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!asuvax!mcdphx!udc!chant!aglew From: aglew@urbana.mcd.mot.com (Andy-Krazy-Glew) Newsgroups: comp.arch,comp.sys.mips Subject: Re: Memory utilization & inter-process contention Message-ID: <AGLEW.89Aug24153747@chant.urbana.mcd.mot.com> Date: 24 Aug 89 19:37:47 GMT References: <3332@blake.acs.washington.edu> Sender: aglew@urbana.mcd.mot.com Organization: Work: Motorola MCD, Urbana Design Center; School: University of Illinois at Urbana-Champaign Lines: 20 In-reply-to: lgy@blake.acs.washington.edu's message of 22 Aug 89 05:53:58 GMT