這幾天， ThrustVPS 上的 node 硬碟好像卡到陰的一樣，轉不太動


[root@www ~]#hdparm -tT /dev/xvda1

/dev/xvda1:
Timing cached reads: 2 MB in 2.11 seconds = 971.82 kB/sec
Timing buffered disk reads: 16 MB in 3.14 seconds = 5.09 MB/sec
[root@www ~]#hdparm -tT /dev/xvda1

/dev/xvda1:
Timing cached reads: 7564 MB in 1.99 seconds = 3798.40 MB/sec
Timing buffered disk reads: 6 MB in 3.59 seconds = 1.67 MB/sec
[root@www ~]#hdparm -tT /dev/xvda1

/dev/xvda1:
Timing cached reads: 6316 MB in 1.99 seconds = 3170.20 MB/sec
Timing buffered disk reads: 84 MB in 3.03 seconds = 27.71 MB/sec
[root@www ~]#hdparm -tT /dev/xvda1

/dev/xvda1:
Timing cached reads: 6526 MB in 1.99 seconds = 3274.96 MB/sec
Timing buffered disk reads: 4 MB in 3.13 seconds = 1.28 MB/sec
[root@www ~]#hdparm -tT /dev/xvda1

/dev/xvda1:
Timing cached reads: 5828 MB in 1.99 seconds = 2924.11 MB/sec
Timing buffered disk reads: 8 MB in 4.03 seconds = 1.99 MB/sec
[root@www ~]#hdparm -tT /dev/xvda1

/dev/xvda1:
Timing cached reads: 3286 MB in 2.00 seconds = 1645.96 MB/sec
Timing buffered disk reads: 10 MB in 4.47 seconds = 2.24 MB/sec
[root@www ~]#