Reduce size of encoding buffer for short character values
---------------------------------------------------------
Key: DERBY-4661
URL: https://issues.apache.org/jira/browse/DERBY-4661
Project: Derby
Issue Type: Improvement
Components: JDBC
Affects Versions: 10.7.0.0
Environment: Inserts using setXStream(int, Reader/InputStream,
int/long) for short values on character columns
Reporter: Kristian Waagan
Assignee: Kristian Waagan
Priority: Minor
When inserting character values Derby converts from Java char to an on-disk
encoding of UTF-8. To to this, the user stream is read and the resulting bytes
after conversion are placed in a "translation buffer". The default size of the
buffer is 32 KB. When inserting a lot of short values, the pressure on the Java
garbage collector is unnecessary high and the allocation/GC also causes a
somewhat higher CPU usage.
This effect of this issue can easily be reduced by sizing the buffer in the
appropriate cases.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
