i have the same problem , but for me it appeared only since i upgraded to 9.04 . i have vmware player running from a ext4 partition running on a encrypted partition (the same behavior is true also with vmware server). When a lot of disk activity starts , the cpu goes into 100 % usage , with about 95% iowait and the disk throughput drops.
i did not have this problem / did not feel it that much with 8.10 my kernel ( standard from 9.04 ): Linux 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:58:03 UTC 2009 x86_64 GNU/Linux -- Random access read speed from encrypted device is very slow compared with other linux distributions https://bugs.launchpad.net/bugs/363763 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs