* [Accel-config] Re: [PATCH 0/2] Add API to get wq occupancy
@ 2021-08-11 17:03 Dave Jiang
0 siblings, 0 replies; 2+ messages in thread
From: Dave Jiang @ 2021-08-11 17:03 UTC (permalink / raw)
To: accel-config
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On 8/11/2021 9:52 AM, Luck, Tony wrote:
>> Adds API to get wq occupancy attribute and include in wq listing.
> What do we mean by "occupancy"? To me that sounds like "how many of the available slots in the WQ are in use?"
Correct.
>
> Does the h/w provide that information? It seems like it would be transient (i.e. the device will process descriptors
> and change the value almost as fast as it can be read).
>
Yes the hw provides that. And yes it's transient. user library people
wanted to use that as a way to guesstimate flow control I believe.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Accel-config] Re: [PATCH 0/2] Add API to get wq occupancy
@ 2021-08-11 16:52 Luck, Tony
0 siblings, 0 replies; 2+ messages in thread
From: Luck, Tony @ 2021-08-11 16:52 UTC (permalink / raw)
To: accel-config
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> Adds API to get wq occupancy attribute and include in wq listing.
What do we mean by "occupancy"? To me that sounds like "how many of the available slots in the WQ are in use?"
Does the h/w provide that information? It seems like it would be transient (i.e. the device will process descriptors
and change the value almost as fast as it can be read).
-Tony
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2021-08-11 17:03 [Accel-config] Re: [PATCH 0/2] Add API to get wq occupancy Dave Jiang
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2021-08-11 16:52 Luck, Tony
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