First of all thanks for this wonderful software EasyEngine. Loved the concept.
I’m having a website with almost 15-20K page views per day. I shifted this recently to Amazon EC2 C3 xlarge. OS is Ubuntu 14.04 LTS with 4 CPU and 7.5 GB Ram.
I am experiencing heavy CPU load constantly. I’m attaching two screenshots one with top command output and other giving several graph on EC2 monitor tab plus configuration of nginx and tuning primer output.
Tuning Primer Output
-- MYSQL PERFORMANCE TUNING PRIMER -- - By: Matthew Montgomery - MySQL Version 5.5.38-0ubuntu0.14.04.1 x86_64 Uptime = 2 days 20 hrs 51 min 55 sec Avg. qps = 60 Total Questions = 15116387 Threads Connected = 4 Server has been running for over 48hrs. It should be safe to follow 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 3 out of 15116423 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 = 8 Current threads_cached = 1 Current threads_per_sec = 0 Historic threads_per_sec = 0 Your thread_cache_size is fine MAX CONNECTIONS Current max_connections = 100 Current threads_connected = 7 Historic max_used_connections = 50 The number of used connections is 50% of the configured maximum. Your max_connections variable seems to be fine. INNODB STATUS Current InnoDB index space = 34 M Current InnoDB data space = 25 M Current InnoDB buffer pool free = 36 % Current innodb_buffer_pool_size = 128 M 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 : 358 M Configured Max Per-thread Buffers : 268 M Configured Max Global Buffers : 224 M Configured Max Memory Limit : 492 M Physical Memory : 7.30 G Max memory limit seem to be within acceptable norms KEY BUFFER Current MyISAM index space = 10 M Current key_buffer_size = 16 M Key cache miss rate is 1 : 131520 Key buffer free ratio = 28 % Your key_buffer_size seems to be too high. Perhaps you can use these resources elsewhere QUERY CACHE Query cache is enabled Current query_cache_size = 64 M Current query_cache_used = 58 M Current query_cache_limit = 1 M Current Query cache Memory fill ratio = 90.81 % Current query_cache_min_res_unit = 4 K However, 3246699 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 = 2 M Current read_rnd_buffer_size = 256 K Sort buffer seems to be fine JOINS Current join_buffer_size = 132.00 K You have had 0 queries where a join could not use an index properly Your joins seem to be using indexes properly OPEN FILES LIMIT Current open_files_limit = 1024 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 = 400 tables Current table_definition_cache = 400 tables You have a total of 85 tables You have 108 open tables. The table_cache value seems to be fine TEMP TABLES Current max_heap_table_size = 16 M Current tmp_table_size = 16 M Of 808873 temp tables, 49% 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 = 49 : 1 read_buffer_size seems to be fine TABLE LOCKING Current Lock Wait ratio = 1 : 3621 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'.
Kindly suggest me how to optimize the system.