Tag history forward slowly

Ignition Early Access
1

Hi, I’m using ignition 8.05 to developing project, today I find the history didn’t forward database quickly, through Table component, I observe that when the time is 2019-11-13 18:32:31, the table shows as follows:

1
1277×664 25.2 KB

when the time is 2019-11-13 18:36:41, the table show as follows:

2
2261×613 22.6 KB

So I think the data has cached to memory or disk, but it takes long time forwarding to database. As it’s normal before time, I can’t find the reason that the data didn’t insert to the DB at the current time.

Below is some configuration and status of my project.

3
31064×894 37 KB
4
41138×612 17 KB
5
51090×222 6.71 KB

I’am now extremely anxious about the problem, any one can help me?

2

This is the Database detail.

6
61127×727 48.9 KB

3

What type of database?

4

Mysql , ignition and DB placed in two virtual machine under ESXi.
I have Disabled Disk Cache , the cache data forward to mysql immediately， now it’s normal.

5

Can you tell me what is the unit of Write Time under Forward Settings? ms or seconds?
I have changed it from 1000 to 1.