昨天开始，卡的不行，今天测了下IO惨不忍睹...难道是我打开方式不对嘛....
- root@ubuntu:~# sync;/usr/bin/time -p bash -c "(dd if=/dev/zero of=test.dd bs=1M count=10000)"
- 10000+0 records in
- 10000+0 records out
- 10485760000 bytes (10 GB, 9.8 GiB) copied, 1316.64 s, 8.0 MB/s
- real 1317.36
- user 0.00
- sys 13.80
- root@ubuntu:~# hdparm -Tt --direct /dev/mapper/ubuntu--vg-lv--root
- /dev/mapper/ubuntu--vg-lv--root:
- Timing O_DIRECT cached reads: 338 MB in 2.01 seconds = 168.33 MB/sec
- Timing O_DIRECT disk reads: 42 MB in 3.67 seconds = 11.44 MB/sec
美国VPS综合讨论
