代码性能-php(二)

小草博客地址: http://homeway.me/ =>回家的路

The artile is about php cache and mysql speed.

(Today's all code is here http://xiaocao.u.qiniudn.com/work%2F2014-09-06-mysql-vs-cache.zip)

Tool:

Apache Benchmark And Siege (about 'ab' and 'siege'

model:

• insert、select、update x100loop x100get

• insert x200loop x200get

• select x200loop x200get

• update x200loop x200get

Ox01.System Environment

- system

MAC os

Software  OS X 10.9.4 (13E28)

Processor  2.4 GHz Intel Core i5

Memory  8 GB 1600 MHz DDR3

250GB SSD

- environment

xampp 1.8.3

Apache/2.4.9

PHP Version 5.5.11

mysqlnd 5.0.11-dev - 20120503 - (mysql is empty)

Ox02.Code：

cache.php

<?php
require 'src/cache.class.php';
$cache = new SimpleCache();

$cache->cache_path = 'cache/';
$cache->cache_time = 3600;

for ($i=1; $i < 100 ; $i++) { 

    $key = md5( uniqid().time() ) ;
    $date = time();

    //insert
    $save = $cache->set_cache( $key, $data);
    //get
    $get = $cache->get_cache( $key );
    //update
    $update = $cache->set_cache( $key, $data);
}

exit();
?>

cache.class.php is sample cache class， every key create a 'key.data' file, nothing special。

---

mysql.php

<?php

$con = mysql_connect("localhost",$user,$pwd);
if (!$con) {
    die('Could not connect: ' . mysql_error());
}

mysql_select_db('phpcache',$con);

for ($i=1; $i < 100 ; $i++) { 

    $time = time();

    $insert = "INSERT INTO `cache`( `time` ) VALUES ( '$time' )";

    $select = "SELECT * FROM `cache` WHERE `time` = '$time'";

    $times=$time+1;

    $update = "UPDATE `cache` SET `cache`='$times' WHERE `time`='$time'";

    $insert_result = mysql_query($insert);

    $select_result = mysql_query($select);

    $update_result = mysql_query($update);

}
?>

all ready. fire!!

Ox03. TEST1 => insert、select、update x100 Loop x100 GET

first test

ab -n 100 -c 10 http://127.0.0.1/phpcache/cache.php

result:

This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 127.0.0.1 (be patient).....done

Server Software:        Apache/2.4.9
Server Hostname:        127.0.0.1
Server Port:            80

Document Path:          /phpcache/cache.php
Document Length:        27522 bytes

Concurrency Level:      10
Time taken for tests:   3.543 seconds
Complete requests:      100
Failed requests:        0
Write errors:           0
Total transferred:      2773500 bytes
HTML transferred:       2752200 bytes
Requests per second:    28.22 [#/sec] (mean)
Time per request:       354.349 [ms] (mean)
Time per request:       35.435 [ms] (mean, across all concurrent requests)
Transfer rate:          764.36 [Kbytes/sec] received

Connection Times (ms)
          min  mean[+/-sd] median   max
Connect:        0    0   1.1      0      11
Processing:   135  347 138.3    339     730
Waiting:       36  101  44.8     80     204
Total:        136  347 138.5    339     730

Percentage of the requests served within a certain time (ms)
    50%    339
    66%    420
    75%    434
    80%    473
    90%    530
    95%    583
    98%    624
    99%    730
    100%    730 (longest request)

    all 10198 records

ab -n 100 -c 10 http://127.0.0.1/phpcache/mysql.php

####result:

This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 127.0.0.1 (be patient).....done

Server Software:        Apache/2.4.9
Server Hostname:        127.0.0.1
Server Port:            80

Document Path:          /phpcache/mysql.php
Document Length:        0 bytes

Concurrency Level:      10
Time taken for tests:   37.934 seconds
Complete requests:      100
Failed requests:        0
Write errors:           0
Total transferred:      23200 bytes
HTML transferred:       0 bytes
Requests per second:    2.64 [#/sec] (mean)
Time per request:       3793.356 [ms] (mean)
Time per request:       379.336 [ms] (mean, across all concurrent requests)
Transfer rate:          0.60 [Kbytes/sec] received

Connection Times (ms)
          min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       0
Processing:  1229 3790 1623.9   4030    6359
Waiting:     1229 3790 1623.9   4030    6359
Total:       1230 3790 1623.9   4030    6359

Percentage of the requests served within a certain time (ms)
    50%   4030
    66%   4650
    75%   5187
    80%   5793
    90%   6293
    95%   6348
    98%   6356
    99%   6359
    100%   6359 (longest request)

all 10198 records

---

second test（Without clean created file）

cache.php

result:

Concurrency Level:      10
Time taken for tests:   7.518 seconds
Complete requests:      100
Failed requests:        0
Write errors:           0
Total transferred:      23200 bytes
HTML transferred:       0 bytes
Requests per second:    13.30 [#/sec] (mean)
Time per request:       751.756 [ms] (mean)
Time per request:       75.176 [ms] (mean, across all concurrent requests)
Transfer rate:          3.01 [Kbytes/sec] received

Percentage of the requests served within a certain time (ms)
    50%    591
    66%    636
    75%    682
    80%    695
    90%    752
    95%    795
    98%    859
    99%    882
    100%    882 (longest request)

all 19800 records   

mysql.php

result:

Concurrency Level:      10
Time taken for tests:   89.448 seconds
Complete requests:      100
Failed requests:        0
Write errors:           0
Total transferred:      23200 bytes
HTML transferred:       0 bytes
Requests per second:    1.12 [#/sec] (mean)
Time per request:       8944.776 [ms] (mean)
Time per request:       894.478 [ms] (mean, across all concurrent requests)
Transfer rate:          0.25 [Kbytes/sec] received

Connection Times (ms)
          min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       0
Processing:  6474 8939 1506.3   9314   11180
Waiting:     6474 8938 1506.3   9314   11179
Total:       6474 8939 1506.2   9314   11180

Percentage of the requests served within a certain time (ms)
    50%   9314
    66%   9722
    75%  10388
    80%  10701
    90%  11058
    95%  11148
    98%  11167
    99%  11180
    100%  11180 (longest request)

all 20010 records

---

third test（Without clean created file）

cache.php

result:

Concurrency Level:      10
Time taken for tests:   8.563 seconds
Complete requests:      100
Failed requests:        0
Write errors:           0
Total transferred:      23200 bytes
HTML transferred:       0 bytes
Requests per second:    11.68 [#/sec] (mean)
Time per request:       856.292 [ms] (mean)
Time per request:       85.629 [ms] (mean, across all concurrent requests)
Transfer rate:          2.65 [Kbytes/sec] received

Percentage of the requests served within a certain time (ms)
    50%    838
    66%    875
    75%    899
    80%    907
    90%    968
    95%   1007
    98%   1034
    99%   1034
    100%   1034 (longest request)

all 29362 records(->_-> when I get folder info, it`s a litte slow)

mysql.php

result:

Concurrency Level:      10
Time taken for tests:   146.047 seconds
Complete requests:      100
Failed requests:        0
Write errors:           0
Total transferred:      23200 bytes
HTML transferred:       0 bytes
Requests per second:    0.68 [#/sec] (mean)
Time per request:       14604.688 [ms] (mean)
Time per request:       1460.469 [ms] (mean, across all concurrent requests)
Transfer rate:          0.16 [Kbytes/sec] received

Percentage of the requests served within a certain time (ms)
    50%  14514
    66%  14853
    75%  15347
    80%  16788
    90%  18805
    95%  18832
    98%  18841
    99%  18843
    100%  18843 (longest request)

 all 30141 records

---

Ox04. TEST2 => insert x100 Loop x200 GET

cache.php (ab -n 200 -c 10 http://127.0.0.1/phpcache/cache.php)

result:

Concurrency Level:      10
Time taken for tests:   6.775 seconds
Complete requests:      200
Failed requests:        0
Write errors:           0
Total transferred:      46400 bytes
HTML transferred:       0 bytes
Requests per second:    29.52 [#/sec] (mean)
Time per request:       338.728 [ms] (mean)
Time per request:       33.873 [ms] (mean, across all concurrent requests)
Transfer rate:          6.69 [Kbytes/sec] received

Connection Times (ms)
          min  mean[+/-sd] median   max
Connect:        0    0   0.0      0       0
Processing:    87  335  96.7    357     530
Waiting:       87  335  96.4    355     530
Total:         87  335  96.7    357     531

Percentage of the requests served within a certain time (ms)
    50%    357
    66%    385
    75%    401
    80%    409
    90%    436
    95%    456
    98%    478
    99%    523
    100%    531 (longest request)

mysql.php (ab -n 200 -c 10 http://127.0.0.1/phpcache/mysql.php)

Concurrency Level:      10
Time taken for tests:   1.179 seconds
Complete requests:      200
Failed requests:        0
Write errors:           0
Total transferred:      46400 bytes
HTML transferred:       0 bytes 
Requests per second:    169.57 [#/sec] (mean)
Time per request:       58.972 [ms] (mean)
Time per request:       5.897 [ms] (mean, across all concurrent requests)
Transfer rate:          38.42 [Kbytes/sec] received

Connection Times (ms)
          min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       1
Processing:    27   58  36.7     42     226
Waiting:       27   58  36.7     42     226
Total:         28   58  36.7     42     226

Percentage of the requests served within a certain time (ms)
    50%     42
    66%     55
    75%     63
    80%     72
    90%    116
    95%    141
    98%    173
    99%    208
    100%    226 (longest request)

=> From the result, we can see that, insert data into msyql or writer into disk is quickly. And mysql is more quick than disk. Than we can find a way to save time, save cache in a file not create a file for each data.

---

Ox04. TEST3 => select x100 Loop x200 GET(select a does not existed data)

cache.php

result:

Concurrency Level:      10
Time taken for tests:   0.201 seconds
Complete requests:      200
Failed requests:        0
Write errors:           0
Total transferred:      46400 bytes
HTML transferred:       0 bytes
Requests per second:    993.31 [#/sec] (mean)
Time per request:       10.067 [ms] (mean)
Time per request:       1.007 [ms] (mean, across all concurrent requests)
Transfer rate:          225.05 [Kbytes/sec] received

Connection Times (ms)
          min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       1
Processing:     4   10   1.8     10      14
Waiting:        4   10   1.8     10      14
Total:          4   10   1.8     10      14

Percentage of the requests served within a certain time (ms)
    50%     10
    66%     11
    75%     11
    80%     11
    90%     12
    95%     13
    98%     14
    99%     14
    100%     14 (longest request)

so quickly!!

mysql.php

result:

Concurrency Level:      10
Time taken for tests:   70.006 seconds
Complete requests:      200
Failed requests:        0
Write errors:           0
Total transferred:      46400 bytes
HTML transferred:       0 bytes
Requests per second:    2.86 [#/sec] (mean)
Time per request:       3500.306 [ms] (mean)
Time per request:       350.031 [ms] (mean, across all concurrent requests)
Transfer rate:          0.65 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       0
Processing:  3000 3492 230.4   3438    4047
Waiting:     3000 3491 230.4   3438    4047
Total:       3000 3492 230.4   3438    4047

Percentage of the requests served within a certain time (ms)
    50%   3438
    66%   3628
    75%   3679
    80%   3701
    90%   3804
    95%   3898
    98%   4005
    99%   4033
    100%   4047 (longest request)

so slow!!

The results are very clear, using cache to search data is qulcikly than mysql select a lot. So use cache to save some data reselected many times will be more quickly so much.

---

Ox05. TEST4 => update x100 Loop x200 GET

cache.php

result:

Concurrency Level:      10
Time taken for tests:   0.973 seconds
Complete requests:      200
Failed requests:        0
Write errors:           0
Total transferred:      46400 bytes
HTML transferred:       0 bytes
Requests per second:    205.51 [#/sec] (mean)
Time per request:       48.660 [ms] (mean)
Time per request:       4.866 [ms] (mean, across all concurrent requests)
Transfer rate:          46.56 [Kbytes/sec] received

Connection Times (ms)
          min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       1
Processing:     9   47  54.9     23     267
Waiting:        9   47  54.9     23     267
Total:          9   47  54.9     23     267

Percentage of the requests served within a certain time (ms)
    50%     23
    66%     42
    75%     53
    80%     59
    90%    142
    95%    175
    98%    255
    99%    265
    100%    267 (longest request)

mysql.php

result:

Concurrency Level:      10
Time taken for tests:   1.411 seconds
Complete requests:      200
Failed requests:        0
Write errors:           0
Total transferred:      46400 bytes
HTML transferred:       0 bytes
Requests per second:    141.78 [#/sec] (mean)
Time per request:       70.532 [ms] (mean)
Time per request:       7.053 [ms] (mean, across all concurrent requests)
Transfer rate:          32.12 [Kbytes/sec] received

Connection Times (ms)
          min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       0
Processing:    39   70   7.9     68      97
Waiting:       39   70   7.9     68      97
Total:         39   70   8.0     68      97

Percentage of the requests served within a certain time (ms)
    50%     68
    66%     70
    75%     71
    80%     73
    90%     82
    95%     90
    98%     93
    99%     94
    100%     97 (longest request)

From it, so clear. Because when mysql update a data, it must seach id in all data, so it include select.

---

Ox06.Find a solution

As we know, speed is always the most important element in developing a website especially for those high traffic database driven website. You can try to turn on query cache to speed up query.

To speed up query, enable the MySQL query cache, before that you need to set few variables in mysql configuration file (usually is my.cnf or my.ini)

first, set query_cache_type to 1. (There are 3 possible settings: 0 (disable / off), 1 (enable / on) and 2 (on demand).

query-cache-type = 1

second, set query_cache_size to your expected size. I’d prefer to set it at 20MB.

query-cache-size = 20M

So use cache in right time is a batter way to speed your website.

---

some useful link to make your mysql qulickly.

http://coolshell.cn/articles/1846.html

http://soft.chinabyte.com/database/55/12710055.shtml

http://planetcassandra.org/nosql-performance-benchmarks/

---

-By xiaocao

2014-09-05 03:41:13