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https://issues.apache.org/jira/browse/DERBY-6841?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rick Hillegas updated DERBY-6841:
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Attachment: DERBY_6841.java
Attaching a test program which demonstrates the problem: DERBY_6841.java. The
program does the following:
1) Runs under BUILTIN authentication.
2) Boots an empty database 100 times.
To run the test, do the following:
i) Run the program first under 10.11.1.1 just to create the database.
ii) Then re-run the program with 10.11.1.1 in order to collect statistics for
that earlier release.
iii) Then re-run the program with 10.12.1.1 in order to collect statistics for
that later release.
This is what I'm seeing:
{noformat}
For 10.11.1.1:
[/Users/rhillegas/sw/derby/lib-10.11.1.1/derby.jar] 10.11.1.1 - (1616546)
Booted database 0 average over 100 times = 16.47
Shutdown database 0 average over 100 times = 6.79
Shutdown engine average over 1 times = 12.0
For 10.12.1.1:
[/Users/rhillegas/sw/derby/lib-10.12.1.1/derby.jar] 10.12.1.1 - (1704137)
Booted database 0 average over 100 times = 92.67
Shutdown database 0 average over 100 times = 21.88
Shutdown engine average over 1 times = 3.0
{noformat}
To summarize:
A) Booting a database takes 5 times longer under 10.12.1.1.
B) Shutting down a database takes 3 times longer under 10.12.1.1.
C) But shutting down the engine takes 1/4 of the time under 10.12.1.1.
> Derby v10.12.1.1 is horribly slow compared to v10.11.1.1 in embedded mode
> -------------------------------------------------------------------------
>
> Key: DERBY-6841
> URL: https://issues.apache.org/jira/browse/DERBY-6841
> Project: Derby
> Issue Type: Bug
> Components: JDBC, SQL
> Affects Versions: 10.12.1.1
> Environment: OS: Windows, OS X, Linux
> CPU: Quad-Core Intel i5
> App: Swing, multi-threaded
> Reporter: Xavion
> Fix For: 10.11.1.1
>
> Attachments: DERBY_6841.java
>
>
> It takes much longer to open, read, and close embedded databases using
> v10.12.1.1 than it did with v10.11.1.1. What ever changes you guys made over
> the last year and a bit have definitely been for the worse.
> Below are the results of the repetition tests I've just run on the same
> computer with the same databases. Let me know if you need to know about the
> sizes of the databases and/or the file type they contain.
> Connecting with v10.11.1.1:
> Database opened in 0.82 seconds.
> Database opened in 0.77 seconds.
> Database opened in 0.88 seconds.
> Database opened in 0.77 seconds.
> Database opened in 0.77 seconds.
> Database opened in 0.96 seconds.
> Database opened in 0.74 seconds.
> Connecting with v10.12.1.1:
> Database opened in 1.98 seconds.
> Database opened in 2.07 seconds.
> Database opened in 1.97 seconds.
> Database opened in 2.01 seconds.
> Database opened in 2.01 seconds.
> Database opened in 2.00 seconds.
> Database opened in 2.03 seconds.
> Reading with v10.11.1.1:
> Database processed in 6.17 seconds.
> Database processed in 4.00 seconds.
> Database processed in 3.67 seconds.
> Database processed in 3.66 seconds.
> Database processed in 3.78 seconds.
> Database processed in 3.69 seconds.
> Database processed in 3.74 seconds.
> Reading with v10.12.1.1:
> Database processed in 7.29 seconds.
> Database processed in 4.54 seconds.
> Database processed in 4.88 seconds.
> Database processed in 4.65 seconds.
> Database processed in 4.34 seconds.
> Database processed in 4.35 seconds.
> Database processed in 4.50 seconds.
> Disconnecting with v10.11.1.1:
> Database closed in 0.11 seconds.
> Database closed in 0.13 seconds.
> Database closed in 0.15 seconds.
> Database closed in 0.14 seconds.
> Database closed in 0.10 seconds.
> Database closed in 0.13 seconds.
> Database closed in 0.14 seconds.
> Disconnecting with v10.12.1.1:
> Database closed in 0.74 seconds.
> Database closed in 0.87 seconds.
> Database closed in 0.76 seconds.
> Database closed in 0.87 seconds.
> Database closed in 0.85 seconds.
> Database closed in 0.69 seconds.
> Database closed in 0.84 seconds.
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