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Subject: Re: [virtio-dev] [PATCH v2] virtio_net: support low and high rate of notification coalescing
On Tue, Jan 17, 2023 at 03:03:43PM +0200, Alvaro Karsz wrote: > > By comparison this patch is an attempt to offload ethtool's > > --coalesce parameters to the card. IMO what it misses is > > completeness, e.g. sample-interval is not specified. > > AFAIK sample-interval refers to the adaptive coalescing > (adaptive-rx/adaptive-tx) and not to high/low. > > include/uapi/linux/ethtool.h: > * @rate_sample_interval: How often to do adaptive coalescing packet rate > * sampling, measured in seconds. Must not be zero. Oh you are right. So sampling interval here is arbitrary, defined by the device. Worth documenting. > > Also, introspection is missing and it's useful to avoid > > keeping all state in the driver. > > I don't get it, can you please elaborate? I mean --show-coalesce -- MST
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