contention system

基本解释

This method can accurately predict the system contention state so that to estimate the cost of a query precisely.
该方法可以通过确定服务器工作状态来精确地预计系统的查询费用。
NUMA reduces the contention for a system's shared memory bus by having more memory buses and fewer processors on each bus.
通过使用更多的内存总线，并令每条总线上处理器更少，NUMA 减少了系统共享内存总线的冲突。
If probing for the above resources does not identify any bottleneck (i.e., resource contention), observe the system resources (like network I/O, disk I/O, paging etc.).
如果探测以上资源都无法识别瓶颈（即资源争用），那么请观察系统资源（比如 I/O、磁盘 I/O、分页等）。