On Sat, Nov 21, 2009 at 6:41 PM, Adam Williamson awilliam@redhat.com wrote:
On Sat, 2009-11-21 at 10:33 -0700, stan wrote:
I eliminate all unnecessary functionality, and tune for my hardware. I think the main things that fixed the problem were eliminating the lower 128K of memory from user space (what a kludge!), making the desktop preemptable, and raising the tick frequency to 1000. I eliminate a
...
On the other hand it could be like that old joke about the tigers.
A passerby in a city sees a man sprinkling flour in intricate patterns around his house. He asks him what he is doing. The flour sprinkler says, "I'm putting in place tiger repellant." The passerby says, "There are no tigers around here!" The flour sprinkler says, "Effective, isn't it."
Exactly. For a start, Fedora's default kernel config is tickless (NOHZ is enabled) by default.
That does not mean that the HZ setting has no effect ;)
The kernel is not fully tickless yet, regardless we already have CONFIG_HZ=1000 and CONFIG_HZ_1000=y set ;)