On 16-Feb-21 10:46 AM, Bruce Richardson wrote:
On Tue, Feb 16, 2021 at 10:36:13AM +0000, Burakov, Anatoly wrote:
On 16-Feb-21 9:43 AM, Bruce Richardson wrote:
Allow the user to specify that they don't want any core pinning from DPDK
by passing in the coremask of 0.
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I haven't checked what happens yet, but down the line we also set affinity
for service cores as well as interrupt thread. what would be the semantics
of those in this particular case? do we want the same ability for service
cores (i.e. pick a non-affinitized core)? And where does interrupt thread
affinitize in this case (presumably, nowhere too)?
I have not checked the service core setup, because a) I forgot about them
and b) I'm not sure how their affinity rules work with respect to the main
lcore mask. On the other hand I did check out that the lcore mask for all
non-pinned threads, or control threads, is the full set of bits as
expected.
/Bruce
+Harry,
I believe service core mask must not overlap with lcore masks, so
presumably using 0 as lcore mask would make it so that any service core
mask will be valid (which is presumably what we want?). Should service
cores also have a "just pick a core" parameter?
I'm assuming this use-case is explicitly avoiding the CPU/memory/NIA
NUMA affinity question, so i'm not bringing it up :)
--
Thanks,
Anatoly
