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From "Yury Gerzhedovich (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-8580) Expose interface for IO metrics
Date Wed, 07 Nov 2018 09:06:00 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-8580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yury Gerzhedovich updated IGNITE-8580:
--------------------------------------
    Summary: Expose interface for IO metrics  (was: Expose interface for IO metrics spitted
by type)

> Expose interface for IO metrics
> -------------------------------
>
>                 Key: IGNITE-8580
>                 URL: https://issues.apache.org/jira/browse/IGNITE-8580
>             Project: Ignite
>          Issue Type: Task
>          Components: persistence, sql
>            Reporter: Vladimir Ozerov
>            Assignee: Yury Gerzhedovich
>            Priority: Major
>              Labels: iep-27
>             Fix For: 2.8
>
>
> Currently it is impossible to track how many pages of a certain type were read from or
written to disk. This might be very useful for performance tuning and debugging purposes.
E.g. excessive page reads may highlight missing SQL index.
> We need to expose total physical read/write, logical read pages metrics splitted by types
(see org.apache.ignite.internal.processors.cache.persistence.tree.io.PageIO#getType()). Also
need to expose IO statistics by aggregate page type like DATA, INDEX, OTHER
>  



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