Re: PHP compared to Java/J2EE
Jerry Stuckle wrote:
Yes, but MySQL (and many other databases) access through the jdbc
drivers is much slower than in PHP. The JDBC driver is often byte code
and needs to be interpreted. OTOH, the PHP driver is compiled C, and
uses the C calls to the database, which are generally faster.
First of all, bytecode interpretation is a fraction of the overhead of talking
to a database.
Secondly, all production-grade JVMs optimize the heck out of bytecode to a
degree at least comparable to C code.
Do you have citations for the differences in Java MySQL speed and PHP MySQL speed?
Do you have citations for the reasons for any differences?
I am still interested - do you have citations for performance differences
between the Java / MySQL combination and other Java / RDBMS combinations like
Postgres or Oracle?
I hear the conclusions that have been stated:
- Java / Tomcat to MySQL is slower than other Java / RDBMS combinations.
- Java / Oracle works better than Java / Tomcat / MySQL.
- There were severe performance problems (unspecified) with Linux / Tomcat /
MySQL.
- These problems necessitated a switch to PHP (implying no other solution
would have worked?).
- Java / Tomcat to MySQL is slower than PHP / Apache / MySQL.
- This latter is due to bytecode interpretation being slower than C binary
execution.
- C calls to MySQL are generally faster than JDBC calls to MySQL.
One at least is incorrect. I am interested in the evidence for the others.
--
Lew