# Dashboard MySQL Performance Schema Details: values in Index Access Operations (Load) graph

**URL:** <https://forums.percona.com/t/dashboard-mysql-performance-schema-details-values-in-index-access-operations-load-graph/27942>\
**Category:** PMM 2.x\
**Created:** [January 22, 2024, 12:26pm UTC](https://forums.percona.com/t/dashboard-mysql-performance-schema-details-values-in-index-access-operations-load-graph/27942 "2024-01-22T12:26:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Spinner97](https://avatars.discourse-cdn.com/v4/letter/s/439d5e/32.png) [@Spinner97](https://forums.percona.com/u/Spinner97)\
**Post date:** [January 22, 2024, 12:26pm UTC](https://forums.percona.com/t/dashboard-mysql-performance-schema-details-values-in-index-access-operations-load-graph/27942/1 "2024-01-22T12:26:06Z")

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Hello there,

I’m looking for a description I couldn’t find in the documentation about a graph in a dashboard (see title). Coul you provide a definition of what this graph displays? Furthermore, the values I have at the side are quite confusing. I have a lot of “insert NONE databasename.tablename” and I can’t figure out what is the meaning of this statement (this is not valid SQL AFAIK).

Thanks for your help!

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**Author:** ![Vadim\_Yalovets](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/vadim_yalovets/32/43_2.png) [@Vadim\_Yalovets](https://forums.percona.com/u/Vadim_Yalovets)\
**Post date:** [January 22, 2024, 1:39pm UTC](https://forums.percona.com/t/dashboard-mysql-performance-schema-details-values-in-index-access-operations-load-graph/27942/2 "2024-01-22T13:39:20Z")

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Hi @Spinner97

The graph is based on metric _ **mysql\_perf\_schema\_index\_io\_waits\_seconds\_total** _

 ![Screenshot 2024-01-22 at 15.31.59](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/1/1d8639ee27c42d988184cff11bb1b593c8b1ea7b.png)

So should search a description for table _ **table\_io\_waits\_summary\_by\_index\_usage** _

 ![Screenshot 2024-01-22 at 15.38.19](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/3/3562e248c9c065850b5599dde851c9506aaac3a3.png)

Thank you,

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<div class="post-metadata">

**Author:** ![Spinner97](https://avatars.discourse-cdn.com/v4/letter/s/439d5e/32.png) [@Spinner97](https://forums.percona.com/u/Spinner97)\
**Post date:** [January 22, 2024, 1:44pm UTC](https://forums.percona.com/t/dashboard-mysql-performance-schema-details-values-in-index-access-operations-load-graph/27942/3 "2024-01-22T13:44:06Z")

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Thank you, @Vadim_Yalovets!