mirror of
https://git.savannah.gnu.org/git/parallel.git
synced 2024-12-23 05:07:54 +00:00
niceload: Implemented '-q'
This commit is contained in:
Ole Tange
parent
10e4f9c5f8
commit
ded4ad022f
150
src/niceload
150
src/niceload
|
|
@ -36,6 +36,32 @@ if(not defined $::opt_run_mem) { $::opt_run_mem = $::opt_mem; }
|
|||
if(not defined $::opt_start_noswap) { $::opt_start_noswap = $::opt_noswap; }
|
||||
if(not defined $::opt_run_noswap) { $::opt_run_noswap = $::opt_noswap; }
|
||||
|
||||
my $limit = Limit->new();
|
||||
my $process = Process->new($::opt_nice,@ARGV);
|
||||
if(not $::opt_pid) {
|
||||
# Wait until limit is below start_limit and run_limit
|
||||
while($limit->over_start_limit()
|
||||
or
|
||||
($limit->hard() and $limit->over_run_limit())) {
|
||||
$limit->sleep_for_recheck();
|
||||
}
|
||||
}
|
||||
$process->start();
|
||||
while($process->is_running()) {
|
||||
if($limit->over_run_limit()) {
|
||||
$process->suspend();
|
||||
$limit->sleep_for_recheck();
|
||||
if(not $limit->hard()) {
|
||||
$process->resume();
|
||||
$limit->sleep_while_running();
|
||||
}
|
||||
} else {
|
||||
$process->resume();
|
||||
$limit->sleep_while_running();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
sub get_options_from_array {
|
||||
# Run GetOptions on @array
|
||||
# Returns:
|
||||
|
|
@ -77,6 +103,7 @@ sub get_options_from_array {
|
|||
"process|pid|p=s" => \$::opt_pid,
|
||||
"suspend|s=s" => \$::opt_suspend,
|
||||
"recheck|t=s" => \$::opt_recheck,
|
||||
"quote|q" => \$::opt_quote,
|
||||
"help|h" => \$::opt_help,
|
||||
"verbose|v" => \$::opt_verbose,
|
||||
"version|V" => \$::opt_version,
|
||||
|
|
@ -88,11 +115,13 @@ sub get_options_from_array {
|
|||
return @retval;
|
||||
}
|
||||
|
||||
|
||||
sub die_usage {
|
||||
help();
|
||||
exit 1;
|
||||
}
|
||||
|
||||
|
||||
sub help {
|
||||
print q{
|
||||
Usage:
|
||||
|
|
@ -102,6 +131,22 @@ Usage:
|
|||
};
|
||||
}
|
||||
|
||||
|
||||
sub die_bug {
|
||||
my $bugid = shift;
|
||||
print STDERR
|
||||
("$Global::progname: This should not happen. You have found a bug.\n",
|
||||
"Please contact <parallel\@gnu.org> and include:\n",
|
||||
"* The version number: $Global::version\n",
|
||||
"* The bugid: $bugid\n",
|
||||
"* The command line being run\n",
|
||||
"* The files being read (put the files on a webserver if they are big)\n",
|
||||
"\n",
|
||||
"If you get the error on smaller/fewer files, please include those instead.\n");
|
||||
exit(255);
|
||||
}
|
||||
|
||||
|
||||
sub usleep {
|
||||
# Sleep this many milliseconds.
|
||||
my $secs = shift;
|
||||
|
|
@ -109,12 +154,14 @@ sub usleep {
|
|||
select(undef, undef, undef, $secs/1000);
|
||||
}
|
||||
|
||||
|
||||
sub debug {
|
||||
if($::opt_debug) {
|
||||
print STDERR @_;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
sub my_dump {
|
||||
# Returns:
|
||||
# ascii expression of object if Data::Dump(er) is installed
|
||||
|
|
@ -138,6 +185,7 @@ sub my_dump {
|
|||
}
|
||||
}
|
||||
|
||||
|
||||
sub version {
|
||||
# Returns: N/A
|
||||
print join("\n",
|
||||
|
|
@ -152,6 +200,7 @@ sub version {
|
|||
);
|
||||
}
|
||||
|
||||
|
||||
sub multiply_binary_prefix {
|
||||
# Evalualte numbers with binary prefix
|
||||
# 13G = 13*1024*1024*1024 = 13958643712
|
||||
|
|
@ -169,6 +218,7 @@ sub multiply_binary_prefix {
|
|||
return $s;
|
||||
}
|
||||
|
||||
|
||||
sub max {
|
||||
# Returns:
|
||||
# Maximum value of array
|
||||
|
|
@ -182,30 +232,6 @@ sub max {
|
|||
return $max;
|
||||
}
|
||||
|
||||
my $limit = Limit->new();
|
||||
my $process = Process->new($::opt_nice,@ARGV);
|
||||
if(not $::opt_pid) {
|
||||
# Wait until limit is below start_limit and run_limit
|
||||
while($limit->over_start_limit()
|
||||
or
|
||||
($limit->hard() and $limit->over_run_limit())) {
|
||||
$limit->sleep_for_recheck();
|
||||
}
|
||||
}
|
||||
$process->start();
|
||||
while($process->is_running()) {
|
||||
if($limit->over_run_limit()) {
|
||||
$process->suspend();
|
||||
$limit->sleep_for_recheck();
|
||||
if(not $limit->hard()) {
|
||||
$process->resume();
|
||||
$limit->sleep_while_running();
|
||||
}
|
||||
} else {
|
||||
$process->resume();
|
||||
$limit->sleep_while_running();
|
||||
}
|
||||
}
|
||||
|
||||
package Process;
|
||||
|
||||
|
|
@ -222,6 +248,7 @@ sub new {
|
|||
}, ref($class) || $class;
|
||||
}
|
||||
|
||||
|
||||
sub start {
|
||||
# Start the program
|
||||
my $self = shift;
|
||||
|
|
@ -240,12 +267,17 @@ sub start {
|
|||
setpgrp(0,0);
|
||||
::debug("Child pid: $$, pgrp: ",getpgrp $$,"\n");
|
||||
::debug("@{$self->{'command'}}\n");
|
||||
system("@{$self->{'command'}}");
|
||||
if($::opt_quote) {
|
||||
system(@{$self->{'command'}});
|
||||
} else {
|
||||
system("@{$self->{'command'}}");
|
||||
}
|
||||
::debug("Child exit\n");
|
||||
exit;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
use POSIX ":sys_wait_h";
|
||||
|
||||
sub REAPER {
|
||||
|
|
@ -256,12 +288,14 @@ sub REAPER {
|
|||
$SIG{CHLD} = \&REAPER; # install *after* calling waitpid
|
||||
}
|
||||
|
||||
|
||||
sub kill_child_CONT {
|
||||
my $self = $Global::process;
|
||||
::debug("SIGCONT received. Killing $self->{'pid'}\n");
|
||||
kill CONT => -getpgrp($self->{'pid'});
|
||||
}
|
||||
|
||||
|
||||
sub kill_child_TSTP {
|
||||
my $self = $Global::process;
|
||||
::debug("SIGTSTP received. Killing $self->{'pid'} and self\n");
|
||||
|
|
@ -269,6 +303,7 @@ sub kill_child_TSTP {
|
|||
kill STOP => -$$;
|
||||
}
|
||||
|
||||
|
||||
sub kill_child_INT {
|
||||
my $self = $Global::process;
|
||||
::debug("SIGINT received. Killing $self->{'pid'} Exit\n");
|
||||
|
|
@ -276,6 +311,7 @@ sub kill_child_INT {
|
|||
exit;
|
||||
}
|
||||
|
||||
|
||||
sub resume {
|
||||
my $self = shift;
|
||||
if(not $self->{'running'}) {
|
||||
|
|
@ -285,6 +321,7 @@ sub resume {
|
|||
}
|
||||
}
|
||||
|
||||
|
||||
sub suspend {
|
||||
my $self = shift;
|
||||
if($self->{'running'}) {
|
||||
|
|
@ -294,6 +331,7 @@ sub suspend {
|
|||
}
|
||||
}
|
||||
|
||||
|
||||
sub is_running {
|
||||
# The process is dead if none of the pids exist
|
||||
my $self = shift;
|
||||
|
|
@ -342,6 +380,7 @@ sub new {
|
|||
}, ref($class) || $class;
|
||||
}
|
||||
|
||||
|
||||
sub over_run_limit {
|
||||
my $self = shift;
|
||||
my $status = 0;
|
||||
|
|
@ -351,7 +390,6 @@ sub over_run_limit {
|
|||
# 50% available => 1 (2-1)
|
||||
# 10% available => 9 (10-1)
|
||||
my $mem = $self->mem_status();
|
||||
# $status += (::max(1,$self->{'runmem'}/$mem)-1)*10;
|
||||
::debug("Run memory: $self->{'runmem'}/$mem\n");
|
||||
$status += (::max(1,$self->{'runmem'}/$mem)-1);
|
||||
}
|
||||
|
|
@ -389,7 +427,6 @@ sub over_start_limit {
|
|||
# 50% available => 1 (2-1)
|
||||
# 10% available => 9 (10-1)
|
||||
my $mem = $self->mem_status();
|
||||
# $status += (::max(1,$self->{'startmem'}/$mem)-1)*10;
|
||||
::debug("Start memory: $self->{'startmem'}/$mem\n");
|
||||
$status += (::max(1,$self->{'startmem'}/$mem)-1);
|
||||
}
|
||||
|
|
@ -418,46 +455,19 @@ sub over_start_limit {
|
|||
return $self->{'over_start_limit'};
|
||||
}
|
||||
|
||||
sub __over_start_limit {
|
||||
my $self = shift;
|
||||
my $status = 0;
|
||||
if($self->{'startmem'}) {
|
||||
# mem should be between 0-10ish
|
||||
# 100% available => 0 (1-1)
|
||||
# 50% available => 1 (2-1)
|
||||
# 10% available => 9 (10-1)
|
||||
my $mem = $self->mem_status();
|
||||
# $status += (::max(1,$self->{'startmem'}/$mem)-1)*10;
|
||||
$status += (::max(1,$self->{'startmem'}/$mem)-1);
|
||||
}
|
||||
$self->{'over_start_limit'} = $status;
|
||||
if(not $::opt_recheck) {
|
||||
# Wait at least 0.5s. Otherwise niceload might cause the load
|
||||
$self->{'recheck'} = $self->{'factor'} * $self->{'over_start_limit'};
|
||||
}
|
||||
::debug("over_start_limit: $status\n");
|
||||
return $self->{'over_start_limit'};
|
||||
}
|
||||
|
||||
sub __over_general_limit {
|
||||
# Return:
|
||||
# 0 if under all limits
|
||||
# >0 if over limit
|
||||
my $self = shift;
|
||||
my $status = 0;
|
||||
return $status;
|
||||
}
|
||||
|
||||
sub hard {
|
||||
my $self = shift;
|
||||
return $self->{'hard'};
|
||||
}
|
||||
|
||||
|
||||
sub verbose {
|
||||
my $self = shift;
|
||||
return $self->{'verbose'};
|
||||
}
|
||||
|
||||
|
||||
sub sleep_for_recheck {
|
||||
my $self = shift;
|
||||
if($self->{'recheck'} < 0.5) {
|
||||
|
|
@ -472,6 +482,7 @@ sub sleep_for_recheck {
|
|||
::usleep(1000*$self->{'recheck'});
|
||||
}
|
||||
|
||||
|
||||
sub sleep_while_running {
|
||||
my $self = shift;
|
||||
::debug("check in $self->{'runtime'}s\n");
|
||||
|
|
@ -483,6 +494,7 @@ sub sleep_while_running {
|
|||
::usleep(1000*$self->{'runtime'});
|
||||
}
|
||||
|
||||
|
||||
sub load_status {
|
||||
# Returns:
|
||||
# loadavg
|
||||
|
|
@ -497,6 +509,7 @@ sub load_status {
|
|||
return $self->{'load_status'};
|
||||
}
|
||||
|
||||
|
||||
sub load_status_linux {
|
||||
my ($loadavg);
|
||||
if(open(IN,"/proc/loadavg")) {
|
||||
|
|
@ -505,7 +518,7 @@ sub load_status_linux {
|
|||
if($upString =~ m/^(\d+\.\d+)/) {
|
||||
$loadavg = $1;
|
||||
} else {
|
||||
die;
|
||||
::die_bug("proc_loadavg");
|
||||
}
|
||||
close IN;
|
||||
} elsif (open(IN,"uptime|")) {
|
||||
|
|
@ -513,13 +526,14 @@ sub load_status_linux {
|
|||
if($upString =~ m/average.\s*(\d+\.\d+)/) {
|
||||
$loadavg = $1;
|
||||
} else {
|
||||
die;
|
||||
::die_bug("uptime");
|
||||
}
|
||||
close IN;
|
||||
}
|
||||
return $loadavg;
|
||||
}
|
||||
|
||||
|
||||
sub swap_status {
|
||||
# Returns:
|
||||
# (swap in)*(swap out) kb
|
||||
|
|
@ -535,6 +549,7 @@ sub swap_status {
|
|||
return $self->{'swap_status'};
|
||||
}
|
||||
|
||||
|
||||
sub swap_status_linux {
|
||||
my $swap_activity;
|
||||
$swap_activity = "vmstat 1 2 | tail -n1 | awk '{print \$7*\$8}'";
|
||||
|
|
@ -542,6 +557,7 @@ sub swap_status_linux {
|
|||
return qx{ $swap_activity };
|
||||
}
|
||||
|
||||
|
||||
sub mem_status {
|
||||
# Returns:
|
||||
# number of bytes (free+cache)
|
||||
|
|
@ -556,6 +572,7 @@ sub mem_status {
|
|||
return $self->{'mem_status'};
|
||||
}
|
||||
|
||||
|
||||
sub mem_status_linux {
|
||||
# total used free shared buffers cached
|
||||
# Mem: 3366496 2901664 464832 0 179228 1850692
|
||||
|
|
@ -566,6 +583,7 @@ sub mem_status_linux {
|
|||
return $free*1024;
|
||||
}
|
||||
|
||||
|
||||
sub io_status {
|
||||
# Returns:
|
||||
# max percent for all devices
|
||||
|
|
@ -576,21 +594,16 @@ sub io_status {
|
|||
$self->{'io_status'} = io_status_linux();
|
||||
$self->{'io_status_cache_time'} = time;
|
||||
}
|
||||
::debug("io_status: $self->{'io_status'}\n");
|
||||
return $self->{'io_status'};
|
||||
}
|
||||
|
||||
|
||||
sub io_status_linux {
|
||||
# Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
|
||||
# sda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
|
||||
# sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
|
||||
# sdd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
|
||||
# sde 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
|
||||
# sdf 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
|
||||
# dm-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
|
||||
# sdg 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
|
||||
# Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
|
||||
# sda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
|
||||
my @iostat_out = `LANG=C iostat -x 1 2`;
|
||||
# throw away all execpt the last Device:-section
|
||||
# print @iostat_out;
|
||||
my @iostat;
|
||||
for(reverse @iostat_out) {
|
||||
/Device:/ and last;
|
||||
|
|
@ -599,6 +612,3 @@ sub io_status_linux {
|
|||
my $io = ::max(@iostat);
|
||||
return $io/10;
|
||||
}
|
||||
|
||||
# Keep -w happy
|
||||
# = 1;
|
||||
|
|
|
|||
|
|
@ -4,16 +4,19 @@ niceload - slow down a program when the load average is above a certain limit
|
|||
|
||||
=head1 SYNOPSIS
|
||||
|
||||
B<niceload> [-v] [-n nice] [-L load] [-t time] [-s time|-f factor] command
|
||||
|
||||
B<niceload> [-v] [-h] [-n nice] [-l load] [-t time] [-s time|-f factor] -p=PID
|
||||
B<niceload> [-v] [-h] [-n nice] [-I io] [-L load] [-M mem] [-N]
|
||||
[-t time] [-s time|-f factor] ( command | -p PID )
|
||||
|
||||
=head1 DESCRIPTION
|
||||
|
||||
GNU B<niceload> will slow down a program when the load average is
|
||||
above a certain limit. When the limit is reached the program will be
|
||||
suspended for some time. Then resumed again for some time. Then the
|
||||
load average is checked again and we start over.
|
||||
GNU B<niceload> will slow down a program when the load average (or
|
||||
other system activity) is above a certain limit. When the limit is
|
||||
reached the program will be suspended for some time. Then resumed
|
||||
again for some time. Then the load average is checked again and we
|
||||
start over.
|
||||
|
||||
Instead of load average B<niceload> can also look at disk I/O, amount
|
||||
of free memory, or swapping activity.
|
||||
|
||||
If the load is 3.00 then the default settings will run a program
|
||||
like this:
|
||||
|
|
@ -102,6 +105,14 @@ Sets niceness. See B<nice>(1).
|
|||
Process ID of process to suspend.
|
||||
|
||||
|
||||
=item B<--quote>
|
||||
|
||||
=item B<-q>
|
||||
|
||||
Quote the command line. Useful if the command contains chars like *,
|
||||
$, >, and " that should not be interpreted by the shell.
|
||||
|
||||
|
||||
=item B<--run-io> I<iolimit>
|
||||
|
||||
=item B<--ri> I<iolimit>
|
||||
|
|
@ -134,15 +145,6 @@ Start limit. The program will not start until the system is below the
|
|||
limit. See: B<--io>, B<--load>, B<--mem>, B<--noswap>.
|
||||
|
||||
|
||||
|
||||
=item B<--suspend> I<SEC>
|
||||
|
||||
=item B<-s> I<SEC>
|
||||
|
||||
Suspend time. Suspend the command this many seconds when the max load
|
||||
average is reached.
|
||||
|
||||
|
||||
=item B<--soft>
|
||||
|
||||
=item B<-S>
|
||||
|
|
@ -152,6 +154,14 @@ let it run for a second thus only slowing down a process while the
|
|||
system is over one of the given limits. This is the default.
|
||||
|
||||
|
||||
=item B<--suspend> I<SEC>
|
||||
|
||||
=item B<-s> I<SEC>
|
||||
|
||||
Suspend time. Suspend the command this many seconds when the max load
|
||||
average is reached.
|
||||
|
||||
|
||||
=item B<--recheck> I<SEC>
|
||||
|
||||
=item B<-t> I<SEC>
|
||||
|
|
|
|||
Loading…
Reference in a new issue