busbw.prl
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#!/usr/local/bin/perl5 -w
#
# Copyright (C) 1996-1998 by the Board of Trustees
# of Leland Stanford Junior University.
#
# This file is part of the SimOS distribution.
# See LICENSE file for terms of the license.
#
$inputFile = shift;
if (!defined($inputFile)) {
$inputFile = "cpu.log";
}
if (0) {
@fields = ('DUMMY', 'MEM',
'COUNT_IGETS', 'COUNT_LLGETS', 'COUNT_DMAGETS', 'COUNT_DGETS',
'COUNT_DMAGETXS', 'COUNT_GETXS', 'COUNT_SCUPGRADES', 'COUNT_UPGRADES',
'COUNT_WRITEBACKS', 'COUNT_REPLHINTS',
'COUNT_UNCACHEDWRITES', 'COUNT_UNCACHEDACCWRITES', 'COUNT_UNCACHEDREADS',
'COUNT_INVALORDNGRADESENT',
'COUNT_NAKS',
'COUNT_REMOTEDIRTY',
'COUNT_EXCLUSIVEONSHARED',
'COUNT_MEMORYACCESS',
'COUNT_DRAMBUSY');
$i = 0;
foreach $field (@fields) {
$pos{$field} = $i++;
}
}
open(LOG,$inputFile);
for $i (0..16) {
for $j (0..30) {
$prevCommon[$i][$j] = 0;
$prevBusUma[$i][$j] = 0;
$sumBusUma[$j] = 0;
$sumCommon[$j] = 0;
}
}
sub PrintRes {
#
# figure out bandwidth
#
$count{'get'} = ($sumCommon[$posCommon{'IGETS'}] +
$sumCommon[$posCommon{'DGETS'}] +
$sumCommon[$posCommon{'GETXS'}] +
$sumCommon[$posCommon{'LLGETS'}] +
$sumCommon[$posCommon{'DMAGETS'}] +
$sumCommon[$posCommon{'DMAGETXS'}]);
$count{'victimhits'} = $sumBusUma[$posBusUma{'GET_WBBUF'}];
$count{'wb'} = $sumCommon[$posCommon{'WRITEBACKS'}];
$count{'upg'} = ($sumCommon[$posCommon{'UPGRADES'}] +
$sumCommon[$posCommon{'SCUPGRADES'}] -
$sumBusUma[$posBusUma{'UPG_WBBUF'}]);
$count{'merges'} = $sumBusUma[$posBusUma{'MERGES'}];
$count{'memAccess'} = ($sumCommon[$posCommon{'MEMORYACCESS'}]);
$count{'data'} = ($count{'get'}-$count{'merges'} - $count{'victimhits'});
$count{'busData'} = $sumBusUma[$posBusUma{'BUS_GETRQST'}] +
$sumBusUma[$posBusUma{'BUS_GETREPLY'}];
$count{'busWB'} = $sumBusUma[$posBusUma{'BUS_WB'}];
$count{'busUPG'} = $sumBusUma[$posBusUma{'BUS_UPG'}];
$count{'busIdle'} = $sumBusUma[$posBusUma{'BUS_IDLE'}];
$count{'busDiff'} = (4*1024*1024) -
($count{'busData'} + $count{'busWB'} +
$count{'busUPG'} + $count{'busIdle'});
###
### now, some normalization. Assume 4*1024*1024 cycles
### between calls
###
$occup{'data'} = ($count{'data'}) * 2 *
($occupancy{'arb'} + $occupancy{'trans'});
$occup{'wb'} = $count{'wb'} *
($occupancy{'arb'} + $occupancy{'trans'});
$occup{'upg'} = $count{'upg'} *
($occupancy{'arb'} + $occupancy{'trans'});
$occup{'total'} = $occup{'data'} +$occup{'wb'}+$occup{'upg'};
foreach $a ('busData','busWB','busUPG','busDiff','busIdle') {
printf("%s=%6.1f\%\t", $a, 100.0 *
$count{$a} / (4*1024*1024));
}
$time = 4* 1024 * 1024 / $config{'CPU.Clock'};
$norm = $config{'CACHE.2Level.L2Line'} / $time;
printf(" | GET %6.0f MB/s WB %6.0f MB/s Merges=%6.0f\% \n",
$norm * $count{'data'},
$norm * $count{'wb'},
($count{'data'}? 100 * $count{'merges'} / $count{'data'}:0));
}
while(<LOG>) {
if (/MACHINE (\S+)\t(\S+)/) {
$config{$1} = $2;
}
if (/PARAM (\S+) (\S+)/) {
print "XXX config $1 : $2 \n";
$config{$1} = $2;
}
if (/MEMFields/) {
print "MEMFields found \n";
@arr = split;
for $i (1..$#arr) {
$posCommon{$arr[$i]} = $i+1;
}
}
if (/MEMBUSUMAFields/) {
print "MEMBUSUMA found \n";
@arr = split;
for $i (1..$#arr) {
$posBusUma{$arr[$i]} = $i+1;
}
}
if (/MEMSYS: BusUma - arbitrate: (\d+), transfer: (\d+), memory: (\d+)/){
$occupancy{'arb'} = $1;
$occupancy{'trans'} = $2;
$occupancy{'mem'} = $3;
# print "YYY $1 $2 $3 \n";
}
if (/^MEM /) {
@arr = split;
for $i (2..$#arr) {
$sumCommon[$i] += $arr[$i] - $prevCommon[$arr[1]][$i];
$prevCommon[$arr[1]][$i] = $arr[$i];
}
}
if (/^MEMBUSUMA /) {
@arr = split;
for $i (2..$#arr) {
$sumBusUma[$i] += $arr[$i] - $prevBusUma[$arr[1]][$i];
$prevBusUma[$arr[1]][$i] = $arr[$i];
}
if ($arr[1]==$config{'MEMSYS.BusUma.NumMemories'}-1) {
PrintRes();
for $i (0..30) {
$sumCommon[$i] = 0;
$sumBusUma[$i] = 0;
}
}
}
}