guw writes: > Hello! > I write a JAVA programme and compile it with GCJ. then I compare GCJ's performance with JVM'performance,but I discover that the procedure to be GCJ compiled is slower than JVM. > why? My guess would be that libgcj's implementation of SHA-1 is slower than that in whatever JVM you were using. I expect that SHA-1 could be made to run very much faster. Andrew.