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parallel: added --sshdelay to slow down ssh logins.

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Ole Tange 2013-01-09 23:00:07 +01:00
parent 05330bf8ea
commit e3e1345aac
1 changed files with 7 additions and 1 deletions
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8
src/parallel
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@ -501,6 +501,7 @@ sub options_hash {
"seqreplace=s" => \$opt::seqreplace,
"jobs|j=s" => \$opt::P,
"delay=f" => \$opt::delay,
"sshdelay=f" => \$opt::sshdelay,
"load=s" => \$opt::load,
"noswap" => \$opt::noswap,
"max-line-length-allowed" => \$opt::max_line_length_allowed,
@ -722,6 +723,10 @@ sub parse_options {
wait_and_exit(0);
}
}
if(not defined $opt::delay) {
# Set --delay to --sshdelay if not set
$opt::delay = $opt::sshdelay;
}
if($opt::tollef and not $opt::gnu and not $opt::plain) {
# Behave like tollef parallel (from moreutils)
$opt::u = 1;
@ -2766,7 +2771,8 @@ sub simultaneous_sshlogin {
my $wanted_processes = shift;
my $sshcmd = $self->sshcommand();
my $serverlogin = $self->serverlogin();
my $cmd = "$sshcmd $serverlogin echo simultaneouslogin </dev/null 2>&1 &"x$wanted_processes;
my $sshdelay = $opt::sshdelay ? "sleep $opt::sshdelay;" : "";
my $cmd = "$sshdelay$sshcmd $serverlogin echo simultaneouslogin </dev/null 2>&1 &"x$wanted_processes;
::debug("Trying $wanted_processes logins at $serverlogin");
open (my $simul_fh, "-|", "($cmd)|grep simultaneouslogin | wc -l") or
::die_bug("simultaneouslogin");