Questions tagged «sar»

2
磁盘IOPS与sar tps之间的关系
我试图估计在32位CentOS 6.2上运行的应用程序的IOPS要求。我开始在装有SATA磁盘的计算机上进行一些测量,但对SAR测量的IOPS和tps之间的差异感到非常困惑。 根据维基百科, SATA磁盘应执行75-100 IOPS。ioping实用程序似乎可以为随机访问测试确认这一点: # ./ioping -R /dev/sda --- /dev/sda (device 931.0 Gb) ioping statistics --- 279 requests completed in 3.0 s, 92 iops, 371.3 kb/s min/avg/max/mdev = 2.7 ms / 10.8 ms / 130.8 ms / 7.9 ms 但是sar产生的tps值要高得多(/ dev / sda): # iostat 1 avg-cpu: %user %nice …
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