Baidu also found a lot of ways, I mention is fio tool test
Execute the command is probably this

 fio - filename=/home/test/test. TXT - direct=1 - iodepth 1 - thread - rw=write - ioengine=psync - bs=20 k - size=20 g - numjobs=20 - the runtime=20 - group_reporting - name=file 

Size so I can write a test file is written to speed, but you can't get this server disk a best write speed
Which bosses know?