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Bruce Momjian 5383b5d8ed Okay, I have some new code in place that hopefully should work better. I ... couldn't produce a full patch using cvs diff -c this time since I have created new files and anonymous cvs usage doesn't allow you to adds. I'm supplying the modified src/interfaces/jdbc as a tarball at : http://www.candleweb.no/~gunnar/projects/pgsql/postgres-jdbc-2000-10-05.tgz The new files that should be added are : ? org/postgresql/PGStatement.java ? org/postgresql/ObjectPool.java ? org/postgresql/ObjectPoolFactory.java There is now a global static pool of free byte arrays and used byte arrays connected to a statement object. This is the role of the new PGStatement class. Access to the global free array is synchronized, while we rely on the PG_Stream synchronization for the used array. My measurements show that the perfomance boost on this code is not quite as big as my last shot, but it is still an improvement. Maybe some of the difference is due to the new synchronization on the global array. I think I will look into choosing between on a connection level and global level. I have also started experimented with improving the performance of the various conversions. The problem here is ofcourse related handle the various encodings. One thing I found to speed up ResultSet.getInt() a lot was to do custom conversion on the byte array into int instead of going through the getString() to do the conversion. But I'm unsure if this is portable, can we assume that a digit never can be represented by more than one byte ? It works fine in my iso-latin-8859-1 environment, but what about other environments ? Maybe we could provide different ResultSet implementations depending on the encoding used or delegate some methods of the result set to an "converter class". Check the org/postgresql/jdbc2/FastResultSet.java in the tarball above to see the modified getInt() method. Regards, Gunnar		26 years ago
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fastpath	Another attempt at 7.0	26 years ago
geometric	Another attempt at 7.0	26 years ago
jdbc1	Okay, I have some new code in place that hopefully should work better. I	26 years ago
jdbc2	Okay, I have some new code in place that hopefully should work better. I	26 years ago
largeobject	Another attempt at 7.0	26 years ago
util	Okay, I have some new code in place that hopefully should work better. I	26 years ago
xa	Another attempt at 7.0	26 years ago
Connection.java	Okay, I have some new code in place that hopefully should work better. I	26 years ago
Driver.java	This patch implements the following command:	26 years ago
Field.java	Okay, I have some new code in place that hopefully should work better. I	26 years ago
ObjectPool.java	Okay, I have some new code in place that hopefully should work better. I	26 years ago
ObjectPoolFactory.java	Okay, I have some new code in place that hopefully should work better. I	26 years ago
PGStatement.java	Okay, I have some new code in place that hopefully should work better. I	26 years ago
PG_Stream.java	Okay, I have some new code in place that hopefully should work better. I	26 years ago
ResultSet.java	Added org/postgresql/DriverClass.java to the list of files removed by make clean (it's dynamically built)	26 years ago
errors.properties	Attempt III	26 years ago
errors_fr.properties	Attempt III	26 years ago
errors_nl.properties	Attempt III	26 years ago