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When my disk driver changed to Virtio...
Berore:
fio Disk Speed Tests (Mixed R/W 50/50) (Partition /dev/sda1):
---------------------------------
Block Size | 4k (IOPS) | 64k (IOPS)
------ | --- ---- | ---- ----
Read | 2.44 MB/s (611) | 36.67 MB/s (572)
Write | 2.46 MB/s (615) | 36.94 MB/s (577)
Total | 4.90 MB/s (1.2k) | 73.61 MB/s (1.1k)
| |
Block Size | 512k (IOPS) | 1m (IOPS)
------ | --- ---- | ---- ----
Read | 186.76 MB/s (364) | 272.97 MB/s (266)
Write | 196.69 MB/s (384) | 291.15 MB/s (284)
Total | 383.46 MB/s (748) | 564.12 MB/s (550)
After:
fio Disk Speed Tests (Mixed R/W 50/50) (Partition /dev/vda1):
---------------------------------
Block Size | 4k (IOPS) | 64k (IOPS)
------ | --- ---- | ---- ----
Read | 137.84 MB/s (34.4k) | 2.22 GB/s (34.8k)
Write | 138.20 MB/s (34.5k) | 2.24 GB/s (35.0k)
Total | 276.04 MB/s (69.0k) | 4.47 GB/s (69.8k)
| |
Block Size | 512k (IOPS) | 1m (IOPS)
------ | --- ---- | ---- ----
Read | 2.80 GB/s (5.4k) | 3.04 GB/s (2.9k)
Write | 2.95 GB/s (5.7k) | 3.25 GB/s (3.1k)
Total | 5.76 GB/s (11.2k) | 6.29 GB/s (6.1k)
So, what is the actual performance of this disk?
Comments
Yes
?
You cannot know physical performance because you are in a virtualized environment. A virtualized environment depends on many factors: the type of physical storage, its settings, the settings of the virtualized environment, the number of users sharing this storage, and so on.
Thank you, rustelekom
Glad to help.