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# IBM_PROLOG_BEGIN_TAG
# This is an automatically generated prolog.
#
# $Source: src/build/debug/Hostboot/MemStats.pm $
#
# OpenPOWER HostBoot Project
#
# COPYRIGHT International Business Machines Corp. 2011,2014
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied. See the License for the specific language governing
# permissions and limitations under the License.
#
# IBM_PROLOG_END_TAG
use strict;
package Hostboot::MemStats;
use Exporter;
our @EXPORT_OK = ('main');
use constant HEAPMGR_INSTANCE_NAME =>
"Singleton<HeapManager>::instance()::instance";
use constant HEAPMGR_CHUNK_OFFSET => 0;
#use constant HEAPMGR_BIGCHUNK_OFFSET => 0;
use constant HEAPMGR_NUMBER_OF_BUCKETS => 12;
use constant MIN_BUCKET_SIZE => 16;
use constant FIB_START_INCR => 16;
sub main
{
my ($packName, $args) = @_;
my $countchunks = 0;
if (defined $args->{"count"})
{
::userDisplay "counting chunks";
$countchunks = 1;
}
my $showchunks = 0;
if (defined $args->{"show"})
{
::userDisplay "showing chunks";
$showchunks = 1;
}
my ($heap_manager_addr, $symSize) =
::findSymbolAddress(HEAPMGR_INSTANCE_NAME);
my @page_manager_addr =
::findSymbolAddress("Singleton<PageManager>::instance()::instance");
my $free_pages =
::read64 @page_manager_addr;
my $total_pages =
::read64 ($page_manager_addr[0] + 8, 8);
my $free_min =
::read64 ::findSymbolAddress("PageManager::cv_low_page_count");
my $page_coal =
::read64 ::findSymbolAddress("PageManager::cv_coalesce_count");
my $big_heap_pages_used =
::read32 ::findSymbolAddress("HeapManager::cv_largeheap_page_count");
my $big_heap_max =
::read32 ::findSymbolAddress("HeapManager::cv_largeheap_page_max");
my $small_heap_pages_used =
::read32 ::findSymbolAddress("HeapManager::cv_smallheap_page_count");
my $heap_coal =
::read32 ::findSymbolAddress("HeapManager::cv_coalesce_count");
my $heap_free =
::read32 ::findSymbolAddress("HeapManager::cv_free_bytes");
my $heap_free_chunks =
::read32 ::findSymbolAddress("HeapManager::cv_free_chunks");
my $heap_total = $big_heap_pages_used + $small_heap_pages_used;
my $heap_max = $big_heap_max + $small_heap_pages_used;
my $castout_ro =
::read32 ::findSymbolAddress("Block::cv_ro_evict_req");
my $castout_rw =
::read32 ::findSymbolAddress("Block::cv_rw_evict_req");
::userDisplay "===================================================\n";
::userDisplay "MemStats:\n";
::userDisplay " Total pages available: $total_pages\n";
::userDisplay " Free pages: $free_pages\n";
::userDisplay " Free pages Low mark: $free_min\n";
::userDisplay " Page chunks coalesced: $page_coal\n";
::userDisplay "\nHeap:\n";
::userDisplay " Pages used by heap: $heap_total ".
"(B:$big_heap_pages_used,S:$small_heap_pages_used)\n";
::userDisplay " Max. Pages used by heap: $heap_max\n";
::userDisplay " heap free bytes/chunks $heap_free/$heap_free_chunks (valid only after a coalescing)\n";
::userDisplay " Heap chunks coalesced: $heap_coal\n";
::userDisplay "\nVirtual Memory Manager page eviction requests:\n";
::userDisplay " RO page requests: $castout_ro\n";
::userDisplay " RW page requests: $castout_rw\n";
::userDisplay "===================================================\n";
if( $showchunks )
{
::userDisplay "Show Buckets - ";
#Show the entire heap
::userDisplay(sprintf("HeapManager at 0x%X\n",$heap_manager_addr));
my $bucketsize = MIN_BUCKET_SIZE;
my $oldbucketsize = MIN_BUCKET_SIZE;
for (my $bucket = 0; $bucket < HEAPMGR_NUMBER_OF_BUCKETS; $bucket++)
{
my $stackAddr =
::read32($heap_manager_addr + HEAPMGR_CHUNK_OFFSET +
(8 * $bucket) + 4);
::userDisplay(sprintf("%d : stackaddr=0x%.8X\n",
$bucket,$stackAddr) );
showPagesInStack($stackAddr,$bucket,$bucketsize);
my $tmpsize = $bucketsize;
$bucketsize = $bucketsize + $oldbucketsize;
$oldbucketsize = $tmpsize;
}
}
if( $countchunks )
{
::userDisplay "Show Buckets - ";
#Show the entire heap
::userDisplay( sprintf("HeapManager at 0x%X\n",$heap_manager_addr) );
my $bucketsize = MIN_BUCKET_SIZE;
my $oldbucketsize = MIN_BUCKET_SIZE;
for (my $bucket = 0; $bucket < HEAPMGR_NUMBER_OF_BUCKETS; $bucket++)
{
my $stackAddr =
::read32($heap_manager_addr + HEAPMGR_CHUNK_OFFSET +
(8 * $bucket) + 4);
my $numchunks = countChunks($stackAddr);
::userDisplay(
sprintf("Bucket %d(=%d) has %d chunks = %d bytes\n",
$bucket,$bucketsize,$numchunks,
$bucketsize*$numchunks));
my $tmpsize = $bucketsize;
$bucketsize = $bucketsize + $oldbucketsize;
$oldbucketsize = $tmpsize;
}
}
}
sub helpInfo
{
my %info = (
name => "MemStats",
intro => ["Displays Hostboot memory usage information."],
);
}
sub showPagesInStack
{
my $stack = shift;
my $bucket = shift;
my $bucketsize = shift;
::userDisplay(sprintf "..stack=0x%.8X-0x%.8X : %d=%d bytes\n",
$stack,$stack+$bucketsize,$bucket,$bucketsize);
return 0 if (0 == $stack);
return 1 + showPagesInStack(::read64($stack+8),$bucket,$bucketsize);
}
sub countChunks
{
my $stack = shift;
return 0 if (0 == $stack);
return 1 + countChunks(::read64($stack+8));
}
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