mysql基准测试-sysbench

此次的基准测试，通过sysbench工具完成，主要对比组也是通过去租参数去完成，并对照结果。

对比参数

innodb_flush_log_at_trx_commit

sync-binlog

1组 innodb_flush_log_at_trx_commit = 2 sync-binlog = 1 2组 innodb_flush_log_at_trx_commit = 2 sync-binlog = 0

sysbench参数：

1组 oltp_tables_count=15 oltp-table-size=10000000 num-threads=128 oltp-read-only=off rand-type=uniform max-time=1500 percentile=99 2组 oltp_tables_count=15 oltp-table-size=10000000 num-threads=128 oltp-read-only=off rand-type=uniform max-time=1500 percentile=99

测试结果：

1组 read                       　 31575810 write 9021660 other 4510830 total 45108300 transactions 2255415 (1503.56 per sec.) deadlocks 0      (0.00 per sec.) read/write requests 40597470 (27063.99 per sec.) other operations 4510830 (3007.11 per sec.) response time min 7.34ms avg 85.12ms max 8072.93ms 99 percentile 351.16ms 2组 read                       42732508 write 12209288 other 6104644 total 61046440 transactions 3052322 (2034.75 per sec.) deadlocks 0      (0.00 per sec.) read/write requests 54941796 (36625.46 per sec.) other operations 6104644 (4069.50 per sec.) response time min 3.33ms avg 62.90ms max 19946.42ms 99 percentile 204.27ms

测试结论：

通过2组对比测试，当sync-binlog为1时，mysql性能显著的下降，下降约(2034.75-1503.56)/2034.75*100%=26.11%。这个是sysbench测试的结果，tpcc-mysql测试的性能下降比这个要小很多，约10%左右。