SSD read and write speed indicates how quickly data is written to and read from the storage drive. So, if you want better system performance and responsiveness, you must regularly test SSD read/write speed. Here's how you can test SSD read and write spee
I realise that you probably know a lot of the above but I included it for any folk who are not so clued up on ssd's. It will be interesting to see how your new drives test results compare to your old hdd's. I am puzzled by this comment ,...
[root@centos7 test]# fio -fimename=/dev/sdc1 -direct=1 -rw=randwrite -iodepth=1 -ioengine=psync -bs=4k -size=2G -numjobs=1 -runtime=10 -group_reporting -name=name name: (g=0): rw=randwrite, bs=4K-4K/4K-4K/4K-4K, ioengine=psync, iodepth=1 fio-2.1.10 Starting 1 process ...
Throughput测试:只有两个组合,BS=1024K Sequence Write和BS=1024K Sequence Read,用Sequence Write的值来判断Steady Status Latency测试:只使用3种RW Mix组合(100/0,65/35,0/100)和3种BS(8K,4K, 512Byte),另外需要把队列数和线程数都设为1 饱和写测试Write Saturation (WSAT) test,对SSD进行长时间的Random ...
-rw=randwrite:读写模式,randwrite是随机写测试,还有顺序读read,顺序写write,随机读randread,混合读写等。 -ioengine=libaio:libaio指的是异步模式,如果是同步就要用sync。 -direct=1:是否使用directIO。 -thread:使用pthread_create创建线程,另一种是fork创建进程。进程的开销比线程要大,一般都采用thread测试。
2、虽在Sequential Read&Write of IOPS方面 SATA略优于SSD,但数据库很少有这种应用。 测试结果数据统计: 以上主要测试硬盘在IO方面的性能对比结果,目前暂未测试基于MySQL QPS/TPS的测试结果。
Step 2.Choose the target drive, set the test data, and click "Start." 2. How to test SSD speed in Windows 10? Open Task Manager from the Windows Search bar and click the Performance option. Next, select your Disk from the left column, and you can check the running read/write speed...
Random Read/Write Speed This test writes 4KB in a completely random pattern over an 8GB space of the drive to simulate the sort of random writes that you'd see on an OS drive (even this is more stressful than a normal desktop user would see). I perform three concurrent IOs and run ...
And if so, isn't it just plain deceitful at worst and questionable at best to throw TLC drives out there and sell them with the read/write specifications that they put down? Cuz the specs are pretty much lying after the data has been around a few weeks. I can't but compare this to...
128 --rw=write --bs=1M --runtime=5m --time_based=1 --group_reporting >>1M_write.log备注:以上适用于sata hdd,ssd...的性能测试,具体参数结果可与spec性能对比--direct 直接绕过文件系统缓存,读写磁盘,这个参数必须加,不然测出来的磁盘性能会偏高,无论是裸盘还是格式化均可以使用对于nvme ssd 需要添加...