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72 lines
2.1 KiB
Plaintext
72 lines
2.1 KiB
Plaintext
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=head1 IDEAS
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One char options not used: F G J K M P Q Y
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Test if -0 works on filenames ending in '\n'
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xargs dropin-replacement.
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Implement the missing --features
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monitor to see which jobs are currently running
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http://code.google.com/p/ppss/
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Accept signal INT instead of TERM to complete current running jobs but
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do not start new jobs. Print out the number of jobs waiting to
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complete on STDERR. Accept sig INT again to kill now. This seems to be
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hard, as all foreground processes get the INT from the shell.
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If there are nomore jobs (STDIN is closed) then make sure to
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distribute the arguments evenly if running -X.
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Distribute jobs to computers with different speeds/number-of-cpu-cores using ssh
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ask the computers how many cpus they have and spawn appropriately
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according to -j setting. Reuse ssh connection (-M and -S)
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Start by porting everything to use sshlogin :.
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SEED=$RANDOM
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ssh -MS /tmp/ssh-%r@%h:%p-$SEED elvis
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rsync --rsh="ssh -S /tmp/ssh-%r@%h:%p-$SEED" gitup elvis:/tmp/
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ssh -S /tmp/ssh-%r@%h:%p-$SEED elvis hostname
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FILE=gpl-3.0.txt
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BASE=gpl-3.0
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$ rsync -z $FILE e:$FILE
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$ ssh e "cat $FILE | bzip2 > $BASE.bz2"
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$ rsync -z e:$BASE.bz2 $BASE.bz2
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$ ssh e "rm $FILE $BASE"
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http://www.semicomplete.com/blog/geekery/distributed-xargs.html?source=rss20
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http://code.google.com/p/ppss/wiki/Manual2
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http://www.gnu.org/software/pexec/
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Where will '>' be run? Local or remote? Remote.
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Parallelize so this can be done:
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mdm.screen find dir -execdir mdm-run cmd {} \;
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Maybe:
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find dir -execdir par$ --communication-file /tmp/comfile cmd {} \;
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=head2 Comfile
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This will put a lock on /tmp/comfile. The number of locks is the number of running commands.
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If the number is smaller than -j then it will start a process in the background ( cmd & ),
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otherwise wait.
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par$ --wait /tmp/comfile will wait until no more locks on the file
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=head2 mutex
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mutex -n -l lockid -m max_locks [command]
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mutex -u lockid
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-l lockfile will lock using the lockid
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-n nonblocking
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-m maximal number of locks (default 1)
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-u unlock
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If command given works like: mutex -l lockfile -n number_of_locks ; command; mutex -u lockfile
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