bugGNU Parallel - build and execute command lines from standard input in parallel - Bugs: bug #37619, niceload --sensor "program |...


bug #37619: niceload --sensor "program | script" job

Submitted by:  Ole Tange <tange>
Submitted on:  Tue Oct 23 16:21:46 2012  
Category: NoneSeverity: 1 - Wish
Item Group: NoneStatus: Fixed
Privacy: PublicAssigned to: Ole Tange <tange>
Open/Closed: Closed

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Mon Dec 3 22:02:37 2012, comment #2:

Fixed in 59a1d67b5

Ole Tange <tange>
Project AdministratorIn charge of this item.
Fri Nov 23 22:17:25 2012, comment #1:

Suspend my_program if my_sensor_prg gives > 10:

niceload -l 10 --sensor my_sensor_prg my_program

Suspend my_program if my_sensor_prg gives < 10:

niceload -l -10 --sensor my_sensor_prg my_program

So if limit is negative it means treat the limit as a lower limit.

Ole Tange <tange>
Project AdministratorIn charge of this item.
Tue Oct 23 16:21:46 2012, original submission:

niceload will run the --sensor program.

The program should print on stdout a number. This number will be treated similar to load.

The sensor program will be run in a loop like:

while(1) {
sleep 1

If the program immediately gives a single value and exits, then this works fine.

If the program continously spits out data continously (vmstat) it will be read nonblocking every second. The latest complete line will be used.

How can we turn on autoflush to avoid buffering 4 kb?

Users are encourage to develop sensor program and the best of these will be distributed with niceload.

Some ideas:

  • Temperature
  • disk io on a given filesystem
Ole Tange <tange>
Project AdministratorIn charge of this item.


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    Follow 2 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Mon Dec 3 22:02:37 2012tangeStatusNone=>Fixed

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