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Intel 320 SSD read performance


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(this is cross-post from https://www.percona.com/blog/)
While PCI-e Flash cards show great performance, I am often asked about alternatives, as price for PCI-e cards is still significant and not acceptable for small companies and startups.

Intel 320 SSD appears to be a popular drive with a quite acceptable price.
I wrote about write performance of these cards, and now let’s take look on a random read workload.

I used a Cisco UCS C250 as base hardware, comparing in it:

  • regular RAID10 over 8 SAS 2.5 disks
  • single Intel 320 SSD directly attached to a HighPoint RocketRAID 2300
  • two Intel 320 SSD in hardware RAID0 mode, attached to a LSI SAS9211-4i controller

For simulating the workload I used sysbench’s fileio random reads. Scripts and raw results available on Launchpad.

Let’s see throughput results:

Throughput, MiB/sec (more is better)
threadsIntel 320Intel 320 2 stripRAID10ratio Intel 320 / RAID10ratio Intel 320 2 strip / RAID10
130.2731.183.758.078.31
255.1860.496.987.918.67
495.13112.8512.107.869.33
8143.58191.6419.057.5410.06
16174.75277.7026.706.5410.40
32174.60351.8432.905.3110.69

And response times:

95% response time, ms (less is better)
threadsIntel 320 SSDIntel 320 SSD stripRAIDratio RAID/Intel 320ratio RAID/Intel 320 strip
10.530.566.1311.5710.95
20.720.597.2710.1012.32
40.890.7410.0711.3113.61
81.240.9515.6312.6016.45
161.761.3825.5214.5018.49
323.332.1547.3514.2222.02

As conclusion, this card provides great read performance. A single card provides 5-8x better throughput and 10-14x better response time. Striping helps to increase throughput in 8-10x and response time in 10-22x.

While there are questions about write performance (see my previous post), I think this card is very suitable for read-intensive tasks, where you can expect significant improvements.




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Vadim Tkachenko

Vadim leads Percona's development group, which produces Percona Clould Tools, the Percona Server, Percona XraDB Cluster and Percona XtraBackup. He is an expert in solid-state storage, and has helped many hardware and software providers succeed in the MySQL market.



Categories:
Benchmarks, Hardware and Storage


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