83 lines
2.8 KiB
Markdown
83 lines
2.8 KiB
Markdown
> 本地作者；丁辉
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# 测试磁盘是否为SSD
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## 方法一
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> 判断cat /sys/block/*/queue/rotational的返回值（其中*为你的硬盘设备名称，例如sda等等），如果返回1则表示磁盘可旋转，那么就是机械硬盘HDD了；反之，如果返回0，则表示磁盘不可以旋转，那么就有可能是固态硬盘SSD了。
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```bash
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grep ^ /sys/block/*/queue/rotational
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```
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## 方式二
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1. 安装sysbench
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```bash
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yum install -y sysbench
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```
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2. 选择要测的磁盘路径 /opt
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```bash
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cd /opt
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```
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3. 建文件
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> 准备阶段：IO测试,线程数为40,创建大小为500M的测试文件64个,共32G,使用了随机读写模式(rndrw)测试300s，执行完后会在当前目录下生成一堆小文件。
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```bash
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sysbench --test=fileio --file-total-size=32G --file-test-mode=rndrw --max-time=300 --max-requests=0 --file-block-size=16K --file-num=64 --num-threads=40 prepare
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```
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4. 测 IO
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```bash
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sysbench --test=fileio --file-total-size=32G --file-test-mode=rndrw --max-time=300 --max-requests=0 --file-block-size=16K --file-num=64 --num-threads=40 run
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```
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5. 输出结果
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```bash
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WARNING: the --test option is deprecated. You can pass a script name or path on the command line without any options.
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WARNING: --num-threads is deprecated, use --threads instead
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WARNING: --max-time is deprecated, use --time insteadsysbench 1.0.17 (using system LuaJIT 2.0.4)
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Running the test with following options:
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Number of threads: 40
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Initializing random number generator from current time
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Extra file open flags: (none)64 files, 512MiB each32GiB total file sizeBlock size 16KiBNumber of IO requests: 0Read/Write ratio for combined random IO test: 1.50Periodic FSYNC enabled, calling fsync() each 100 requests.Calling fsync() at the end of test, Enabled.Using synchronous I/O modeDoing random r/w testInitializing worker threads...
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Threads started!
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File operations:
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reads/s: 36369.44
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writes/s: 24246.29
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fsyncs/s: 38802.60
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Throughput:
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read, MiB/s: 568.27
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written, MiB/s: 378.85
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General statistics:
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total time: 300.0042s
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total number of events: 29824059
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Latency (ms):
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min: 0.00
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avg: 0.37
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max: 8.21
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95th percentile: 1.96
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sum: 11174442.44
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Threads fairness:
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events (avg/stddev): 745601.4750/1916.86
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execution time (avg/stddev): 279.3611/0.06
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```
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6. 解读
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读写次数在2万~4万间，吞吐量在300~600M/s，可以判定磁盘为SSD。 |