Comparison RHEL5 and RHEL6 (1)

RHEL6ベータ2とRHEL5カーネルのいくつかの比較です。
Some comparison RHEL5 and RHEL6 beta2 kernel.

  • Kernel version
    • RHEL5.5: 2.6.18-194.8.1.el5
    • RHEL6(beta2): 2.6.32-37.rhel6
  • Scheduler
    • RHEL5.x: O(1)
    • RHEL6b2 : CFS
  • I/O Scheduler
    • RHEL5.x: CFQ (and deadline, anticipatory, noop)
    • RHEL6b2: CFQ (and deadline, anticipatory, noop)
  • Filesystems
    • RHEL5.x: EXT3, EXT2, etc (EXT4 is tech preview)
    • RHEL6b2: EXT4, EXT3, EXT2, etc (Btrfs kernel module is compiled)
  • timer interrupt Hz (tick)
    • 1000Hz (Normal and PAEkernel, kernel-xen is 250Hz)
    • Tickless