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wlan-lanforge-scripts/l3_video_em.pl

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#!/usr/bin/perl
use strict;
use warnings;
use diagnostics;
use Carp;
$SIG{ __DIE__ } = sub { Carp::confess( @_ ) };
$SIG{ __WARN__ } = sub { Carp::confess( @_ ) };
use Data::Dumper;
# Un-buffer output
$| = 1;
# use lib prepends to @INC, so put lower priority first
# This is before run-time, so cannot condition this with normal 'if' logic.
use lib '/home/lanforge/scripts';
use lib "./";
use LANforge::Endpoint;
use LANforge::Port;
use LANforge::Utils;
use Net::Telnet ();
use Getopt::Long;
use Time::HiRes qw(usleep gettimeofday);
our $has_usleep = (defined &usleep) ? 1 : 0;
my $NA ='NA';
our $resource = 1;
our $quiet = "yes";
our $silent = 0;
our $endp_name = "";
our $speed = "-1";
our $action = "";
our $do_cmd = "NA";
our $lfmgr_host = "localhost";
our $lfmgr_port = 4001;
our $tx_style = "";
our $cx_name = "";
our $tx_side = "B";
our $min_tx = 0;
our $max_tx = -1;
our $buf_size = -1;
our $log_cli = "unset"; # do not set to 0, it turns into logfile "./0"
our $stream_key = undef;
our $quit_when_const = 0;
# https://en.wikipedia.org/wiki/Standard-definition_television
# https://www.adobe.com/devnet/adobe-media-server/articles/dynstream_live/popup.html
# https://en.wikipedia.org/wiki/ISDB-T_International
# https://en.wikipedia.org/wiki/Frame_rate
# https://en.wikipedia.org/wiki/List_of_broadcast_video_formats
# https://blog.forret.com/2006/09/27/hd-720p-1080i-and-1080p/
# Framerate is highly subjective in digital formats, because there are
# variable frame rates dictated by min- and max-frame rate.
our %stream_keys = (
'w' => 0,
'width' => 0,
'x' => 0,
'h' => 1,
'height' => 1,
'y' => 1,
'i' => 2,
'interlaced' => 2,
'audio' => 3,
'audio_bps' => 3,
'video' => 4,
'video_bps' => 4,
'stream' => 5,
'stream_bps' => 5,
'fps' => 6,
'frames' => 6,
'framerate' => 6,
);
our %avail_stream_res = (
# nicname w, h, interlaced, audio, vid bps, tt bps framerate
"sqvga-4:3" => [ 160, 120, 0, 16000, 32000, 48000, 30],
"sqvga-16:9" => [ 160, 90, 0, 16000, 32000, 48000, 30],
"qvga-4:3" => [ 320, 240, 0, 16000, 32000, 48000, 30],
"qvga-16:9" => [ 320, 180, 0, 16000, 32000, 48000, 30],
"qcif-48k-4:3" => [ 144, 108, 0, 16000, 32000, 48000, 30],
"qcif-48k-16:9" => [ 192, 108, 0, 16000, 32000, 48000, 30],
"qcif-96k-4:3" => [ 192, 144, 0, 16000, 80000, 96000, 30],
"qcif-96k-16:9" => [ 256, 144, 0, 16000, 80000, 96000, 30],
"cif" => [ 352, 288, 0, 32000, 268000, 300000, 30],
"cif-300k-4:3" => [ 288, 216, 0, 32000, 268000, 300000, 30],
"cif-300k-16:9" => [ 384, 216, 0, 32000, 268000, 300000, 30],
"cif-500k-4:3" => [ 320, 240, 0, 32000, 468000, 500000, 30],
"cif-500k-16:9" => [ 384, 216, 0, 32000, 468000, 500000, 30],
"d1-800k-4:3" => [ 640, 480, 0, 32000, 768000, 800000, 30],
"d1-800k-16:9" => [ 852, 480, 0, 32000, 768000, 800000, 30],
"d1-1200k-4:3" => [ 640, 480, 0, 32000, 1168000, 1200000, 30],
"d1-1200k-16:9" => [ 852, 480, 0, 32000, 1168000, 1200000, 30],
"hd-1800k-16:9" => [ 1280, 720, 0, 64000, 1736000, 1800000, 59.94],
"hd-2400k-16:9" => [ 1280, 720, 0, 64000, 2272000, 2336000, 59.94],
"108p4:3" => [ 144, 108, 0, 16000, 32000, 48000, 30],
"144p16:9" => [ 192, 144, 0, 16000, 80000, 96000, 30],
"216p4:3" => [ 288, 216, 0, 32000, 268000, 300000, 30],
"216p16:9" => [ 384, 216, 0, 32000, 268000, 300000, 30],
"240p4:3" => [ 320, 240, 0, 32000, 468000, 500000, 30],
"360p4:3" => [ 480, 360, 0, 32000, 768000, 800000, 30],
"480i4:3" => [ 640, 480, 1, 32000, 768000, 800000, 30],
"480p4:3" => [ 640, 480, 0, 32000, 768000, 800000, 30],
"480p16:9" => [ 852, 480, 0, 32000, 1168000, 1200000, 30],
# unadopted standard
#"720i" => [ 1280, 720, 1, 64000, 1736000, 1800000, 30],
# 0.92 megapixels, 2.76MB per frame
"720p" => [ 1280, 720, 0, 64000, 1736000, 1800000, 59.94],
# https://support.google.com/youtube/answer/1722171?hl=en
# h.264 stream rates, SDR quality
"yt-sdr-360p30" => [ 640, 360, 0, 128000, 1000000, 1128000, 30],
"yt-sdr-480p30" => [ 852, 480, 0, 128000, 2500000, 2628000, 30],
"yt-sdr-720p30" => [ 1280, 720, 0, 384000, 5000000, 5384000, 30],
"yt-sdr-1080p30" => [ 1920, 1080, 0, 384000, 8000000, 8384000, 30],
"yt-sdr-1440p30" => [ 2560, 1440, 0, 512000, 16000000, 16512000, 30],
"yt-sdr-2160p30" => [ 3840, 2160, 0, 512000, 40000000, 40512000, 30],
"yt-sdr-360p60" => [ 640, 360, 0, 128000, 1500000, 1628000, 60],
"yt-sdr-480p60" => [ 852, 480, 0, 128000, 4000000, 4128000, 60],
"yt-sdr-720p60" => [ 1280, 720, 0, 384000, 7500000, 7884000, 60],
"yt-sdr-1080p60" => [ 1920, 1080, 0, 384000, 12000000, 12384000, 60],
"yt-sdr-1440p60" => [ 2560, 1440, 0, 512000, 24000000, 24512000, 60],
"yt-sdr-2160p60" => [ 3840, 2160, 0, 512000, 61000000, 61512000, 60],
#"yt-hdr-360p60" => [ 1280, 720, 0, 32000, 1000000, 1800000, 60], # yt unsupported
#"yt-hdr-480p60" => [ 1280, 720, 0, 32000, 1000000, 1800000, 60], # yt unsupported
"yt-hdr-720p30" => [ 1280, 720, 0, 384000, 6500000, 6884000, 30],
"yt-hdr-1080p30" => [ 1920, 1080, 0, 384000, 10000000, 10384000, 30],
"yt-hdr-1440p30" => [ 2560, 1440, 0, 512000, 20000000, 20512000, 30],
"yt-hdr-2160p30" => [ 3840, 2160, 0, 512000, 50000000, 50512000, 30],
"yt-hdr-720p60" => [ 1280, 720, 0, 384000, 9500000, 9884000, 60],
"yt-hdr-1080p60" => [ 1920, 1080, 0, 384000, 15000000, 15384000, 60],
"yt-hdr-1440p60" => [ 2560, 1440, 0, 512000, 30000000, 30512000, 60],
"yt-hdr-2160p60" => [ 3840, 2160, 0, 512000, 75500000, 76012000, 60],
"raw720p30" => [ 1280, 720, 0, 64000, 221120000, 221184000, 30],
"raw720p60" => [ 1280, 720, 0, 64000, 442304000, 442368000, 60],
# frame size 6.2MB
# 1080i60 1920x1080 186MBps
"raw1080i" => [ 1920, 540, 1, 128000, 1486384000, 1486512000, 59.94],
"raw1080i30" => [ 1920, 540, 1, 128000, 1487872000, 1488000000, 30],
"raw1080i60" => [ 1920, 540, 1, 128000, 1487872000, 1488000000, 60],
# 1080p60 1920x1080 373MBps, 6.2Mbps frame size
"raw1080p" => [ 1920, 1080, 0, 128000, 2975872000, 2976000000, 60],
);
our $avail_stream_desc = join(", ", keys(%avail_stream_res));
our $resolution = "yt-sdr-1080p30";
my $list_streams = undef;
our $usage = "$0: # modulates a Layer 3 CX to emulate a video server
# Expects an existing L3 connection
--mgr {hostname | IP}
--mgr_port {ip port}
--tx_style { constant | bufferfill }
--cx_name {name}
--tx_side {A|B} # which side is emulating the server,
# default $::tx_side
--max_tx {speed in bps [K|M|G]} # use this to fill buffer
--min_tx {speed in bps [K|M|G]} # use when not filling buffer, default 0
--buf_size {size[K|M|G]} # fill a buffer at max_tx for this long
--stream_res {$avail_stream_desc}
--list_streams # show stream bps table and exit
# default $resolution
--log_cli {0|1} # use this to record cli commands
--quiet {0|1|yes|no} # print CLI commands
--silent # do not print status output
--quit_when_const # quits connection when constant tx detected
Example:
1) create the L3 connection:
./lf_firemod.pl --resource 1 --action create_endp bursty-udp-A --speed 0 --endp_type lf_udp --port_name eth1 --report_timer 500
./lf_firemod.pl --resource 1 --action create_endp bursty-udp-B --speed 0 --endp_type lf_udp --port_name eth2 --report_timer 500
./lf_firemod.pl --resource 1 --action create_cx --cx_name bursty-udp --cx_endps bursty-udp-A,bursty-udp-B
$0 --cx_name bursty-udp --stream 720p --buf_size 8M --max_tx 40M
";
my $show_help = undef;
our $debug = 0;
$::stream_key = $resolution;
GetOptions
(
'help|h' => \$show_help,
'quiet|q=s' => \$::quiet,
'debug|d' => \$::debug,
'silent+' => \$::silent,
'mgr|m=s' => \$::lfmgr_host,
'mgr_port|p:i' => \$::lfmgr_port,
'log_cli:s{0,1}' => \$log_cli,
'tx_style|style:s' => \$::tx_style,
'cx_name|e=s' => \$::cx_name,
'tx_side|side|s:s' => \$::tx_side,
'max_tx=s' => \$::max_tx,
'min_tx:s' => \$::min_tx,
'buf_size|buf=s' => \$::buf_size,
'stream_res|stream=s' => \$::stream_key,
'list_streams+' => \$list_streams,
'quit_when_const' => \$::quit_when_const,
) || die($!);
if ($show_help) {
print $usage;
exit 0;
}
if ($list_streams) {
print "Predefined Video Streams\n";
print "=" x 72, "\n";
print " Stream W H Audio+Video\n";
my %sortedkeys = ();
foreach my $oldkey (keys(%::avail_stream_res)) {
my $ra_row = $::avail_stream_res{$oldkey};
my $x = 10000000 + int(@$ra_row[$stream_keys{x}]);
my $y = 10000000 + int(@$ra_row[$stream_keys{y}]);
my $b = 10000000000 + int(@$ra_row[$stream_keys{video_bps}]);
my $newkey = "${b}_${x}_${y}_${oldkey}";
$sortedkeys{$newkey} = $oldkey;
}
foreach my $sorted_key (sort(keys(%sortedkeys))) {
my $key = $sortedkeys{$sorted_key};
my $ra_row1 = $::avail_stream_res{$key};
my $x = @$ra_row1[$stream_keys{x}];
my $y = @$ra_row1[$stream_keys{y}];
my $bps = int(@$ra_row1[$stream_keys{stream_bps}]);
my $bps_sum = int(@$ra_row1[$stream_keys{video_bps}]) + int(@$ra_row1[$stream_keys{audio_bps}]);
#my $warning = "";
printf("[ %15s ] %4s x %4s using %8s kbps", $key, $x, $y, ($bps/1000));
if ($bps != $bps_sum) {
print " Invalid BPS $bps, correct to $bps_sum";
}
print "\n";
}
exit 0;
}
if ($::quiet eq "0") {
$::quiet = "no";
}
elsif ($::quiet eq "1") {
$::quiet = "yes";
}
if (defined $log_cli) {
if ($log_cli ne "unset") {
# here is how we reset the variable if it was used as a flag
if ($log_cli eq "") {
$ENV{'LOG_CLI'} = 1;
#print "LOG_CLI now 1\n";
}
else {
$ENV{'LOG_CLI'} = $log_cli;
#print "LOG_CLI now $log_cli\n";
}
}
}
#my @sigkeys = keys %SIG;
#print join(";", sort @sigkeys);
# ABRT;ALRM;BUS;CHLD;CLD;CONT;FPE;HUP;ILL;INT;IO;IOT;KILL;
# NUM32;NUM33;NUM35;NUM36;NUM37;NUM38;NUM39;NUM40;NUM41;NUM42;NUM43;NUM44;NUM45;NUM46;NUM47;NUM48;NUM49;
# NUM50;NUM51;NUM52;NUM53;NUM54;NUM55;NUM56;NUM57;NUM58;NUM59;NUM60;NUM61;NUM62;NUM63;
# PIPE;POLL;PROF;PWR;QUIT;RTMAX;RTMIN;SEGV;STKFLT;STOP;SYS;TERM;TRAP;TSTP;TTIN;TTOU;UNUSED;
# URG;USR1;USR2;VTALRM;WINCH;XCPU;XFSZ;__DIE__;__WARN__
#
# install signal handlers for stopping L3 connections
$SIG{ABRT} = \&cleanexit;
$SIG{HUP} = \&cleanexit;
$SIG{INT} = \&cleanexit;
$SIG{KILL} = \&cleanexit;
$SIG{PIPE} = \&cleanexit; # <- this is how we're terminated, no output message seen
$SIG{SEGV} = \&cleanexit;
$SIG{STOP} = \&cleanexit;
$SIG{TERM} = \&cleanexit;
$SIG{QUIT} = \&cleanexit;
# ========================================================================
sub cleanexit {
my ($msg) = @_;
if (!(defined $msg) || ("" eq $msg)) {
$msg = 'no msg';
}
if ((defined $::cx_name) && ("" ne $::cx_name)) {
if (defined $::utils->telnet) {
print STDERR "\nStopping $::cx_name: $msg\n";
$::utils->doAsyncCmd($::utils->fmt_cmd("set_cx_state", "all", $::cx_name, "STOPPED"));
}
}
exit 0;
}
# ========================================================================
our $est_fill_time_sec = 0;
our $last_fill_time_sec = 0;
sub filltime {
my () = @_;
}
# ========================================================================
sub rxbytes {
my ($endp) = @_;
die ("called rxbytes with no endp name, bye")
unless((defined $endp) && ("" ne $endp));
my @lines = split("\n", $::utils->doAsyncCmd("nc_show_endpoints $endp"));
#Rx Bytes: Total: 0 Time: 60s Cur: 0 0/s
my $bytes = 0;
my @matches = grep {/^\s+Rx Bytes/} @lines;
if (@matches < 1) {
warn "rx-bytes not found for [$endp]\n";
print join("\n> ", @lines), "\n";
return 0;
}
($bytes) = $matches[0] =~ /Rx Bytes:\s+Total: (\d+)/;
if (!(defined $bytes)) {
warn "no rx-bytes match for [$endp]\n";
print "="x72, "\n";
print $matches[0], "\n";
print "="x72, "\n";
print join("\n> ", @lines), "\n";
return 0;
}
return $bytes;
}
# ========================================================================
# look for any TX/RX rates associated with station
sub get_txrx_rate {
my ($lf_host, $lf_port, $rez, $cxnam, $rx_sid) = @_;
my $rxendp = "${cxnam}-${rx_sid}";
my $cmd = "lf_firemod.pl --mgr $lf_host --mgr_port $lf_port -r $rez "
."--action show_endp --endp_name $rxendp --endp_vals EID";
my @lines = `$cmd`;
chomp(@lines);
my @matches = grep {/EID:/} @lines;
return -1 if (@matches < 1);
my ($discard1, $port_eid) = split(/:\s*/, $matches[0]);
my $max_rate = 0;
if (!(defined $port_eid) || ("" eq $port_eid)) {
print STDERR "Unable to determine port eid, unable to update max_tx\n";
return -1;
}
# find tx/rx rate
my ($discard2, $rez2, $portid) = split(/[.]/, $port_eid);
$cmd = "lf_portmod.pl --mgr $lf_host --mp $lf_port --resource $rez2"
." --port_name $portid --show_port Probed-TX-Rate,Probed-RX-Rate";
@lines = `$cmd`;
chomp(@lines);
my $rate = 0;
for my $line (@lines) {
my @hunks = split(/:\s*/, $line);
if (@hunks > 1) {
$rate = $::utils->expand_unit_str($hunks[1]);
}
$max_rate = $rate if ($rate > $max_rate);
}
#if ($max_rate > 0) {
# print "Adjusting max-rate closer to $max_rate\n";
#}
return $max_rate
} # ~get_txrx_rate()
# ========================================================================
sub txbytes {
my ($endp, $check_exit) = @_;
die ("called txbytes with no endp name, bye")
unless((defined $endp) && ("" ne $endp));
my @lines = split("\n", $::utils->doAsyncCmd("nc_show_endpoints $endp"));
#Tx Bytes: Total: 0 Time: 60s Cur: 0 0/s
my $bytes = 0;
my @matches = grep {/^\s+Tx Bytes/} @lines;
if (@matches < 1) {
warn "tx-bytes not found for [$endp]\n";
print join("\n> ", @lines), "\n";
return 0;
}
($bytes) = $matches[0] =~ /Tx Bytes:\s+Total: (\d+)/;
if (!(defined $bytes)) {
warn "no tx-bytes match for [$endp]\n";
print "="x72, "\n";
print $matches[0], "\n";
print "="x72, "\n";
print join("\n> ", @lines), "\n";
return 0;
}
# we want to exit if connection indicates stopped
if ($check_exit) {
@matches = grep { /Endpoint .*?NOT_RUNNING, .*/ } @lines;
if (@matches > 0) {
#print "Endpoint has stopped, exiting\n";
cleanexit("Endpoint has stopped, exiting\n");
}
}
return $bytes;
}
# ========================================================================
# M A I N
# ========================================================================
if ($::quiet eq "1" ) {
$::quiet = "yes";
}
# Configure our utils.
our $utils = new LANforge::Utils();
$::utils->connect($::lfmgr_host, $::lfmgr_port);
die ("Please provide buffer size")
unless((defined $buf_size) && ("" ne $buf_size));
if ($buf_size =~ /[kmg]$/i) {
my($n) = $buf_size =~ /(\d+)/;
if ($buf_size =~ /k$/i) {
$buf_size = $n * 1024;
}
elsif ($buf_size =~ /m$/i) {
$buf_size = $n * 1024 * 1024;
}
elsif ($buf_size =~ /g$/i) {
$buf_size = $n * 1024 * 1024 * 1024;
}
else {
die("Whhhhhuuuuuut?");
}
}
die("Please specify max tx bps")
unless("" ne $::max_tx);
if ($::max_tx =~ /[kmg]$/i) {
my($n) = $::max_tx =~ /(\d+)/;
if ($::max_tx =~ /k$/i) {
$::max_tx = $n * 1000;
}
elsif ($::max_tx =~ /m$/i) {
$::max_tx = $n * 1000 * 1000;
}
elsif ($::max_tx =~ /g$/i) {
$::max_tx = $n * 1000 * 1000 * 1000;
}
else {
die("Whhhhhuuuuuut?");
}
}
if ($::min_tx =~ /[kmg]$/i) {
my($n) = $::min_tx =~ /(\d+)/;
if ($::min_tx =~ /k$/i) {
$::min_tx = $n * 1000;
}
elsif ($::min_tx =~ /m$/i) {
$::min_tx = $n * 1000 * 1000;
}
elsif ($::min_tx =~ /g$/i) {
$::min_tx = $n * 1000 * 1000 * 1000;
}
else {
die("Whhhhhuuuuuut?");
}
}
my $stream_bps = 0;
die("Unknown stream key $::stream_key")
unless(exists $::avail_stream_res{$::stream_key});
$stream_bps = @{$::avail_stream_res{$stream_key}}[$stream_keys{stream_bps}];
# estimated fill time is probably not going to be accurate because
# there's no way to know the txrate between the AP and station.
$::est_fill_time_sec = (8 * $::buf_size) / ($::max_tx * 0.5);
my $drain_time_sec = (8 * $::buf_size) / $stream_bps;
my $drain_wait_sec = $drain_time_sec - $est_fill_time_sec;
if ($drain_wait_sec <= 0) {
my $stream_kbps = $stream_bps / 1000;
print "Warning: constant transmit! Raise max_tx to at least $stream_kbps Kbps\n";
$drain_wait_sec = 0;
}
my $buf_kB = $::buf_size / 1024;
print "Filling $::stream_key $buf_kB KB buffer est ${est_fill_time_sec}sec, empties in ${drain_time_sec} sec\n"
unless($::silent);
die ("Please provide cx_name")
unless((defined $::cx_name) && ("" ne $::cx_name));
# print out choices for now
my @lines = split("\r?\n", $::utils->doAsyncCmd($::utils->fmt_cmd("show_cx", "all", $::cx_name)));
my @matches = grep {/Could not find/} @lines;
die($matches[0])
unless (@matches == 0);
# avoid a stampede of scripts starting at the same time
my $rand_start_delay = rand(7);
if (! $::debug) {
print "Random start delay: $rand_start_delay...\n";
$::utils->sleep_sec($rand_start_delay);
}
print "Stopping and configuring $::cx_name\n" unless($silent);
$::utils->doCmd($::utils->fmt_cmd("set_cx_state", "all", $::cx_name, "STOPPED"));
my $endp = $::cx_name."-".$::tx_side;
@lines = split("\r?\n", $::utils->doAsyncCmd($::utils->fmt_cmd("nc_show_endp", $endp)));
@matches = grep {/ Shelf: 1, Card: /} @lines;
die ("No matches for show endp $endp")
unless($matches[0]);
my ($res, $port, $type) = $matches[0] =~ /, Card: (\d+)\s+Port: (\d+)\s+Endpoint: \d+ Type: ([^ ]+)\s+/;
my $cmd = $::utils->fmt_cmd("add_endp", $endp, 1, $res, $port, $type,
$NA, # ip_port
$NA, # is_rate_bursty
$::min_tx, # min_rate
$::min_tx # max_rate
);
$::utils->doAsyncCmd($cmd);
print "Starting $::cx_name\n" unless($silent);
$::utils->doCmd($::utils->fmt_cmd("set_cx_state", "all", $::cx_name, "RUNNING"));
$cmd = $::utils->fmt_cmd("add_endp", $endp, 1, $res, $port, $type, $NA, $NA, $::max_tx, $::max_tx);
$::utils->doAsyncCmd($cmd);
my @reports = ();
my $fill_starts = 1;
my $fill_stops = 0;
my $tt_bytes = 0;
my $ave_fill_bytes = 0;
my ($starttime_sec, $starttime_usec) = gettimeofday();
$starttime_sec = $starttime_sec + ($starttime_usec / 1000000);
my $begin = $starttime_sec;
my $last_report_sec = $starttime_sec;
my $report_period_sec = 6;
my $check_if_stopped = 0;
my $startbytes = txbytes($endp, $check_if_stopped);
my @delta_reports = ();
do {
($starttime_sec, $starttime_usec) = gettimeofday();
my $starttime = $starttime_sec + ($starttime_usec / 1000000 );
if (($starttime - $begin) > 20) {
$check_if_stopped = 1;
}
my $bytes = 0;
my $num_checks = 0;
my $prev_bytes = 0;
# this might not be
while($bytes < ($buf_size + $startbytes)) {
$num_checks++;
my ($delta1_sec, $delta1_usec) = gettimeofday();
$prev_bytes = $bytes;
$bytes = txbytes($endp, $check_if_stopped);
my ($delta2_sec, $delta2_usec) = gettimeofday();
my $rx_side = ($::tx_side eq "A") ? "B" : "A";
my $updated_txbps = get_txrx_rate($::lfmgr_host, $lfmgr_port, $::resource, $::cx_name, $rx_side);
if ($updated_txbps > 0) {
$::max_tx = $updated_txbps;
$::est_fill_time_sec = (8 * $::buf_size) / ($::max_tx * 0.5);
$drain_wait_sec = $drain_time_sec - $::est_fill_time_sec;
}
$delta1_sec = $delta1_sec + ($delta1_usec/1000000);
$delta2_sec = $delta2_sec + ($delta2_usec/1000000);
#push(@delta_reports, sprintf(" Sent %d B, d %.5f",($bytes-$prev_bytes), ($delta2_sec - $delta1_sec)));
push(@delta_reports, sprintf(" Sent %d B/ %.5f bps;",
($bytes-$prev_bytes),
($bytes-$prev_bytes)/($delta2_sec - $starttime) ));
last if ($bytes > ($buf_size + $startbytes));
# if we're taking unreasonably long, let's just escape
if (($delta2_sec - $starttime) > (12 * $last_fill_time_sec)) {
push(@reports, sprintf("Likely overfill detected, txsec: %.4f", ($delta2_sec - $starttime)));
last;
}
#push(@delta_reports, "z");
$::utils->sleep_ms(200);
#$::utils->sleep_ms( 5 * ($delta2_sec - $delta1_sec));
}
# startbytes is only needed on iteration 0
$startbytes = 0;
my ($finishtime_sec, $finishtime_usec) = gettimeofday();
$finishtime_sec = ($finishtime_sec + ($finishtime_usec / 1000000));
$last_fill_time_sec = $finishtime_sec - $starttime_sec;
$tt_bytes += $bytes;
$drain_wait_sec = $drain_time_sec - $last_fill_time_sec;
push(@reports, sprintf("## drain_wait_seconds: %.4f; est fill: %.4f; actual fill %.4f; dev: %.4f",
$drain_wait_sec, $est_fill_time_sec, $last_fill_time_sec, ($est_fill_time_sec - $last_fill_time_sec )));
push(@reports, "deltas: ".join(',', @delta_reports));
if ($::quit_when_const && ($fill_stops > 1) && ($drain_wait_sec <= 0)) {
# this is a failure condition, we are misconfigured or overloaded
cleanexit("Constant TX Quit: Wait $drain_wait_sec = Drain $drain_time_sec - Fill time $last_fill_time_sec;\n"
.join("\n", @reports));
}
#push(@reports, " deltas: ".join(',', @delta_reports));
@delta_reports = ();
#if ($drain_wait_sec > 0) { # we don't really want to never stop, that's not useful
$cmd = $::utils->fmt_cmd("add_endp", $endp, 1, $res, $port, $type, $NA, $NA, $::min_tx, $::min_tx);
$::utils->doCmd($cmd);
$fill_stops++;
#$ave_fill_bytes = $tt_bytes / $fill_stops;
#push(@reports, "# $fill_starts fills for ave ${ave_fill_bytes}B/fill");
$::utils->sleep_sec($drain_wait_sec);
$startbytes = txbytes($endp, $check_if_stopped);
push(@reports, "Setting max_tx to $::max_tx");
$cmd = $::utils->fmt_cmd("add_endp", $endp, 1, $res, $port, $type, $NA, $NA, $::max_tx, $::max_tx);
$::utils->doCmd($cmd);
$fill_starts++;
#}
if (($finishtime_sec - $last_report_sec) >= $report_period_sec) {
print (join("\n", @reports), "\n");
@reports = ();
$last_report_sec = $finishtime_sec;
}
} while(1);
#
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