sar -b看IO

最新推荐文章于 2025-03-05 14:27:42 发布

最新推荐文章于 2025-03-05 14:27:42 发布 · 1.8k 阅读

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[root@abc ~]#  man sar
       -b     Report I/O and transfer rate statistics.  The following values are displayed:
              tps
                     Total number of transfers per second that were issued to physical devices.  A transfer is an I/O request to a physical device. Multiple logical requests  can  be  combined into a single I/O request to the device.  A transfer is of indeterminate size.
              rtps
                     Total number of read requests per second issued to physical devices.
              wtps
                    Total number of write requests per second issued to physical devices.
              bread/s
                     Total  amount  of data read from the devices in blocks per second.  Blocks are equivalent to sectors with 2.4 kernels and newer and therefore have a size of 512 bytes.
                     With older kernels, a block is of indeterminate size.
              bwrtn/s
                     Total amount of data written to devices in blocks per second.

[root@abc ~]# sar -b 1 5
Linux 2.6.32-642.el6.x86_64 (abc) 	06/06/2018 	_x86_64_	(4 CPU)


12:12:02 PM       tps      rtps      wtps   bread/s   bwrtn/s
12:12:03 PM      2.00      0.00      2.00      0.00     64.00
12:12:04 PM      0.00      0.00      0.00      0.00      0.00
12:12:05 PM      0.00      0.00      0.00      0.00      0.00
12:12:06 PM      2.00      0.00      2.00      0.00     64.00
12:12:07 PM      0.00      0.00      0.00      0.00      0.00
Average:         0.80      0.00      0.80      0.00     25.60


[root@abc ~]#