Public bug reported:
Ubuntu release:
Description: Ubuntu 16.10
Release: 16.10
Package & version:
esix:
Installed: 1-2ubuntu1
Candidate: 1-2ubuntu1
Version table:
*** 1-2ubuntu1 500
500 http://ca.archive.ubuntu.com/ubuntu yakkety/multiverse amd64
Packages
500 http://ca.archive.ubuntu.com/ubuntu yakkety/multiverse i386 Packages
100 /var/lib/dpkg/status
Expected results:
1. Launch esix in terminal
2. Interact with ESI-X language REPL
Actual results:
1. Launch esix in terminal
2. Interact with ESI-X language REPL
3. Computer CPU usage climbs to 100% as REPL busy-waits for input.
Suggested bug fix:
Modify /usr/share/esix/esix.cfg from:
load esix.bin
run 5400
to
set cpu idle
load esix.bin
run 5400
This will cause the simh PDP-8 emulator that runs the ESI-X binary to
throttle down when it detects a busy loop. It may take 25-30 seconds for
CPU usage to calm down.
Severity:
Low, but rampant CPU usage is a bit rude.
Notes:
1. This is almost certainly an upstream bug, but the Debian maintainer
has abandoned the package.
2. It may be helpful to note in the documentation that esix can be
exited by typing Ctrl-E, then `quit` from the PDP-8 simulator shell.
3. (aside) The esix code is now over 50 years old, making it likely the
oldest running Debian/Ubuntu package ...
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: esix 1-2ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-34.36-generic 4.8.11
Uname: Linux 4.8.0-34-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Jan 30 16:25:49 2017
Dependencies:
gcc-6-base 6.2.0-5ubuntu12
libc6 2.24-3ubuntu2
libgcc1 1:6.2.0-5ubuntu12
libpcap0.8 1.7.4-2
simh 3.8.1-5build1
InstallationDate: Installed on 2015-03-08 (694 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
PackageArchitecture: all
SourcePackage: esix
UpgradeStatus: Upgraded to yakkety on 2016-12-02 (59 days ago)
** Affects: esix (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug yakkety
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https://bugs.launchpad.net/bugs/1660456
Title:
esix package consumes 100% cpu
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