[ http://issues.apache.org/jira/browse/DERBY-1664?page=all ]
David Van Couvering updated DERBY-1664:
---------------------------------------
Attachment: perftest.diff
I am attaching a set of unit tests I built to time the various parts of
startup. On my Solaris x86 with the write cache enabled (my research shows it
can't be *disabled* with IDE drives) I have quite acceptable startup times,
with the majority of it being spent on database creation.
Next week I'll try some runs on a Linux machine whose SCSI drive has the write
cache disabled. I wonder if people who are having trouble are running in such
environments...
If these tests look good, I can check them in.
.Testing startup with a NEW database... All measurements are in milliseconds.
Loading driver: 371
Open connection with creating new database: 1212
Creating a table: 232
Time: 1.817
OK (1 test)
.Testing startup with an EXISTING database... All measurements are in
milliseconds.
Loading driver: 302
Open connection with existing database: 353
Creating a table: 286
Time: 1.22
OK (1 test)
> Derby startup time is too slow
> ------------------------------
>
> Key: DERBY-1664
> URL: http://issues.apache.org/jira/browse/DERBY-1664
> Project: Derby
> Issue Type: Improvement
> Components: Store
> Reporter: David Van Couvering
> Assigned To: David Van Couvering
> Fix For: 10.2.0.0
>
> Attachments: perftest.diff
>
>
> I know it's hard to measure what "too slow" is, but this is a common
> complaint and this affects overall perception of Derby. This appears to be
> related to another common complaint that it takes too long to create tables.
> I am marking this as Urgent because of the impact it has to Derby perception
> and the fact that the 10.2 release is going to get such wide distribution
> through the Sun JDK.
> For background, see http://www.nabble.com/Startup-time-tf2012748.html#a5531684
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