Java Performance筆記

IPC: instructions per clockios CPI: cycles per instruction網絡   1. 較高的內核/系統CPU使用率意味着程序可能有較激烈的資源競爭或者大量的IO交互。要儘量地下降內核CPU佔用率。app   2. CPU utilization monitoring tools bundled with modern operatingide syst

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