Echarts polling drawing

the running information of our server needs to be obtained by polling, and the echarts ring diagram shows


.

I don"t know if I"ve ever encountered it, or what"s wrong with me?

Mar.28,2021

the polled data is merged into the original data.
you need to add the second parameter true
such as myChart.setOption (option, true)\

to setOption.

reference


I wrote it wrong. My data is always in push,.

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-64f5-1b34b1c-2bf27.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b34b1c-2bf27.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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