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parallel: Too slow spawning only gives a warning, not an error.
.parallelrc is now read along with .parallel/config. Passes testsuite.
This commit is contained in:
Ole Tange
parent
428faf33b7
commit
87747a44b4
54
src/parallel
54
src/parallel
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@ -852,6 +852,16 @@ B<--silent>. See also B<-t>.
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Print the version GNU B<parallel> and exit.
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=item B<--workdir> I<dir> (unimplemented)
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=item B<-W> I<dir> (unimplemented)
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Files transferred using B<--transfer> and B<--return> will be relative
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to workdir on remote machines, and the command will be executed in
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that dir. The special workdir B<...> will create a workdir i
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B<~/.parallel/workdirs/> on the remote machines and will be removed if
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using B<--cleanup>.
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=item B<--wait> (beta testing)
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@ -1076,7 +1086,7 @@ B<seq 1 30 | parallel date -d '"today -{} days"' +%Y%m%d>
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Based on this we can let GNU B<parallel> generate 10 B<wget>s per day:
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B<I<the above> | parallel -I {o} seq -w 1 10 "|" parallel wget
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I<the above> B<| parallel -I {o} seq -w 1 10 "|" parallel wget
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http://www.website.com/path/to/{o}_{}.jpg>
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=head1 EXAMPLE: Rewriting a for-loop and a while-loop
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@ -1563,6 +1573,16 @@ B<-j> take an argument and thus both need to be at the end of a group.
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=head1 CONFIG FILE
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The file ~/.parallel/config (formerly known as .parallelrc) will be
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read if it exists. Lines starting with '#' will be ignored. It can be
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formatted like the environment variable $PARALLEL, but it is often
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easier to simply put each option on its own line.
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Options on the command line takes precedence over the environment
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variable $PARALLEL which takes precedence over the file
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~/.parallel/config.
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The file ~/.parallel/config will be read if it exists. It should be
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formatted like the environment variable $PARALLEL. Lines starting with
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'#' will be ignored.
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@ -2387,7 +2407,7 @@ sub acquire_semaphore {
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sub parse_options {
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# Returns: N/A
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# Defaults:
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$Global::version = 20100922;
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$Global::version = 20101014;
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$Global::progname = 'parallel';
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$Global::debug = 0;
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$Global::verbose = 0;
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@ -2423,7 +2443,8 @@ sub parse_options {
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}
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# Add options from .parallel/config
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my $parallel_config = $ENV{'HOME'}."/.parallel/config";
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for my $parallel_config ($ENV{'HOME'}."/.parallel/config",
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$ENV{'HOME'}."/.parallelrc") {
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if(-r $parallel_config) {
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open (IN, "<", $parallel_config) || die;
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while(<IN>) {
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@ -2433,6 +2454,7 @@ sub parse_options {
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}
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close IN;
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}
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}
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# Add options from shell variable $PARALLEL
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$ENV{'PARALLEL'} and unshift @ARGV, split/\n/, $ENV{'PARALLEL'};
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Getopt::Long::Configure ("bundling","require_order");
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@ -2463,6 +2485,7 @@ sub parse_options {
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"transfer" => \$::opt_transfer,
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"cleanup" => \$::opt_cleanup,
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"basefile|B=s" => \@::opt_basefile,
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"workdir|W=s" => \$::opt_workdir,
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"halt-on-error|H=s" => \$::opt_halt_on_error,
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"retries=i" => \$::opt_retries,
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"progress" => \$::opt_progress,
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@ -3184,7 +3207,7 @@ sub processes_available_by_system_limit {
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my ($next_command_line, $args_ref);
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my $more_filehandles;
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my $max_system_proc_reached=0;
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my $spawning_too_slow=0;
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my $slow_spawining_warning_printed=0;
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my $time = time;
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my %fh;
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my @children;
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@ -3226,19 +3249,18 @@ sub processes_available_by_system_limit {
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$max_system_proc_reached = 1;
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}
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debug("Time to fork ten procs: ", time-$time, " (processes so far: ", $system_limit,")\n");
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if(time-$time > 2) {
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# It took more than 2 second to fork ten processes. We should stop forking.
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# Let us give the system a little slack
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debug("\nLimiting processes to: $system_limit-10%=".
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(int ($system_limit * 0.9)+1)."\n");
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$system_limit = int ($system_limit * 0.9)+1;
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$spawning_too_slow = 1;
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if(time-$time > 2 and not $slow_spawining_warning_printed) {
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# It took more than 2 second to fork ten processes.
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# Give the user a warning. He can press Ctrl-C if this
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# sucks.
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print STDERR ("Warning: Starting 10 extra processes takes > 2 sec.\n",
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"Consider adjusting -j. Press CTRL-C to stop.\n");
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$slow_spawining_warning_printed = 1;
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}
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} while($system_limit < $wanted_processes
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and (defined $next_command_line or $Global::semaphore)
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and $more_filehandles
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and not $max_system_proc_reached
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and not $spawning_too_slow);
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and not $max_system_proc_reached);
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if($system_limit < $wanted_processes and not $more_filehandles) {
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print STDERR ("Warning: Only enough filehandles to run ",
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$system_limit, " jobs in parallel. ",
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@ -3248,10 +3270,6 @@ sub processes_available_by_system_limit {
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print STDERR ("Warning: Only enough available processes to run ",
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$system_limit, " jobs in parallel.\n");
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}
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if($system_limit < $wanted_processes and $spawning_too_slow) {
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print STDERR ("Warning: Starting 10 extra processes takes > 2 sec.\n",
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"Limiting to ", $system_limit, " jobs in parallel.\n");
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}
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# Cleanup: Close the files
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for (values %fh) { close $_ }
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# Cleanup: Kill the children
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@ -4910,6 +4928,6 @@ sub unlock {
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# Keep perl -w happy
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$Private::control_path = $Semaphore::timeout = $Semaphore::wait =
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$::opt_workdir = $Private::control_path = $Semaphore::timeout = $Semaphore::wait =
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$::opt_skip_first_line = $::opt_shebang = 0 ;
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@ -11,6 +11,8 @@ testsuite: ../src/parallel tests-to-run/* wanted-results/*
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echo | pv -qL 10 || (echo pv is required for testsuite; /bin/false)
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echo | script -c echo -q /dev/null || (echo script is required for testsuite; /bin/false)
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niceload true || (echo niceload is required for testsuite; /bin/false)
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which burnP6 || (echo burnP6 is required for testsuite; /bin/false)
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which timeout || (echo timeout is required for testsuite; /bin/false)
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time sh Start.sh
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date
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@ -1,7 +1,7 @@
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#!/bin/bash
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echo '### Test of --retries'
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seq 1 10 | parallel --retries 2 -v -S 4.3.2.1,: echo
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seq 1 10 | parallel -k --retries 2 -v -S 4.3.2.1,: echo
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echo '### Test of --retries - it should run 13 jobs in total'
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seq 0 12 | parallel --progress -kj100% --retries 1 -S 12/nlv.pi.dk,1/:,parallel@server2 -vq \
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7
testsuite/tests-to-run/test34.sh
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7
testsuite/tests-to-run/test34.sh
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@ -0,0 +1,7 @@
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#!/bin/bash
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echo '### Test too slow spawning'
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(sleep 0.3; seq 1 10 | parallel -j50 burnP6) &
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seq 1 500 | nice nice stdout timeout 10 \
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parallel -j500 "killall -9 burnP6 2>/dev/null ; echo {} >/dev/null"
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killall -9 burnP6
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3
testsuite/wanted-results/test34
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3
testsuite/wanted-results/test34
Normal file
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@ -0,0 +1,3 @@
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### Test too slow spawning
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Warning: Starting 10 extra processes takes > 2 sec.
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Consider adjusting -j. Press CTRL-C to stop.
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