[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Re: ByteBuffer.allocateDirect ridiculously slow

It's a well known factor that direct bytebuffer allocation is much slower than non direct byte buffers. If you think about it when you allocate a non direct byte buffer then it basically just needs to dereference a pointer to some memory on the Java heap, which is very quick. But for a direct buffer, it has to malloc real memory from the OS, and do a bunch of other house keeping. So yes, if you're using direct byte buffers it pays to re-use them. You should speak to Trustin about this. I believe Netty uses non direct buffers for exactly this reason. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4214413#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...