Created
February 20, 2012 13:51
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quick-testing node/v8 memory/object limits
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/* | |
node --max_old_space_size=3000 --prof nodemem.js | |
# --trace_incremental_marking=true --incremental_marking_steps=false | |
node --max_old_space_size=3000 --max_new_space_size=3000 --max_executable_size=1000 --gc_global --prof nodemem.js | |
# --noincremental_marking | |
# --nolazy_sweeping | |
# --never_compact | |
# --gc_global | |
# --gc_interval=100000000 | |
*/ | |
var utilz = require('utilz') | |
var objs = 100000000; | |
var arr = [], a = [] | |
arr.push(a) | |
var start = Date.now() | |
for(var i = 0; i < objs; i++) { | |
a.push({ r: true }) | |
if(i % 1000000 === 0) { | |
console.log(i) | |
a = [] | |
arr.push(a) | |
} | |
} | |
var end = Date.now() | |
var dur = utilz.timeSpan(end - start) | |
var mem = process.memoryUsage() | |
mem.rss = utilz.formatNumber(mem.rss) | |
mem.heapTotal = utilz.formatNumber(mem.heapTotal) | |
mem.heapUsed = utilz.formatNumber(mem.heapUsed) | |
console.log(utilz.formatNumber(objs) + ' objects allocated; rss(' + mem.rss + ') heapTotal(' + | |
mem.heapTotal + ') heapUsed(' + mem.heapUsed + ') in ' + dur) |
Author
youurayy
commented
Feb 20, 2012
node --max_new_space_size=3000 --max_executable_size=1000 --max_old_space_size=3000 \
--prof --noincremental_marking nodemem.js
ticks total nonlib name
24874 32.5% 32.5% v8::internal::MarkingVisitor::VisitPointers
12093 15.8% 15.8% v8::internal::MarkingVisitor::~MarkingVisitor
11064 14.4% 14.4% v8::internal::FixedBodyVisitor<v8::internal::StaticMarkingVisitor, v8::internal::FixedBodyDescriptor<12, 20, 20>, void>::Visit
6719 8.8% 8.8% v8::internal::StaticMarkingVisitor::VisitJSWeakMap
5828 7.6% 7.6% v8::internal::MarkCompactCollector::Prepare
3550 4.6% 4.6% v8::internal::FlexibleBodyVisitor<v8::internal::StaticMarkingVisitor, v8::internal::FixedArray::BodyDescriptor, void>::Visit
2098 2.7% 2.7% v8::internal::FixedBodyVisitor<v8::internal::StaticMarkingVisitor, v8::internal::FixedBodyDescriptor<4, 12, 16>, void>::Visit
1492 1.9% 1.9% v8::internal::ScavengingVisitor<(v8::internal::MarksHandling)0, (v8::internal::LoggingAndProfiling)0>::EvacuateObject<(v8::internal::ScavengingVisitor<(v8::internal::MarksHandling)0, (v8::internal::LoggingAndProfiling)0>::ObjectContents)0, (v8::internal::ScavengingVisitor<(v8::internal::MarksHandling)0, (v8::internal::LoggingAndProfiling)0>::SizeRestriction)0>
787 1.0% 1.0% v8::internal::StaticMarkingVisitor::DataObjectVisitor::Visit
586 0.8% 0.8% v8::internal::MarkCompactCollector::MarkDescriptorArray
541 0.7% 0.7% v8::internal::Heap::CreateInitialMaps
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