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From "Olav Sandstaa (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-2657) Performance regression after check-in of svn 531971
Date Wed, 16 May 2007 00:13:16 GMT

     [ https://issues.apache.org/jira/browse/DERBY-2657?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Olav Sandstaa updated DERBY-2657:

    Attachment: TestClient2.java

Test client that can be used to show that there has been a performance regression.

This test is  based on a slightly modified version of the test client found in
DERBY-1961. The main change is to add a secondary index to
it that is used for the queries.

To run this client do:

1. Create and initialize database:

    java  TestClient2 -a initdb -u "jdbc:derby:/tmp/tulldb;create=true"

2. Run test (which does SELECT * FROM ... WHERE SEC_ID= X) with two
client threads:

    java TestClient2 -a select -r 60 -c 2 -u "jdbc:derby:/tmp/tulldb"

> Performance regression after check-in of svn 531971
> ---------------------------------------------------
>                 Key: DERBY-2657
>                 URL: https://issues.apache.org/jira/browse/DERBY-2657
>             Project: Derby
>          Issue Type: Bug
>          Components: Store
>    Affects Versions:
>         Environment: Solaris/Linux, Sun JDK 5 & 6, IBM 1.5
>            Reporter: Olav Sandstaa
>         Attachments: TestClient2.java
> After check-in of svn 531971 on DERBY-2537 it seems like there for
> some loads are a performance regression of about 10-15 percent.
> For more info about this issue see the following mail thread:
> http://www.nabble.com/Performance-regression-after-check-in-on-DERBY-2537-(SVN-531971)-t3651494.html

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