Slow response time due queries

[Jens Meier]

Hello community,

I've got a problem with a MySQL database. The response time of the queries is slow. The queries are optimized to use the existing indexes.
On my test pc the MySQL server is running on a windows 7 vmware. The vmware runs on a usb 3.0 hardisk. The queries are fast when using this database.

The problematic database runs on a windows 2012 r2 server (virtualized with Hyper-V). The host system has 32 GB RAM, 15k SAS harddisks and a quad core xeon cpu. There are now other virtualized machines on the host system.

I took some time to google and I tried some adjustments, but I had no success. The response of the most queries on the virtualized server is 1 - 3 seconds slower than on my little test system.


MySQL: 5.6 CE
Connection via .NET-Connector (localhost).

Could you please take a look at my configuration? It would be awesome if you could give me some advices.
The database will be used more for reading than writing.


SHOW VARIABLES LIKE '%buffer%':
---------------------------------------------
"Variable_name" "Value"
"bulk_insert_buffer_size" "8388608"
"innodb_buffer_pool_dump_at_shutdown" "OFF"
"innodb_buffer_pool_dump_now" "OFF"
"innodb_buffer_pool_filename" "ib_buffer_pool"
"innodb_buffer_pool_instances" "8"
"innodb_buffer_pool_load_abort" "OFF"
"innodb_buffer_pool_load_at_startup" "OFF"
"innodb_buffer_pool_load_now" "OFF"
"innodb_buffer_pool_size" "878706688"
"innodb_change_buffer_max_size" "25"
"innodb_change_buffering" "all"
"innodb_log_buffer_size" "9437184"
"innodb_sort_buffer_size" "1048576"
"join_buffer_size" "262144"
"key_buffer_size" "8388608"
"myisam_sort_buffer_size" "262144000"
"net_buffer_length" "16384"
"preload_buffer_size" "32768"
"read_buffer_size" "65536"
"read_rnd_buffer_size" "262144"
"sort_buffer_size" "262144"
"sql_buffer_result" "OFF"



my.ini:
---------------------------------------------
[client]
no-beep
port=3306

[mysql]
default-character-set=utf8

[mysqld]
port=3306
datadir="D:/MySQL/Data\"
character-set-server=utf8
default-storage-engine=INNODB
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
log-output=FILE
general-log=1
general_log_file="TERM1.log"
slow-query-log=1
slow_query_log_file="TERM1-slow.log"
long_query_time=10
log-error="TERM1.err"
max_connections=1500
query_cache_size=200M
table_open_cache=2000
tmp_table_size=129M
thread_cache_size=10
myisam_max_sort_file_size=100G
myisam_sort_buffer_size=248M
key_buffer_size=10M
read_buffer_size=64K
read_rnd_buffer_size=256K
sort_buffer_size=256K
innodb_data_home_dir="D:/MySQL/Data/"
innodb_additional_mem_pool_size=48M
innodb_flush_log_at_trx_commit=2
innodb_log_buffer_size=16M
innodb_buffer_pool_size=4G
innodb_log_file_size=128M
innodb_thread_concurrency=8
innodb_autoextend_increment=64
innodb_buffer_pool_instances=8
innodb_concurrency_tickets=5000
innodb_old_blocks_time=1000
innodb_open_files=300
innodb_stats_on_metadata=0
innodb_file_per_table=1
innodb_checksum_algorithm=0
back_log=80
flush_time=0
join_buffer_size=256K
max_allowed_packet=16M
max_connect_errors=100
open_files_limit=4161
query_cache_type=2
sort_buffer_size=256K
table_definition_cache=1400
binlog_row_event_max_size=8K
sync_master_info=10000
sync_relay_log=10000
sync_relay_log_info=10000


Thank you in advance.

Best regards from Germany
Jens