1. SQLSERVER信息收集 SQLDIAG 使用界面 C:\Users\Administrator>sqldiag2018/01/02 08:13:26.10 SQLDIAG Collector version2018/01/02 08:13:28.19 SQLDIAG IMPORTANT: Please wait until you see "Collection started" before attempting toreproduce your issue 2018…
记录一下 这一块 join的理解了 再完善过来. 1. Statistics的用法: 清空执行计划用的命令 dbcc freeproccache 清空buffer pool 里面的缓存命令 dbcc dropcleanbuffers 执行之前set statistics 命令之前可以执行如上的两个命令 1. set statistics time on 举例 set statistics time on go select count(1) from zwkmye2017 go set stat…
tuning for Data Transfer hosts connected at speeds of 1Gbps or higher <一.本次OpenStack系统调试简单过程简单记录> 1,dmesg 日志,丢包问题关键原因定位; [101231.909932] net_ratelimit: 85 callbacks suppressed…