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72 lines
2 KiB
Plaintext
72 lines
2 KiB
Plaintext
=head1 IDEAS
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Kan vi lave flere ssh'er, hvis vi venter lidt?
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En ssh med 20% loss og 900 ms delay, så kan login nås på 15 sek.
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Test if -0 works on filenames ending in '\n'
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Transfer scriptfile before first job. Remove it when last job done.
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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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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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=head1 options
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One char options not used: F G J K P Q Y
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Skilletegn i sshlogin:
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#=item B<--sshlogin> I<[ncpu/]sshlogin[,[ncpu/]sshlogin[,...]]> (beta testing)
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# Skilletegn:
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# No: "#!&()?\<>|;*'~ shellspecial
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# No: @.- part of user@i.p.n.r i.p.n.r host-name
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# No: , separates different sshlogins
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# No: space Will make it hard to do: 8/server1,server2
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# Maybe: / 8//usr/bin/myssh,//usr/bin/ssh
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# %/=:_^
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=head2 mutex
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mutex -b -n -l lockid -m max_locks [command]
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mutex -u lockid
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-b run command in background
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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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If -b given works like: mutex -l lockfile -n number_of_locks ; (command; mutex -u lockfile)&
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Kan vi finde på lockid som giver mening?
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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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find dir -execdir mutex -j4 -b 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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=head1 Unlikely
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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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