Comparison of a common system, a statistical method of system performance indicators

A common system in the company, a statistical method of system performance indicators.
can not use full log, full log is relatively large, if sampling, what good way, sampling, can be closer to the real situation? if sampling, is there a similar set up at present? thank you

May.22,2021

do you have any good ways?

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e54643-59834.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e54643-59834.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?