Collected Postings
2023- Collected Postings,
2016-2022 Collected Postings,
2013-2015 Collected Postings,
2011-2012 Collected Postings,
2009-2010 Collected Postings,
2007-2008 Collected Postings,
2005-2006 Collected Postings,
2003-2004 Collected Postings,
2001-2002 Collected Postings,
1993-2000 Collected Postings,
Misc. Topic Organization --
Internet History Postings --
Old Email Index
Postings by various subjects
Misc. 545 Tech Sq and Cambridge Science Center
Disk Engineering
Performance and/or Scheduling
Cluster, High Availability and/or Loosely-Coupled
APL and/or HONE
Multiprocessor, tightly-coupled, SMP, compare&swap
Working Set, LRU, WSClock Page Replacement Algorithm
801 &/or ROMP
Mainframe related subthreads moved:
MOVED: Location/address independent code
MOVED: continuous availability, disaster survivability, geographic survivability
MOVED: Backup, storage management
MOVED: Benchmarking, workload profile, capacity planning
MOVED: misc VAMPS and/or bounce lock
MOVED: BDAM and/or CICS
MOVED: IBM DASD, CKD, FBA, vtocs, multi-track search, etc
MOVED: Problem determination, zombies, dump readers
MOVED: Future System
MOVED: mentioning HASP
MOVED: Memory Mapping & File System
MOVED: Misc. commercial online computing
MOVED: GML origin at science center
MOVED: Peer-Coupled Shared Data
MOVED: System/R, SQL/DS, misc RDBMS
MOVED: Misc. commercial time-sharing
MOVED: Unbundling and charging for software
MOVED: 360/370 microcode
MOVED: 360 "plug compatible maker"
Networking postings moved
Public key postings moved
Integrity postings moved
Boyd postings moved
Postings by various misc. topics
Working Set, LRU, WSClock Page Replacement Algorithm
Some Related old email
- 2024g.html#30 Computer System Performance Work
- 2024f.html#29 IBM 370 Virtual memory
- 2024d.html#90 Computer Virtual Memory
- 2024d.html#88 Computer Virtual Memory
- 2024c.html#104 Virtual Memory Paging
- 2024c.html#102 Virtual Memory Paging
- 2024c.html#97 Virtual Memory Paging
- 2024c.html#94 Virtual Memory Paging
- 2024c.html#50 third system syndrome, interactive use, The Design of Design
- 2024c.html#6 Testing
- 2024b.html#97 IBM 360 Announce 7Apr1964
- 2024b.html#95 Ferranti Atlas and Virtual Memory
- 2024b.html#93 PC370
- 2024b.html#60 Vintage Selectric
- 2024b.html#44 Mainframe Career
- 2024b.html#39 Tonight's tradeoff
- 2024b.html#31 HONE, Performance Predictor, and Configurators
- 2024b.html#16 IBM 5100
- 2024.html#116 IBM's Unbundling
- 2024.html#73 UNIX, MULTICS, CTSS, CSC, CP67
- 2024.html#30 IBM Disks and Drums
- 2024.html#28 IBM Disks and Drums
- 2024.html#17 IBM Embraces Virtual Memory -- Finally
- 2023g.html#105 VM Mascot
- 2023g.html#102 VM Mascot
- 2023g.html#36 Timeslice, Scheduling, Interdata
- 2023g.html#7 Vintage 3880-11 & 3880-13
- 2023g.html#1 Vintage TSS/360
- 2023f.html#109 CSC, HONE, 23Jun69 Unbundling, Future System
- 2023f.html#36 Vintage IBM Mainframes & Minicomputers
- 2023f.html#34 Vintage IBM Mainframes & Minicomputers
- 2023f.html#26 Ferranti Atlas
- 2023f.html#25 Ferranti Atlas
- 2023e.html#49 VM370/CMS Shared Segments
- 2023e.html#34 IBM 360/67
- 2023e.html#33 Copyright Software
- 2023e.html#29 Copyright Software
- 2023e.html#19 Copyright Software
- 2023e.html#12 Tymshare
- 2023d.html#106 DASD, Channel and I/O long winded trivia
- 2023d.html#100 IBM 3083
- 2023d.html#24 VM370, SMP, HONE
- 2023d.html#23 VM370, SMP, HONE
- 2023c.html#90 More Dataprocessing Career
- 2023c.html#26 Global & Local Page Replacement
- 2023b.html#80 IBM 158-3 (& 4341)
- 2023.html#76 IBM 4341
- 2022h.html#93 IBM 360
- 2022h.html#56 Tandem Memos
- 2022h.html#44 360/85
- 2022h.html#21 370 virtual memory
- 2022f.html#119 360/67 Virtual Memory
- 2022f.html#44 z/VM 50th
- 2022e.html#79 Enhanced Production Operating Systems
- 2022e.html#50 Channel Program I/O Processing Efficiency
- 2022e.html#9 VM/370 Going Away
- 2022d.html#46 MGLRU Revved Once More For Promising Linux Performance Improvements
- 2022d.html#45 MGLRU Revved Once More For Promising Linux Performance Improvements
- 2022d.html#18 Computer Server Market
- 2022c.html#65 IBM Mainframe market was Re: Approximate reciprocals
- 2022c.html#0 System Response
- 2022b.html#94 Computer BUNCH
- 2022b.html#20 CP-67
- 2022.html#129 Dataprocessing Career
- 2022.html#83 165/168/3033 & 370 virtual memory
- 2022.html#80 165/168/3033 & 370 virtual memory
- 2022.html#26 Is this group only about older computers?
- 2022.html#25 CP67 and BPS Loader
- 2021k.html#124 IBM Clone Controllers
- 2021k.html#97 IBM Disks
- 2021k.html#0 Women in Computing
- 2021j.html#19 Windows 11 is now available
- 2021j.html#18 Windows 11 is now available
- 2021i.html#82 IBM Downturn
- 2021i.html#62 Virtual Machine Debugging
- 2021h.html#77 IBM XT/370
- 2021e.html#65 SHARE (& GUIDE)
- 2021e.html#3 IBM Internal Network
- 2021d.html#25 Field Support and PSRs
- 2021c.html#42 IBM Suggestion Program
- 2021c.html#38 Some CP67, Future System and other history
- 2021c.html#37 Some CP67, Future System and other history
- 2019e.html#121 Virtualization
- 2019e.html#19 All programmers that developed in machine code and Assembly in the 1940s, 1950s and 1960s died?
- 2019c.html#25 virtual memory
- 2019b.html#5 Oct1986 IBM user group SEAS history presentation
- 2019b.html#4 Oct1986 IBM user group SEAS history presentation
- 2018f.html#63 Is LINUX the inheritor of the Earth?
- 2018f.html#62 LRU ... "global" vs "local"
- 2018e.html#5 Computers, anyone?
- 2018d.html#68 tablets and desktops was Has Microsoft
- 2018d.html#28 MMIX meltdown
- 2018c.html#30 Bottlenecks and Capacity planning
- 2018.html#93 S/360 addressing, not Honeywell 200
- 2018.html#33 1963 Timesharing: A Solution to Computer Bottlenecks
- 2017k.html#35 little old mainframes, Re: Was it ever worth it?
- 2017k.html#12 thrashing, was Re: A Computer That Never Was: the IBM 7095
- 2017j.html#103 why VM, was thrashing
- 2017j.html#97 why VM, was thrashing
- 2017j.html#96 thrashing, was Re: A Computer That Never Was: the IBM 7095
- 2017j.html#95 why VM, was thrashing
- 2017j.html#85 Ferranti Atlas paging
- 2017j.html#84 VS/Repack
- 2017j.html#83 Ferranti Atlas paging
- 2017j.html#79 thrashing, was Re: A Computer That Never Was: the IBM 7095
- 2017j.html#78 thrashing, was Re: A Computer That Never Was: the IBM 7095
- 2017j.html#71 A Computer That Never Was: the IBM 7095
- 2017g.html#101 SEX
- 2017f.html#90 pneumatic cash systems was Re: [CM] What was your first home computer?
- 2017e.html#18 [CM] What was your first home computer?
- 2017e.html#4 TSS/8, was A Whirlwind History of the Computer
- 2017d.html#66 Paging subsystems in the era of bigass memory
- 2017d.html#63 Paging subsystems in the era of bigass memory
- 2017d.html#61 Paging subsystems in the era of bigass memory
- 2017d.html#52 Some IBM Research RJ reports
- 2017d.html#51 CPU Timerons/Seconds vs Wall-clock Time
- 2017c.html#45 The ICL 2900
- 2017c.html#26 Multitasking, together with OS operations
- 2017b.html#30 Virtualization's Past Helps Explain Its Current Importance
- 2017b.html#29 Virtualization's Past Helps Explain Its Current Importance
- 2017b.html#27 Virtualization's Past Helps Explain Its Current Importance
- 2017b.html#26 Virtualization's Past Helps Explain Its Current Importance
- 2017b.html#24 Disorder
- 2017.html#61 The ICL 2900
- 2017.html#59 The ICL 2900
- 2016h.html#52 Resurrected! Paul Allen’s tech team brings 50-year -old supercomputer back from the dead
- 2016g.html#48 "I used a real computer at home...and so will you" (Popular Science May 1967)
- 2016g.html#40 Floating point registers or general purpose registers
- 2016g.html#29 Computer hard drives have shrunk like crazy over the last 60 years -- here's a look back
- 2016f.html#92 ABO Automatic Binary Optimizer
- 2016e.html#77 Honeywell 200
- 2016e.html#2 S/360 stacks, was self-modifying code, Is it a lost cause?
- 2016d.html#47 PL/I advertising
- 2016c.html#0 You count as an old-timer if (was Re: Origin of the phrase "XYZZY")
- 2016b.html#112 You count as an old-timer if (was Re: Origin of the phrase "XYZZY")
- 2016.html#78 Mainframe Virtual Memory
- 2015h.html#43 Are we just running in place?
- 2015g.html#90 IBM Embraces Virtual Memory -- Finally
- 2015c.html#67 The Stack Depth
- 2015c.html#66 Messing Up the System/360
- 2015c.html#48 The Stack Depth
- 2015c.html#47 The Stack Depth
- 2015c.html#39 Virtual Memory Management
- 2015b.html#43 Connecting memory to 370/145 with only 36 bits
- 2014m.html#138 How hyper threading works? (Intel)2000.h5ml#5 IBM XT/370 and AT/370 (was Re: Computer of the century)
- 2014l.html#22 Do we really need 64-bit addresses or is 48-bit enough?
- 2014k.html#48 1950: Northrop's Digital Differential Analyzer
- 2014k.html#13 Question concerning running z/OS LPARs under z/VM
- 2014i.html#98 z/OS physical memory usage with multiple copies of same load module at different virtual addresses
- 2014i.html#96 z/OS physical memory usage with multiple copies of same load module at different virtual addresses
- 2014i.html#17 R.I.P. PDP-10?
- 2014e.html#14 23Jun1969 Unbundling Announcement
- 2014d.html#84 Difference between MVS and z / OS systems
- 2014d.html#32 [OT ] Mainframe memories
- 2013n.html#83 'Free Unix!': The world-changing proclamationmade30yearsagotoday
- 2013m.html#46 50,000 x86 operating system on single mainframe
- 2013l.html#25 Teletypewriter Model 33
- 2013k.html#70 What Makes a Tax System Bizarre?
- 2013i.html#30 By Any Other Name
- 2013g.html#11 What Makes code storage management so cool?
- 2013f.html#42 True LRU With 8-Way Associativity Is Implementable
- 2013e.html#71 The Atlas 2 and its Slave Store
- 2013d.html#7 What Makes an Architecture Bizarre?
- 2013c.html#49 What Makes an Architecture Bizarre?
- 2013c.html#48 What Makes an Architecture Bizarre?
- 2013c.html#17 I do not understand S0C6 on CDSG
- 2013c.html#15 I do not understand S0C6 on CDSG
- 2013b.html#11 what makes a computer architect great?
- 2012o.html#31 Regarding Time Sharing
- 2012m.html#18 interactive, dispatching, etc
- 2012l.html#38 S/360 architecture, was PDP-10 system calls
- 2012g.html#62 Caches, was Wardialing statistics(
- 2012g.html#25 VM370 40yr anniv, CP6 44yr anniv
- 2012g.html#21 Closure in Disappearance of Computer Scientist
- 2012f.html#18 Word Length
- 2012c.html#47 nested LRU schemes
- 2012c.html#33 5 Byte Device Addresses?
- 2012c.html#29 5 Byte Device Addresses?
- 2012c.html#28 5 Byte Device Addresses?
- 2012c.html#27 5 Byte Device Addresses?
- 2012c.html#17 5 Byte Device Addresses?
- 2011p.html#60 Spontaneous conduction
- 2011p.html#53 Odd variant on clock replacement algorithm
- 2011l.html#64 OUCB usage
- 2011l.html#6 segments and sharing, was 68000 assembly language programming
- 2011j.html#10 program coding pads
- 2011g.html#59 Is the magic and romance killed by Windows (and Linux)?
- 2011f.html#73 Wylbur, Orvyl, Milton, CRBE/CRJE were all used (and sometimes liked) in the past
- 2011f.html#71 how to get a command result without writing it to a file
- 2011f.html#67 Old email from spring 1985
- 2011f.html#59 Drum Memory with small Core Memory?
- 2011e.html#79 I'd forgotten what a 2305 looked like
- 2011e.html#66 |What is the maximum clock rate given the state of today's technology?
- 2011e.html#27 Multiple Virtual Memory
- 2011e.html#8 Multiple Virtual Memory
- 2011e.html#3 Multiple Virtual Memory
- 2011e.html#2 Multiple Virtual Memory
- 2011d.html#82 Multiple Virtual Memory
- 2011d.html#81 Multiple Virtual Memory
- 2011c.html#92 History of VM Performance
- 2011c.html#90 A History of VM Performance
- 2011c.html#88 Hillgang -- VM Performance
- 2011c.html#87 A History of VM Performance
- 2011c.html#74 A History of VM Performance
- 2011c.html#72 A History of VM Performance
- 2011c.html#8 The first personal computer (PC)
- 2011.html#44 CKD DASD
- 2010p.html#41 The Varieties of Virtualization
- 2010o.html#47 origin of 'fields'?
- 2010n.html#41 Central vs. expanded storage
- 2010n.html#39 Central vs. expanded storage
- 2010m.html#15 History of Hard-coded Offsets
- 2010m.html#5 Memory v. Storage: What's in a Name?
- 2010l.html#23 OS idling
- 2010j.html#37 Idiotic programming style edicts
- 2010i.html#18 How to analyze a volume's access by dataset
- 2010h.html#17 LINUX on the MAINFRAME
- 2010g.html#73 Interesting presentation
- 2010g.html#72 Interesting presentation
- 2010g.html#71 Interesting presentation
- 2010g.html#43 Interesting presentation
- 2010g.html#42 Interesting presentation
- 2010g.html#23 16:32 far pointers in OpenWatcom C/C++
- 2010g.html#22 Mainframe Executive article on the death of tape
- 2010g.html#2 16:32 far pointers in OpenWatcom C/C++
- 2010g.html#0 16:32 far pointers in OpenWatcom C/C++
- 2010f.html#91 16:32 far pointers in OpenWatcom C/C++
- 2010f.html#90 16:32 far pointers in OpenWatcom C/C++
- 2010f.html#89 16:32 far pointers in OpenWatcom C/C++
- 2010f.html#85 16:32 far pointers in OpenWatcom C/C++
- 2010e.html#61 z9 / z10 instruction speed(s)
- 2010d.html#78 LPARs: More or Less?
- 2010d.html#60 LPARs: More or Less?
- 2010d.html#6 Queing theory paper
- 2009r.html#54 While watching Biography about Bill Gates on CNBC last Night
- 2009l.html#12 August 7, 1944: today is the 65th Anniversary of the Birth of the Computer
- 2009h.html#76 A Math Geek's Plan to Save Wall Street's Soul
- 2009g.html#74 308x Processors - was "Mainframe articles"
- 2008r.html#21 What if the computers went back to the '70s too?
- 2008n.html#22 VMware Chief Says the OS Is History
- 2008m.html#34 Future architectures
- 2008m.html#13 Yet another squirrel question - Results (very very long post)
- 2008m.html#7 Future architectures
- 2008k.html#80 How to calculate effective page fault service time?
- 2008k.html#34 squirrels
- 2008k.html#32 squirrels
- 2008j.html#48 dollar coins
- 2008j.html#6 What is "timesharing" (Re: OS X Finder windows vs terminal window weirdness)
- 2008h.html#84 Microsoft versus Digital Equipment Corporation
- 2008h.html#79 Microsoft versus Digital Equipment Corporation
- 2008h.html#70 New test attempt
- 2008g.html#48 How did third-party software companies deal with unbundling being sprung on them?
- 2008g.html#9 Was CMS multi-tasking?