信息: 磁盘使用率 / Disk Utilization 工具: sar -dp 2 5 示例: [root@london data]# sar -dp 2 5 Linux 2.6.18-128.el5 (london.sz.fonsview.com) 10/20/2018 Average: DEV tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz await svctm %utilAverage: sda 7.60 420.80 70.40 64.63 0.04 5.50 4.43 ...
有助于快速定位性能瓶颈，检查出所有资源（CPU、内存、磁盘IO等）的利用率（utilization）、饱和度（satur...
Although pidstat shows CPU utilization by default, it can do much more. For example, you can use the - r option to monitor memory and -d to turn on disk monitoring. Try them out, and then look at the pidstat(1) manual page to see even more options for threads, context switching, or...
分析利用率、饱和、错误 (Utilization, Saturation and Errors (USE))和系统资源 「执行系统变更的步骤:」 执行系统变更的步骤 设定基线:在调优中,执行性能测试,收集指标 执行变更:在系统上执行变更,建议查阅相应官方文档 验证变更有效性:执行变更后,重新运行测试,比较一些关键指标 取消变更并与基线对比:如有需要,可以...
In this article, I will cover three advanced disk utilization diagnostic topics, including one that leverages a feature I added in version 0.6. Case 1: Files hidden by mounted volumes When diagnosing a disk usage issue, you may struggle to free up space, and then you might notice a seemingl...
利用率 Utilization 资源提供服务的平均时间(70%) 饱和度 Saturation 资源承担额外工作量的能力,这类工作通常 排队(队列长度) 错误Errors 错误事件数量 「执行系统变更的步骤:」 执行系统变更的步骤 设定基线:在调优中,执行性能测试,收集指标 执行变更:在系统上执行变更,建议查阅相应官方文档 验证变更有效性:执行变更后...
The df command displays disk space usage for file systems. It shows the filesystem name, total/used/available space, and capacity.For example:df -hThe above command will print the disk utilization in a human-readable format. You can also run it without arguments to get the same data in ...
schedutil is a CPU frequency scaling governor that makes decisions based on the utilization data provided by the scheduler, as opposed to other governors that use CPU idle time, such as ondemand. It was introduced in the Linux kernel version 4.7. However, it is only viable for production use...
分析利用率、饱和、错误 (Utilization, Saturation and Errors (USE))和系统资源 「执行系统变更的步骤:」 执行系统变更的步骤 设定基线:在调优中,执行性能测试,收集指标 执行变更:在系统上执行变更,建议查阅相应官方文档 验证变更有效性:执行变更后,重新运行测试,比较一些关键指标 ...
Oracle customers a feature-rich SAN with automated tiered storage at the block level, enabling them to improve utilization, simplify replication, and speed data recovery in their enterprise. When combined with Oracle’s industry-leading support for Linux, organizations stand to benefit even further....