Difference between revisions of "4.1 BSD"
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| − | This version addressed many of the performance shortcomings in [[4.0 BSD]] that were brought up in a VMS vs BSD paper. Many of the changes are outlined in [[Bug fixes and changes in 4.1bsd]]. | + | This version addressed many of the performance shortcomings in [[4.0 BSD]] that were brought up in a VMS vs BSD paper. Many of the changes are outlined in [[Bug fixes and changes in 4.1bsd]]. One of the big points of 4.1 is that it supported the [[VAX-11/750]], which became a workhorse favorite of the DoD, which in turn led to DARPA grants to the [[CSRG]] to continue developing BSD. |
Other features included: | Other features included: | ||
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* vfork() | * vfork() | ||
| − | 4.1 was | + | 4.1 BSD, June 1981 4BSD was upgraded to include many performance improvements, support for a new VAX model and autoconfiguration. |
| + | |||
| + | Once DARPA was funding the development of BSD, it lead to 2 big improvments from 4.1 to 4.2 which included [[FFS]], and [[TCP/IP]]. From what I understand 4.1a includes the BBN stack, but on a 750, it only can perform at 56kb on Ethernet, and maximizes the CPU to 100%, whereas Bill Joy's TCP/IP could get upwards of 700k/sec. | ||
== Getting this to run == | == Getting this to run == | ||
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=== 4.1c === | === 4.1c === | ||
| − | + | There is two tape images on bitsavers [http://bitsavers.trailing-edge.com/bits/UCB_CSRG/4.1C_BSD_1of2.zip 4.1C BSD 1 of 2], and [http://bitsavers.trailing-edge.com/bits/UCB_CSRG/4.1C_BSD_2of2.zip 4.1C BSD 2 of 2]. I'm working on trying to install them to [[SIMH]]. | |
== Games == | == Games == | ||
| Line 40: | Line 42: | ||
[[Bug fixes and changes in 4.1 BSD]] | [[Bug fixes and changes in 4.1 BSD]] | ||
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| + | == Post 4.1 releases == | ||
| + | |||
| + | |||
| + | 4.1a This was a test release including TCP/IP and the socket interface. It saw a wide release, although it seems to have disappeared. | ||
| + | |||
| + | 4.1b This was a test release, used only a Berkley and it includes the new Fast File System, using clustering for much improved performance, and contained the netw networking code. | ||
| + | |||
| + | 4.1c 1982/1983 The thrid test release between 4.1BSD and 4.2BSD, it was distributed to about 100 sites and includes most 4.2 features except for the new signal facility. | ||
{{Nav Unix}} | {{Nav Unix}} | ||
[[Category:CSRG BSD]] | [[Category:CSRG BSD]] | ||
[[Category:Operating Systems]] | [[Category:Operating Systems]] | ||
Revision as of 08:47, 2 February 2016
| 4.1 BSD | |
 Logging into a 4.1 BSD system | |
| Type: | Multitasking, multiuser |
|---|---|
| Creator: | CSRG |
| Architecture: | VAX, theoretically portable |
| This Version: | 4.1 (1981) |
| Date Released: | 1981 |
This version addressed many of the performance shortcomings in 4.0 BSD that were brought up in a VMS vs BSD paper. Many of the changes are outlined in Bug fixes and changes in 4.1bsd. One of the big points of 4.1 is that it supported the VAX-11/750, which became a workhorse favorite of the DoD, which in turn led to DARPA grants to the CSRG to continue developing BSD.
Other features included:
- job control
- automatic kernel config
- vfork()
4.1 BSD, June 1981 4BSD was upgraded to include many performance improvements, support for a new VAX model and autoconfiguration.
Once DARPA was funding the development of BSD, it lead to 2 big improvments from 4.1 to 4.2 which included FFS, and TCP/IP. From what I understand 4.1a includes the BBN stack, but on a 750, it only can perform at 56kb on Ethernet, and maximizes the CPU to 100%, whereas Bill Joy's TCP/IP could get upwards of 700k/sec.
Getting this to run
4.1
A tape image for 4.1 has surfaced on bitsavers, named 4.1_BSD_19810710.zip The bootblock programs do not run under SIMH using the 4.0 BSD strategy, however it is possible to swap tapes when restoring the root slice, and then restoring the tars. Using this modified tape, I've created an installation guide Installing 4.1 BSD on SIMH.
4.1c
There is two tape images on bitsavers 4.1C BSD 1 of 2, and 4.1C BSD 2 of 2. I'm working on trying to install them to SIMH.
Games
These are what is available on the 1981 tape:
aardvark banner ching lib snake adventure bcd cribbage mille snscore advfiles bogdict fish monop trek arithmetic boggle fortune number wump backgammon chess hangman quiz zork
Documents
Bug fixes and changes in 4.1 BSD
Post 4.1 releases
4.1a This was a test release including TCP/IP and the socket interface. It saw a wide release, although it seems to have disappeared.
4.1b This was a test release, used only a Berkley and it includes the new Fast File System, using clustering for much improved performance, and contained the netw networking code.
4.1c 1982/1983 The thrid test release between 4.1BSD and 4.2BSD, it was distributed to about 100 sites and includes most 4.2 features except for the new signal facility.
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