Seeking Help in Optimizing my.cnf

laztrix · Jan 17, 2014

Hello,

I feel like I'm not getting everything out of my server, which is pretty good in my opinion. These are the specs:

Harddisk: 2x 2000 GB SATA 3,5" 7.200 rpm
CPU: AMD Opteron 3280 Octacore
Barebone: Fujitsu PRIMERGY MX130 S2
RAM: 24x Gigabyte RAM

I was advised that I should also looking into optimizing my mysql settings. I had a go at it, made some adjustments. This is my current my.cnf file:

Code:

[mysqld]
local-infile=0
safe-show-database
default-character-set=utf8
default-collation=utf8_general_ci
max_connections = 600
max_user_connections=100
key_buffer_size = 512M
myisam_sort_buffer_size = 64M
read_buffer_size = 1M
table_open_cache = 5000
thread_cache_size = 384
wait_timeout = 20
connect_timeout = 10
tmp_table_size = 256M
max_heap_table_size = 128M
max_allowed_packet = 64M
net_buffer_length = 16384
max_connect_errors = 10
concurrent_insert = 2
#table_lock_wait_timeout only for mysql5
table_lock_wait_timeout = 10
read_rnd_buffer_size = 786432
bulk_insert_buffer_size = 8M
query_cache_limit = 5M
query_cache_size = 128M
query_cache_type = 1
query_prealloc_size = 262144
query_alloc_block_size = 65536
transaction_alloc_block_size = 8192
transaction_prealloc_size = 4096
max_write_lock_count = 8
slow_query_log
external-locking=FALSE
open_files_limit=50000

[mysqldump]
quick
max_allowed_packet = 16M

[isamchk]
key_buffer = 384M
sort_buffer = 384M
read_buffer = 256M
write_buffer = 256M

[myisamchk]
key_buffer = 384M
sort_buffer = 384M
read_buffer = 256M
write_buffer = 256M

#### Per connection configuration ####
sort_buffer_size = 1M
join_buffer_size = 1M
thread_stack = 192K

These are the pictures I've got out of mysqltuner and Tuning Primer:

I appreciate if you could share what exactly I should change & add to my settings.

Thank you in advance.

thinkbot · Jan 18, 2014

It seems like you didnt restart mysql after changing my.cnf
so restart mysql now, and later generate mysqltuner.pl again

and to your current config add
innodb_buffer_pool_size = 300M

laztrix · Jan 18, 2014

thinkbot said:
It seems like you didnt restart mysql after changing my.cnf
so restart mysql now, and later generate mysqltuner.pl again

and to your current config add
innodb_buffer_pool_size = 300M

Thanks for the answer,

I remember that I did, what makes you say I didn't, just curious...

thinkbot · Jan 18, 2014

The results of mysqltuner informes about completely different variables than your my.cnf

laztrix · Jan 18, 2014

I had read an article about a sample my.cnf for 24 GB servers. MySQL won't start now. Your're right...

thinkbot · Jan 18, 2014

remove this from your my.cnf
safe-show-database

its probably the reason why its not starting

laztrix · Jan 18, 2014

thinkbot said:
remove this from your my.cnf
safe-show-database

its probably the reason why its not starting

Didn't start after that either.

thinkbot · Jan 18, 2014

copy last 500 lines of error log here

laztrix · Jan 18, 2014

thinkbot said:
copy last 500 lines of error log here

Cold we rather built a new my.cnf file?

I temporarily used this one to get my sites working again:

Code:

# Example MySQL config file for very large systems.
#
# This is for a large system with memory of 1G-2G where the system runs mainly
# MySQL.
#
# MySQL programs look for option files in a set of
# locations which depend on the deployment platform.
# You can copy this option file to one of those
# locations. For information about these locations, see:
# MySQL :: MySQL 5.6 Reference Manual :: 4.2.3.3 Using Option Files
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.

# The following options will be passed to all MySQL clients
[client]
#password	= your_password
port            = 3306
socket          = /var/lib/mysql/mysql.sock

# Here follows entries for some specific programs

# The MySQL server
[mysqld]
port            = 3306
socket          = /var/lib/mysql/mysql.sock
skip-external-locking
key_buffer_size = 384M
max_allowed_packet = 32M
table_open_cache = 5096
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size = 64M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 8
log-slow-queries
local-infile=0
innodb_file_per_table=1

# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking

# Replication Master Server (default)
# binary logging is required for replication
#log-bin=mysql-bin

# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id	= 1
max_connections = 400
open_files_limit=11354
[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates

[myisamchk]
key_buffer_size = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

thinkbot · Jan 18, 2014

here:

Code:

[client]
#password	= your_password
port            = 3306
socket          = /var/lib/mysql/mysql.sock

[mysqld]
port            = 3306
socket          = /var/lib/mysql/mysql.sock

skip-external-locking
key_buffer_size = 500M
max_allowed_packet = 32M
table_open_cache = 1000
sort_buffer_size = 256K
read_buffer_size = 128K
read_rnd_buffer_size = 256K

myisam_sort_buffer_size = 64M
thread_cache_size = 16

query_cache_type = 1
query_cache_size = 30M
query_cache_limit = 1M

innodb_buffer_pool_size = 1200M

max_heap_table_size = 50M
tmp_table_size = 50M

local-infile=0
innodb_file_per_table=1

max_connections = 300
open_files_limit=25000

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[myisamchk]
key_buffer_size = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

laztrix · Jan 18, 2014

Thank you that worked. I'll post the new suggestions from mysqltuner and tuning-primer after 24 hours

laztrix · Jan 19, 2014

Tuning Primer

Code:

        -- MYSQL PERFORMANCE TUNING PRIMER --
             - By: Matthew Montgomery -

MySQL Version 5.5.34-cll x86_64

Uptime = 1 days 2 hrs 40 min 38 sec
Avg. qps = 89
Total Questions = 8624533
Threads Connected = 3

Warning: Server has not been running for at least 48hrs.
It may not be safe to use these recommendations

To find out more information on how each of these
runtime variables effects performance visit:
http://dev.mysql.com/doc/refman/5.5/en/server-system-variables.html
Visit http://www.mysql.com/products/enterprise/advisors.html
for info about MySQL's Enterprise Monitoring and Advisory Service

SLOW QUERIES
The slow query log is NOT enabled.
Current long_query_time = 10.000000 sec.
You have 28 out of 8624554 that take longer than 10.000000 sec. to complete
Your long_query_time seems to be fine

BINARY UPDATE LOG
The binary update log is NOT enabled.
You will not be able to do point in time recovery
See http://dev.mysql.com/doc/refman/5.5/en/point-in-time-recovery.html

WORKER THREADS
Current thread_cache_size = 16
Current threads_cached = 14
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine

MAX CONNECTIONS
Current max_connections = 300
Current threads_connected = 3
Historic max_used_connections = 52
The number of used connections is 17% of the configured maximum.
Your max_connections variable seems to be fine.

INNODB STATUS
Current InnoDB index space = 425 M
Current InnoDB data space = 913 M
Current InnoDB buffer pool free = 0 %
Current innodb_buffer_pool_size = 1.17 G
Depending on how much space your innodb indexes take up it may be safe
to increase this value to up to 2 / 3 of total system memory

MEMORY USAGE
Max Memory Ever Allocated : 1.75 G
Configured Max Per-thread Buffers : 300 M
Configured Max Global Buffers : 1.70 G
Configured Max Memory Limit : 1.99 G
Physical Memory : 23.40 G
Max memory limit seem to be within acceptable norms

KEY BUFFER
Current MyISAM index space = 417 M
Current key_buffer_size = 500 M
Key cache miss rate is 1 : 330
Key buffer free ratio = 79 %
Your key_buffer_size seems to be fine

QUERY CACHE
Query cache is enabled
Current query_cache_size = 30 M
Current query_cache_used = 25 M
Current query_cache_limit = 1 M
Current Query cache Memory fill ratio = 85.38 %
Current query_cache_min_res_unit = 4 K
However, 581866 queries have been removed from the query cache due to lack of memory
Perhaps you should raise query_cache_size
MySQL won't cache query results that are larger than query_cache_limit in size

SORT OPERATIONS
Current sort_buffer_size = 256 K
Current read_rnd_buffer_size = 256 K
Sort buffer seems to be fine

JOINS
Current join_buffer_size = 132.00 K
You have had 4336 queries where a join could not use an index properly
You have had 110 joins without keys that check for key usage after each row
You should enable "log-queries-not-using-indexes"
Then look for non indexed joins in the slow query log.
If you are unable to optimize your queries you may want to increase your
join_buffer_size to accommodate larger joins in one pass.

Note! This script will still suggest raising the join_buffer_size when
ANY joins not using indexes are found.

OPEN FILES LIMIT
Current open_files_limit = 25000 files
The open_files_limit should typically be set to at least 2x-3x
that of table_cache if you have heavy MyISAM usage.
Your open_files_limit value seems to be fine

TABLE CACHE
Current table_open_cache = 1000 tables
Current table_definition_cache = 400 tables
You have a total of 1287 tables
You have 1000 open tables.
Current table_cache hit rate is 0%
, while 100% of your table cache is in use
You should probably increase your table_cache
You should probably increase your table_definition_cache value.

TEMP TABLES
Current max_heap_table_size = 50 M
Current tmp_table_size = 50 M
Of 133202 temp tables, 27% were created on disk
Perhaps you should increase your tmp_table_size and/or max_heap_table_size
to reduce the number of disk-based temporary tables
Note! BLOB and TEXT columns are not allow in memory tables.
If you are using these columns raising these values might not impact your
ratio of on disk temp tables.

TABLE SCANS
Current read_buffer_size = 128 K
Current table scan ratio = 1689 : 1
read_buffer_size seems to be fine

TABLE LOCKING
Current Lock Wait ratio = 1 : 1812
You may benefit from selective use of InnoDB.
If you have long running SELECT's against MyISAM tables and perform
frequent updates consider setting 'low_priority_updates=1'
If you have a high concurrency of inserts on Dynamic row-length tables
consider setting 'concurrent_insert=ALWAYS'.

MySQL Tuner

Code:

-------- General Statistics --------------------------------------------------
[--] Skipped version check for MySQLTuner script
[OK] Currently running supported MySQL version 5.5.34-cll
[OK] Operating on 64-bit architecture

-------- Storage Engine Statistics -------------------------------------------
[--] Status: +Archive -BDB -Federated +InnoDB -ISAM -NDBCluster
[--] Data in MyISAM tables: 816M (Tables: 646)
[--] Data in InnoDB tables: 913M (Tables: 582)
[--] Data in PERFORMANCE_SCHEMA tables: 0B (Tables: 17)
[--] Data in MEMORY tables: 1M (Tables: 18)
[!!] Total fragmented tables: 149

-------- Security Recommendations  -------------------------------------------
[OK] All database users have passwords assigned

-------- Performance Metrics -------------------------------------------------
[--] Up for: 1d 2h 43m 25s (8M q [89.728 qps], 392K conn, TX: 44B, RX: 2B)
[--] Reads / Writes: 56% / 44%
[--] Total buffers: 1.8G global + 1.0M per thread (300 max threads)
[OK] Maximum possible memory usage: 2.0G (8% of installed RAM)
[OK] Slow queries: 0% (28/8M)
[OK] Highest usage of available connections: 17% (52/300)
[OK] Key buffer size / total MyISAM indexes: 500.0M/417.8M
[OK] Key buffer hit rate: 99.7% (93M cached / 283K reads)
[OK] Query cache efficiency: 78.3% (4M cached / 6M selects)
[!!] Query cache prunes per day: 522946
[OK] Sorts requiring temporary tables: 2% (5K temp sorts / 215K sorts)
[!!] Joins performed without indexes: 4450
[!!] Temporary tables created on disk: 27% (50K on disk / 184K total)
[OK] Thread cache hit rate: 99% (88 created / 392K connections)
[!!] Table cache hit rate: 0% (1K open / 826K opened)
[OK] Open file limit used: 4% (1K/25K)
[OK] Table locks acquired immediately: 99% (3M immediate / 3M locks)
[OK] InnoDB data size / buffer pool: 913.4M/1.2G

-------- Recommendations -----------------------------------------------------
General recommendations:
    Run OPTIMIZE TABLE to defragment tables for better performance
    Enable the slow query log to troubleshoot bad queries
    Adjust your join queries to always utilize indexes
    When making adjustments, make tmp_table_size/max_heap_table_size equal
    Reduce your SELECT DISTINCT queries without LIMIT clauses
    Increase table_cache gradually to avoid file descriptor limits
Variables to adjust:
    query_cache_size (> 30M)
    join_buffer_size (> 128.0K, or always use indexes with joins)
    tmp_table_size (> 50M)
    max_heap_table_size (> 50M)
    table_cache (> 1000)

cPanelMichael · Jan 20, 2014

laztrix said:
Cold we rather built a new my.cnf file?

I temporarily used this one to get my sites working again:

To note, the MySQL error log is located at /var/lib/mysql/$hostname.err by default. You can review the last few lines of this log file if you encounter an issue with MySQL not starting again in the future. It typically outputs a message that makes it relatively easy to determine which value in your /etc/my.cnf (assuming that's the reason) is preventing MySQL from starting.

Thank you.

laztrix · Jan 20, 2014

cPanelMichael said:
To note, the MySQL error log is located at /var/lib/mysql/$hostname.err by default. You can review the last few lines of this log file if you encounter an issue with MySQL not starting again in the future. It typically outputs a message that makes it relatively easy to determine which value in your /etc/my.cnf (assuming that's the reason) is preventing MySQL from starting.

Thank you.

Tahnk you for your note. Do you have any suggestions base on my newly posted reviews?

thinkbot · Jan 20, 2014

OK much better, but

since
[!!] Joins performed without indexes: 4450
[!!] Temporary tables created on disk: 27% (50K on disk / 184K total)
[!!] Table cache hit rate: 0% (1K open / 826K opened)

you need to optimize the queries, especially the ones using temporary tables on disk,
turn on slow queries tracking longer than 0.1
add there

slow_query_log=1
slow_query_log_file=mysql-slow.log
long_query_time=0.1

and you can increase query cache a bit:
query_cache_size = 75M
and this
table_open_cache = 4000

before restarting, generate slow log review of current slow queries (by default longer than 10 s)
like this:
mkdir /root/install
cd /root/install
wget http://percona.com/get/pt-query-digest
chmod +x pt-query-digest
./pt-query-digest /var/lib/mysql/mysql-slow.log > slow.txt
and copy slow.txt here in code brackets

then remove old slow log, rm /var/lib/mysql/mysql-slow.log

and restart mysql

edit: those values should be added in [mysqld] section

laztrix · Jan 20, 2014

Code:

# 360ms user time, 50ms system time, 32.24M rss, 225.12M vsz
# Current date: Mon Jan 20 21:01:38 2014
# Hostname: name of the hostname
# Files: /var/lib/mysql/mysql-slow.log
# Overall: 22 total, 4 unique, 0.40 QPS, 0.01x concurrency _______________
# Time range: 2014-01-18 21:13:22 to 21:14:17
# Attribute          total     min     max     avg     95%  stddev  median
# ============     ======= ======= ======= ======= ======= ======= =======
# Exec time          591ms   147us   275ms    27ms    17ms    69ms     3ms
# Lock time            2ms    27us   244us    79us   159us    51us    60us
# Rows sent          4.97k       0     962  231.55  202.40  231.41  192.76
# Rows examine      11.42k       0   3.83k  531.36  234.30   1.01k  234.30
# Query size         2.87k      68     844  133.55  158.58  177.21   69.19

# Profile
# Rank Query ID           Response time Calls R/Call V/M   Item
# ==== ================== ============= ===== ====== ===== ===============
#    1 0xBD4BC31A0EE1EE7A  0.5020 84.9%     2 0.2510  0.00 INSERT xf_session
#    2 0x92F3B1B361FB0E5B  0.0535  9.0%    16 0.0033  0.00 SELECT wp_options
#    3 0xF8EC4434E0061E89  0.0356  6.0%     2 0.0178  0.00 SELECT wp_terms wp_term_taxonomy
# MISC 0xMISC              0.0003  0.1%     2 0.0002   0.0 <1 ITEMS>

# Query 1: 0 QPS, 0x concurrency, ID 0xBD4BC31A0EE1EE7A at byte 3122 _____
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: all events occurred at 2014-01-18 21:13:48
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count          9       2
# Exec time     84   502ms   227ms   275ms   251ms   275ms    33ms   251ms
# Lock time      3    55us    27us    28us    27us    28us       0    27us
# Rows sent      0       0       0       0       0       0       0       0
# Rows examine   0       0       0       0       0       0       0       0
# Query size    45   1.30k     490     844     667     844  250.32     667
# String:
# Databases    divnet_vt (1/50%), kadinla1_x... (1/50%)
# Hosts        localhost
# Users        divnet_use... (1/50%), kadinla1_x... (1/50%)
# Query_time distribution
#   1us
#  10us
# 100us
#   1ms
#  10ms
# 100ms  ################################################################
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS FROM `kadinla1_xfdb` LIKE 'xf_session'\G
#    SHOW CREATE TABLE `kadinla1_xfdb`.`xf_session`\G
INSERT INTO `xf_session` (`session_id`, `session_data`, `expiry_date`) VALUES ('98c4068052d068967077577451ad89a7', 'a:9:{s:12:\"sessionStart\";i:1390076027;s:2:\"ip\";i:1594422636;s:9:\"userAgent\";s:143:\"Mozilla/5.0 (Linux; U; Android 2.3.6; tr-tr; GT-S5830i Build/GINGERBREAD) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1\";s:7:\"robotId\";s:0:\"\";s:7:\"referer\";s:307:\"http://www.google.com/search?client=ms-android-samsung&hl=tr&v=133247963&biw=320&bih=233&tbm=isch&sa=1&ei=F9_aUrCTE46BhAfgu4DgCg&q=t%C4%B1rnak+modelleri&oq=tirnak&gs_l=mobile-gws-serp.1.3.0l5.141011.162274.0.167335.36.18.0.1.1.1.489.3830.0j1j1j2j6.10.0....0...1c.1.32.mobile-gws-serp..26.10.3743.k21AEL-DkYc\";s:10:\"fromSearch\";s:6:\"google\";s:16:\"previousActivity\";i:0;s:10:\"isIpBanned\";b:0;s:13:\"isDiscouraged\";b:0;}', '1390079627')\G

# Query 2: 0.29 QPS, 0.00x concurrency, ID 0x92F3B1B361FB0E5B at byte 2555
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: 2014-01-18 21:13:22 to 21:14:17
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count         72      16
# Exec time      9    53ms     1ms     5ms     3ms     4ms   940us     3ms
# Lock time     82     1ms    50us   244us    90us   167us    55us    60us
# Rows sent     62   3.09k     197     204  197.88  202.40    3.19  192.76
# Rows examine  32   3.75k     239     246  239.88  234.30       0  234.30
# Query size    38   1.11k      71      71      71      71       0      71
# String:
# Databases    kadinla1_p... (14/87%), annekuzu_g... (2/12%)
# Hosts        localhost
# Users        kadinla1_p... (14/87%), annekuzu_g... (2/12%)
# Query_time distribution
#   1us
#  10us
# 100us
#   1ms  ################################################################
#  10ms
# 100ms
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS FROM `kadinla1_portal` LIKE 'wp_options'\G
#    SHOW CREATE TABLE `kadinla1_portal`.`wp_options`\G
# EXPLAIN /*!50100 PARTITIONS*/
SELECT option_name, option_value FROM wp_options WHERE autoload = 'yes'\G

# Query 3: 0.08 QPS, 0.00x concurrency, ID 0xF8EC4434E0061E89 at byte 446
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: 2014-01-18 21:13:23 to 21:13:47
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count          9       2
# Exec time      6    36ms    18ms    18ms    18ms    18ms    86us    18ms
# Lock time      7   128us    61us    67us    64us    67us     4us    64us
# Rows sent     37   1.88k     962     962     962     962       0     962
# Rows examine  67   7.66k   3.83k   3.83k   3.83k   3.83k       0   3.83k
# Query size    11     332     166     166     166     166       0     166
# String:
# Databases    kadinla1_portal
# Hosts        localhost
# Users        kadinla1_portal
# Query_time distribution
#   1us
#  10us
# 100us
#   1ms
#  10ms  ################################################################
# 100ms
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS FROM `kadinla1_portal` LIKE 'wp_terms'\G
#    SHOW CREATE TABLE `kadinla1_portal`.`wp_terms`\G
#    SHOW TABLE STATUS FROM `kadinla1_portal` LIKE 'wp_term_taxonomy'\G
#    SHOW CREATE TABLE `kadinla1_portal`.`wp_term_taxonomy`\G
# EXPLAIN /*!50100 PARTITIONS*/
SELECT t.*, tt.* FROM wp_terms AS t INNER JOIN wp_term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy IN ('post_tag') AND tt.count > 0 ORDER BY t.name ASC\G

thinkbot · Jan 20, 2014

you generated review of new slow queries, not the old one
# Time range: 2014-01-18 21:13:22 to 21:14:17

old one is lost now, we need to wait several hours than regenerate review of slow queries again

laztrix · Jan 22, 2014

thinkbot said:
you generated review of new slow queries, not the old one
# Time range: 2014-01-18 21:13:22 to 21:14:17

old one is lost now, we need to wait several hours than regenerate review of slow queries again

I swiched to Percona yesterday, one other thing that was suggested to me. Here are the new results:

Code:

        -- MYSQL PERFORMANCE TUNING PRIMER --
             - By: Matthew Montgomery -

MySQL Version 5.5.35-33.0 x86_64

Uptime = 1 days 2 hrs 29 min 27 sec
Avg. qps = 77
Total Questions = 7422704
Threads Connected = 3

Warning: Server has not been running for at least 48hrs.
It may not be safe to use these recommendations

To find out more information on how each of these
runtime variables effects performance visit:
http://dev.mysql.com/doc/refman/5.5/en/server-system-variables.html
Visit http://www.mysql.com/products/enterprise/advisors.html
for info about MySQL's Enterprise Monitoring and Advisory Service

SLOW QUERIES
The slow query log is NOT enabled.
Current long_query_time = 10.000000 sec.
You have 2 out of 7422743 that take longer than 10.000000 sec. to complete
Your long_query_time seems to be fine

BINARY UPDATE LOG
The binary update log is NOT enabled.
You will not be able to do point in time recovery
See http://dev.mysql.com/doc/refman/5.5/en/point-in-time-recovery.html

WORKER THREADS
Current thread_cache_size = 16
Current threads_cached = 13
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine

MAX CONNECTIONS
Current max_connections = 300
Current threads_connected = 3
Historic max_used_connections = 16
The number of used connections is 5% of the configured maximum.
You are using less than 10% of your configured max_connections.
Lowering max_connections could help to avoid an over-allocation of memory
See "MEMORY USAGE" section to make sure you are not over-allocating

INNODB STATUS
Current InnoDB index space = 428 M
Current InnoDB data space = 896 M
Current InnoDB buffer pool free = 1 %
Current innodb_buffer_pool_size = 1.17 G
Depending on how much space your innodb indexes take up it may be safe
to increase this value to up to 2 / 3 of total system memory

MEMORY USAGE
Max Memory Ever Allocated : 1.76 G
Configured Max Per-thread Buffers : 300 M
Configured Max Global Buffers : 1.74 G
Configured Max Memory Limit : 2.04 G
Physical Memory : 23.40 G
Max memory limit seem to be within acceptable norms

KEY BUFFER
Current MyISAM index space = 433 M
Current key_buffer_size = 500 M
Key cache miss rate is 1 : 1845
Key buffer free ratio = 72 %
Your key_buffer_size seems to be fine

QUERY CACHE
Query cache is enabled
Current query_cache_size = 75 M
Current query_cache_used = 61 M
Current query_cache_limit = 1 M
Current Query cache Memory fill ratio = 82.09 %
Current query_cache_min_res_unit = 4 K
However, 159332 queries have been removed from the query cache due to lack of memory
Perhaps you should raise query_cache_size
MySQL won't cache query results that are larger than query_cache_limit in size

SORT OPERATIONS
Current sort_buffer_size = 256 K
Current read_rnd_buffer_size = 256 K
Sort buffer seems to be fine

JOINS
Current join_buffer_size = 132.00 K
You have had 3787 queries where a join could not use an index properly
You have had 80 joins without keys that check for key usage after each row
You should enable "log-queries-not-using-indexes"
Then look for non indexed joins in the slow query log.
If you are unable to optimize your queries you may want to increase your
join_buffer_size to accommodate larger joins in one pass.

Note! This script will still suggest raising the join_buffer_size when
ANY joins not using indexes are found.

OPEN FILES LIMIT
Current open_files_limit = 25000 files
The open_files_limit should typically be set to at least 2x-3x
that of table_cache if you have heavy MyISAM usage.
Your open_files_limit value seems to be fine

TABLE CACHE
Current table_open_cache = 4000 tables
Current table_definition_cache = 400 tables
You have a total of 1289 tables
You have 2509 open tables.
The table_cache value seems to be fine
You should probably increase your table_definition_cache value.

TEMP TABLES
Current max_heap_table_size = 50 M
Current tmp_table_size = 50 M
Of 138265 temp tables, 28% were created on disk
Perhaps you should increase your tmp_table_size and/or max_heap_table_size
to reduce the number of disk-based temporary tables
Note! BLOB and TEXT columns are not allow in memory tables.
If you are using these columns raising these values might not impact your
ratio of on disk temp tables.

TABLE SCANS
Current read_buffer_size = 128 K
Current table scan ratio = 838 : 1
read_buffer_size seems to be fine

TABLE LOCKING
Current Lock Wait ratio = 1 : 2840
You may benefit from selective use of InnoDB.
If you have long running SELECT's against MyISAM tables and perform
frequent updates consider setting 'low_priority_updates=1'
If you have a high concurrency of inserts on Dynamic row-length tables
consider setting 'concurrent_insert=ALWAYS'.

[email protected] [~]#

Code:

 >>  MySQLTuner 1.2.0 - Major Hayden <[email protected]>
 >>  Bug reports, feature requests, and downloads at http://mysqltuner.com/
 >>  Run with '--help' for additional options and output filtering

-------- General Statistics --------------------------------------------------
[--] Skipped version check for MySQLTuner script
[OK] Currently running supported MySQL version 5.5.35-33.0
[OK] Operating on 64-bit architecture

-------- Storage Engine Statistics -------------------------------------------
[--] Status: +Archive -BDB -Federated +InnoDB -ISAM -NDBCluster
[--] Data in MyISAM tables: 886M (Tables: 646)
[--] Data in InnoDB tables: 896M (Tables: 584)
[--] Data in PERFORMANCE_SCHEMA tables: 0B (Tables: 17)
[--] Data in MEMORY tables: 1M (Tables: 18)
[!!] Total fragmented tables: 152

-------- Security Recommendations  -------------------------------------------
[OK] All database users have passwords assigned

-------- Performance Metrics -------------------------------------------------
[--] Up for: 1d 2h 31m 53s (7M q [77.798 qps], 340K conn, TX: 39B, RX: 1B)
[--] Reads / Writes: 61% / 39%
[--] Total buffers: 1.8G global + 1.0M per thread (300 max threads)
[OK] Maximum possible memory usage: 2.1G (8% of installed RAM)
[OK] Slow queries: 0% (2/7M)
[OK] Highest usage of available connections: 5% (16/300)
[OK] Key buffer size / total MyISAM indexes: 500.0M/433.3M
[OK] Key buffer hit rate: 99.9% (73M cached / 39K reads)
[OK] Query cache efficiency: 82.9% (4M cached / 5M selects)
[!!] Query cache prunes per day: 144129
[OK] Sorts requiring temporary tables: 1% (2K temp sorts / 223K sorts)
[!!] Joins performed without indexes: 3869
[!!] Temporary tables created on disk: 28% (53K on disk / 192K total)
[OK] Thread cache hit rate: 99% (16 created / 340K connections)
[!!] Table cache hit rate: 0% (2K open / 417K opened)
[OK] Open file limit used: 7% (1K/25K)
[OK] Table locks acquired immediately: 99% (2M immediate / 2M locks)
[OK] InnoDB data size / buffer pool: 896.7M/1.2G

-------- Recommendations -----------------------------------------------------
General recommendations:
    Run OPTIMIZE TABLE to defragment tables for better performance
    Enable the slow query log to troubleshoot bad queries
    Adjust your join queries to always utilize indexes
    When making adjustments, make tmp_table_size/max_heap_table_size equal
    Reduce your SELECT DISTINCT queries without LIMIT clauses
    Increase table_cache gradually to avoid file descriptor limits
Variables to adjust:
    query_cache_size (> 75M)
    join_buffer_size (> 128.0K, or always use indexes with joins)
    tmp_table_size (> 50M)
    max_heap_table_size (> 50M)
    table_cache (> 4000)

[email protected] [~]#

I had to remove your last suggestions because it wouldn't let me run "mysql_upgrade" command.

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