On the handling of excessive disk cache in linux server

question:

linuxfree -hbuff/cache()

Picture:

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  1. generally speaking, this high point does not matter, and the system response will be quick. Refer to linux ate ram .
  2. use df-h to check the usage of tmpfs. Some distributions / kernels will count this part in buff/cache
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-64f5-1e818f0-46941.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e818f0-46941.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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