I'm running IntelliJ IDEA on Mustang. A subset of users (myself included) experience extremely bad mousewheel scrolling performance, but only when running on Java 6. It does not seem to be affected by specific hardware (I've read reports mentioning both ATI and NVidia cards). Neither does the presence/absence of Microsoft IntelliPoint make a difference.
My platform is Windows 2000 running JRE 1.6.0_02, however it seems that the same (or very a similar) problem manifests on Linux. DirectDraw pipeline is disabled. Without changing any of the other external factors, it's very easy to observe the problem by switching between JRE 1.5 and JRE 1.6. In some situations, it takes more than 10 seconds (!) of 100% CPU load to consume all the mousewheel scrolling events. During these periods, one thread from the JVM process has >90% CPU load (reported as 50/50 kernel/used by SysInternals ProcessExplorer). Native stack of this busy thread looks like: ---- ntoskrnl.exe+0x68d43 win32k.sys+0xb14e2 win32k.sys+0xde9e4 ntoskrnl.exe+0x65024 GDI32.dll+0x322db awt.dll+0xe71c1 jvm.dll+0xc06bd ---- I've searched the Sun Bug Database without any results. Is this a known problem? What can I do to provide more information? [Message sent by forum member 'plethora' (plethora)] http://forums.java.net/jive/thread.jspa?messageID=236212 =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
