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eliminate last explicit malloc/free for array key name, more performance measurements

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This commit is contained in:
Gary Murakami 2012-04-30 17:21:50 -04:00
parent d176c2a0f3
commit 962c4f2f2e
5 changed files with 374 additions and 269 deletions
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27
bench/exp_series.html
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];

311
bench/exp_series.rb
View File

@ -41,7 +41,10 @@ options = options_with_help.collect{|option|option[0...3]}
GetoptLong.new(*options).each do |opt, arg|
case opt
when '--help'
puts "#{$0} -- #{$description}\nusage: #{$0} [options]\noptions:"
puts "#{$0} -- #{$description}\n"
puts "usage: #{$0} [performance-options] [-- test-unit-options]"
puts "example: #{$0} --mode c --tag with-c-ext -- --verbose --name test_insert"
puts "performance-options:"
options_with_help.each{|option| puts "#{option[0]}#{option[3]}, #{option[1]}#{option[3]}\n\t#{option[4]}"}
exit 0
when '--mode'
@ -77,6 +80,8 @@ def sys_info
end
class TestExpPerformance < Test::Unit::TestCase
setup :setup_test_set
teardown :teardown_test_set
def array_nest(base, level, obj)
return obj if level == 0
@ -90,6 +95,83 @@ class TestExpPerformance < Test::Unit::TestCase
return h
end
def test__array_nest
assert_equal(1, array_nest(2,0,1))
assert_equal([1, 1], array_nest(2,1,1))
assert_equal([[1, 1], [1, 1]], array_nest(2,2,1))
assert_equal([[[1, 1], [1, 1]], [[1, 1], [1, 1]]], array_nest(2,3,1))
assert_equal(1, array_nest(4,0,1))
assert_equal([1, 1, 1, 1], array_nest(4,1,1))
assert_equal([[1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1]], array_nest(4,2,1))
assert_equal(1, array_nest(8,0,1))
assert_equal([1, 1, 1, 1, 1, 1, 1, 1], array_nest(8,1,1))
end
def test__hash_nest
assert_equal(1, hash_nest(2, 0, 1))
assert_equal({"0"=>1, "1"=>1}, hash_nest(2, 1, 1))
assert_equal({"0"=>{"0"=>1, "1"=>1}, "1"=>{"0"=>1, "1"=>1}}, hash_nest(2, 2, 1))
assert_equal({"0"=>{"0"=>{"0"=>1, "1"=>1}, "1"=>{"0"=>1, "1"=>1}},
"1"=>{"0"=>{"0"=>1, "1"=>1}, "1"=>{"0"=>1, "1"=>1}}}, hash_nest(2, 3, 1))
assert_equal(1, hash_nest(4,0,1))
assert_equal({"0"=>1, "1"=>1, "2"=>1, "3"=>1}, hash_nest(4,1,1))
assert_equal({"0"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1},
"1"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1},
"2"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1},
"3"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1}}, hash_nest(4,2,1))
assert_equal(1, hash_nest(8,0,1))
assert_equal({"0"=>1, "1"=>1, "2"=>1, "3"=>1, "4"=>1, "5"=>1, "6"=>1, "7"=>1}, hash_nest(8,1,1))
end
# Performance Tuning Engineering
## Completed
### How to measure and compare pure Ruby versus C extension performance
## Current Work Items
### Profiling of C extension
## Overall Strategy
### Prioritize/Review Ruby 1.9.3, JRuby 1.6.7, Ruby 1.8.7
### Run spectrum of exploratory performance tests
### Graph results with flot in HTML wrapper - http://code.google.com/p/flot/
### Select test for profiling
### Find where time is being spent
### Construct specific performance test
### Iteratively tune specific performance test
### Iterate selection of test for profiling
## Notes
### Start with Create/insert, writing comes first
### Then Read/find, reading comes next. both findOne and find-cursor
### Update is primarily server load with minimal driver load for conditions
### Delete/remove is primarily server load with minimal driver load for conditions
## Benefits
### Performance Improvements
### Knowledge of Ruby driver and techniques
### Perhaps architecture and design improvements
### Lessons transferable to other drivers
## HW Info
### Linux - /proc/cpuinfo
### Mac OS X - sysctl -a hw
def setup_test_set
@conn = Mongo::Connection.new
@conn.drop_database($db_name)
@db = @conn.db($db_name)
@coll = @db.collection($collection_name)
@coll.remove
@results = []
puts
p ({'mode' => $mode , 'hostname' => $hostname, 'osname' => $osname, 'date' => $date, 'tag' => $tag})
puts sys_info
end
def teardown_test_set
# consider inserting the results into a database collection
# Test::Unit::TestCase pollutes STDOUT, so write to a file
File.open("exp_series-#{$date}-#{$tag}.js", 'w+'){|f|
f.puts("#{@results.to_json.gsub(/\[/, "").gsub(/(}[\],])/, "},\n")}") unless @results.empty?
}
@conn.drop_database($db_name)
end
def estimate_iterations(db, coll, doc, setup, teardown)
start_time = Time.now
iterations = 1
@ -117,7 +199,9 @@ class TestExpPerformance < Test::Unit::TestCase
end
def valuate(db, coll, doc, setup, teardown)
@conn.drop_database($db_name) # hack to reduce paging
iterations, etime = estimate_iterations(db, coll, doc, setup, teardown) { yield }
@conn.drop_database($db_name) # hack to reduce paging
utime, rtime = measure_iterations(db, coll, doc, setup, teardown, iterations) { yield }
return [iterations, utime, rtime, etime]
end
@ -193,7 +277,7 @@ class TestExpPerformance < Test::Unit::TestCase
end
def cursor_setup(db, coll, doc, iterations)
(0...iterations).each{insert(coll, doc)}
(0...(iterations - coll.size)).each{insert(coll, doc)}
@cursor = coll.find
@queries = 1
end
@ -203,9 +287,9 @@ class TestExpPerformance < Test::Unit::TestCase
coll.insert(doc) # note that insert stores :_id in doc and subsequent inserts are updates
end
def find_one(coll, doc)
h = coll.find_one
raise "find_one failed" unless h
def insert_safe(coll, doc)
doc.delete(:_id) # delete :_id to insert
coll.insert(doc, :safe => true) # note that insert stores :_id in doc and subsequent inserts are updates
end
def cursor_next(coll, doc)
@ -217,84 +301,23 @@ class TestExpPerformance < Test::Unit::TestCase
end
end
def find_one(coll, doc)
h = coll.find_one
raise "find_one failed" unless h
end
def default_teardown(db, coll)
coll.remove
raise 'coll not removed' if coll.size > 0
end
def cursor_teardown(db, coll)
coll.remove
puts "queries: #{@queries}"
puts "queries: #{@queries}" if @queries > 1
default_teardown(db, coll)
end
def test_array_nest
assert_equal(1, array_nest(2,0,1))
assert_equal([1, 1], array_nest(2,1,1))
assert_equal([[1, 1], [1, 1]], array_nest(2,2,1))
assert_equal([[[1, 1], [1, 1]], [[1, 1], [1, 1]]], array_nest(2,3,1))
assert_equal(1, array_nest(4,0,1))
assert_equal([1, 1, 1, 1], array_nest(4,1,1))
assert_equal([[1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1]], array_nest(4,2,1))
assert_equal(1, array_nest(8,0,1))
assert_equal([1, 1, 1, 1, 1, 1, 1, 1], array_nest(8,1,1))
end
def test_hash_nest # incomplete
assert_equal(1, hash_nest(2, 0, 1))
assert_equal({"0"=>1, "1"=>1}, hash_nest(2, 1, 1))
assert_equal({"0"=>{"0"=>1, "1"=>1}, "1"=>{"0"=>1, "1"=>1}}, hash_nest(2, 2, 1))
assert_equal({"0"=>{"0"=>{"0"=>1, "1"=>1}, "1"=>{"0"=>1, "1"=>1}},
"1"=>{"0"=>{"0"=>1, "1"=>1}, "1"=>{"0"=>1, "1"=>1}}}, hash_nest(2, 3, 1))
assert_equal(1, hash_nest(4,0,1))
assert_equal({"0"=>1, "1"=>1, "2"=>1, "3"=>1}, hash_nest(4,1,1))
assert_equal({"0"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1},
"1"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1},
"2"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1},
"3"=>{"0"=>1, "1"=>1, "2"=>1, "3"=>1}}, hash_nest(4,2,1))
assert_equal(1, hash_nest(8,0,1))
assert_equal({"0"=>1, "1"=>1, "2"=>1, "3"=>1, "4"=>1, "5"=>1, "6"=>1, "7"=>1}, hash_nest(8,1,1))
end
# Performance Tuning Engineering
## Completed
### How to measure and compare pure Ruby versus C extension performance
## Current Work Items
### Profiling of C extension
## Overall Strategy
### Prioritize/Review Ruby 1.9.3, JRuby 1.6.7, Ruby 1.8.7
### Run spectrum of exploratory performance tests
### Graph results with flot in HTML wrapper - http://code.google.com/p/flot/
### Select test for profiling
### Find where time is being spent
### Construct specific performance test
### Iteratively tune specific performance test
### Iterate selection of test for profiling
## Notes
### Start with Create/insert, writing comes first
### Then Read/find, reading comes next. both findOne and find-cursor
### Update is primarily server load with minimal driver load for conditions
### Delete/remove is primarily server load with minimal driver load for conditions
## Benefits
### Performance Improvements
### Knowledge of Ruby driver and techniques
### Perhaps architecture and design improvements
### Lessons transferable to other drivers
## HW Info
### Linux - /proc/cpuinfo
### Mac OS X - sysctl -a hw
def test_zzz_exp_blanket
puts
p ({'mode' => $mode , 'hostname' => $hostname, 'osname' => $osname, 'date' => $date, 'tag' => $tag})
puts sys_info
conn = Mongo::Connection.new
conn.drop_database($db_name)
db = conn.db($db_name)
coll = db.collection($collection_name)
coll.remove
def test_insert
tests = [
# Create/insert
[2, 15, :value_string_size, :null_setup, :insert, :default_teardown],
[2, 15, :key_string_size, :null_setup, :insert, :default_teardown],
[2, 14, :array_size_fixnum, :null_setup, :insert, :default_teardown],
@ -304,34 +327,51 @@ class TestExpPerformance < Test::Unit::TestCase
[8, 4, :array_nest_fixnum, :null_setup, :insert, :default_teardown],
[16, 3, :array_nest_fixnum, :null_setup, :insert, :default_teardown],
[32, 2, :array_nest_fixnum, :null_setup, :insert, :default_teardown],
[2, 15, :hash_nest_fixnum, :null_setup, :insert, :default_teardown ],
[4, 8, :hash_nest_fixnum, :null_setup, :insert, :default_teardown ],
[8, 4, :hash_nest_fixnum, :null_setup, :insert, :default_teardown ],
[16, 4, :hash_nest_fixnum, :null_setup, :insert, :default_teardown ],
[32, 3, :hash_nest_fixnum, :null_setup, :insert, :default_teardown ],
[2, 15, :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
[4, 8, :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
[8, 4, :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
[16, 4, :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
[32, 3, :hash_nest_fixnum, :null_setup, :insert, :default_teardown],
]
tests.each do |base, max_power, generator, setup, operation, teardown|
# consider moving 'method' as permitted by scope
@results += power_test(base, max_power, @db, @coll, method(generator), method(setup), method(operation), method(teardown))
end
end
# synthesized mix, real-world data pending
def test_insert_safe
tests = [
[2, 15, :value_string_size, :null_setup, :insert_safe, :default_teardown],
[2, 15, :key_string_size, :null_setup, :insert_safe, :default_teardown],
[2, 14, :array_size_fixnum, :null_setup, :insert_safe, :default_teardown],
[2, 17, :hash_size_fixnum, :null_setup, :insert_safe, :default_teardown],
[2, 12, :array_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
[4, 6, :array_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
[8, 4, :array_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
[16, 3, :array_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
[32, 2, :array_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
[2, 15, :hash_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
[4, 8, :hash_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
[8, 4, :hash_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
[16, 4, :hash_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
[32, 3, :hash_nest_fixnum, :null_setup, :insert_safe, :default_teardown],
]
tests.each do |base, max_power, generator, setup, operation, teardown|
# consider moving 'method' as permitted by scope
@results += power_test(base, max_power, @db, @coll, method(generator), method(setup), method(operation), method(teardown))
end
end
# Read/find_one
=begin
[2, 15, :value_string_size, :find_one_setup, :find_one, :default_teardown],
[2, 15, :key_string_size, :find_one_setup, :find_one, :default_teardown],
[2, 14, :array_size_fixnum, :find_one_setup, :find_one, :default_teardown],
[2, 17, :hash_size_fixnum, :find_one_setup, :find_one, :default_teardown],
[2, 12, :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[4, 6, :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[8, 4, :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[16, 3, :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[32, 2, :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[2, 15, :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown ],
[4, 8, :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown ],
[8, 4, :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown ],
[16, 4, :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown ],
[32, 3, :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown ],
=end
def xtest_insert_many
# Read/find/next
=begin
end
def xtest_insert_many_safe
end
def test_find
tests = [
[2, 15, :value_string_size, :cursor_setup, :cursor_next, :cursor_teardown],
[2, 15, :key_string_size, :cursor_setup, :cursor_next, :cursor_teardown],
[2, 14, :array_size_fixnum, :cursor_setup, :cursor_next, :cursor_teardown],
@ -341,32 +381,63 @@ class TestExpPerformance < Test::Unit::TestCase
[8, 4, :array_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown],
[16, 3, :array_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown],
[32, 2, :array_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown],
[2, 15, :hash_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown ],
[4, 8, :hash_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown ],
[8, 4, :hash_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown ],
[16, 4, :hash_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown ],
[32, 3, :hash_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown ],
=end
# Update pending
# Delete/remove pending
[2, 15, :hash_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown],
[4, 8, :hash_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown],
[8, 4, :hash_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown],
[16, 4, :hash_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown],
[32, 3, :hash_nest_fixnum, :cursor_setup, :cursor_next, :cursor_teardown],
]
results = []
tests.each do |base, max_power, generator, setup, operation, teardown|
# consider moving 'method' as permitted by scope
results += power_test(base, max_power, db, coll, method(generator), method(setup), method(operation), method(teardown))
@results += power_test(base, max_power, @db, @coll, method(generator), method(setup), method(operation), method(teardown))
end
# consider inserting the results into a database collection
# Test::Unit::TestCase pollutes STDOUT, so write to a file
File.open("exp_series-#{$date}-#{$tag}.js", 'w'){|f|
f.puts("#{results.to_json.gsub(/\[/, "").gsub(/(}[\],])/, "},\n")}")
}
conn.drop_database($db_name)
end
def test_find_one
tests = [
[2, 15, :value_string_size, :find_one_setup, :find_one, :default_teardown],
[2, 15, :key_string_size, :find_one_setup, :find_one, :default_teardown],
[2, 14, :array_size_fixnum, :find_one_setup, :find_one, :default_teardown],
[2, 17, :hash_size_fixnum, :find_one_setup, :find_one, :default_teardown],
[2, 12, :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[4, 6, :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[8, 4, :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[16, 3, :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[32, 2, :array_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[2, 15, :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[4, 8, :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[8, 4, :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[16, 4, :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
[32, 3, :hash_nest_fixnum, :find_one_setup, :find_one, :default_teardown],
]
tests.each do |base, max_power, generator, setup, operation, teardown|
# consider moving 'method' as permitted by scope
@results += power_test(base, max_power, @db, @coll, method(generator), method(setup), method(operation), method(teardown))
end
end
def xtest_update
tests = [
# pending
]
tests.each do |base, max_power, generator, setup, operation, teardown|
# consider moving 'method' as permitted by scope
@results += power_test(base, max_power, @db, @coll, method(generator), method(setup), method(operation), method(teardown))
end
end
def xtest_remove
tests = [
# pending
]
tests.each do |base, max_power, generator, setup, operation, teardown|
# consider moving 'method' as permitted by scope
@results += power_test(base, max_power, @db, @coll, method(generator), method(setup), method(operation), method(teardown))
end
end
# synthesized mix, real-world data pending
end

1
ext/cbson/bson_buffer.h
View File

@ -32,6 +32,7 @@ bson_buffer_t bson_buffer_new(void);
/* Set the max size for this buffer.
* Note: this is not a hard limit. */
void bson_buffer_set_max_size(bson_buffer_t buffer, int max_size);
int bson_buffer_get_max_size(bson_buffer_t buffer);
/* Free the memory allocated for `buffer`.
* Return non-zero on failure. */

16
ext/cbson/cbson.c
View File

@ -139,13 +139,13 @@ static void write_utf8(bson_buffer_t buffer, VALUE string, char check_null) {
#define EXTENDED RE_OPTION_EXTENDED
#endif
/* TODO review malloc versus Ruby Enterprise Edition with tcmalloc */
/* TODO we ought to check that the malloc was successful and raise an exception if not. */
#define ARRAY_KEY_BUFFER_SIZE 10
// use 8^(ARRAY_KEY_BUFFER_SIZE-1) as CPP safe bounds approximation for limit of 10^(ARRAY_KEY_BUFFER_SIZE-1)-1
#define ARRAY_KEY_MAX_CPP (1 << (3 * (ARRAY_KEY_BUFFER_SIZE-1)))
#ifdef _WIN32 || _MSC_VER
#define SCINT(i) (_scprintf("%d", i) + 1)
#define SNPRINTF _snprintf
#else
#define SCINT(i) (snprintf(NULL, 0, "%d", i) + 1)
#define SNPRINTF snprintf
#endif
@ -277,6 +277,7 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
bson_buffer_position length_location, start_position, obj_length;
int items, i;
VALUE* values;
char name[ARRAY_KEY_BUFFER_SIZE];
write_name_and_type(buffer, key, 0x04);
start_position = bson_buffer_get_position(buffer);
@ -288,15 +289,14 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
}
items = RARRAY_LENINT(value);
int vslength = SCINT(items);
char* name = malloc(vslength);
if (items > ARRAY_KEY_MAX_CPP)
rb_raise(rb_eTypeError, "array size too large");
for(i = 0; i < items; i++) {
VALUE key;
SNPRINTF(name, vslength, "%d", i);
SNPRINTF(name, ARRAY_KEY_BUFFER_SIZE, "%d", i);
key = rb_str_new2(name);
write_element_with_id(key, rb_ary_entry(value, i), pack_extra(buffer, check_keys));
}
free(name);
// write null byte and fill in length
SAFE_WRITE(buffer, &zero, 1);
obj_length = bson_buffer_get_position(buffer) - start_position;