Arjan van de Ven wrote:
Dave,
As you have appeared here, could you please comment why HZ was changed?
I have some confusion on this.
First, the upstream kernel has this changed (since 2.6.13 ?) in backward
direction, i.e. from 1000 to 250.
actually the upstream kernel changed to offer a choice, with 3 options,
1000, 250 and 100.
Sure! But I meant the *upstream default" was chosen to be 250 (not 1000).
Second, why Fedora's change is implemented just now (in the middle of
life cycle), but not at distro release boundary?
does it matter? This is only internally visible to the kernel, not to
userspace
But these changes are appreciable enough. For production servers (more
system CPU time), for laptops (less battery life), etc. And note the ntp
issue discussed here too...
~buc
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