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Date:      Mon, 24 Aug 2015 22:13:05 +0000
From:      Eric Joyner <ricera10@gmail.com>
To:        Slawa Olhovchenkov <slw@zxy.spb.ru>, stable@freebsd.org
Subject:   Re: dev.ix.0.queueX.interrupt_rate
Message-ID:  <CA%2Bb0zg9YpHbx0fMtyF5JoYtLL9BL5AsFYyTUGOCf2RcMt-KN8g@mail.gmail.com>
In-Reply-To: <20150824192926.GL3158@zxy.spb.ru>
References:  <20150824192926.GL3158@zxy.spb.ru>

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What's strange about it? The interrupt rate only changes if traffic goes
out on the queue, and so if whatever applications you use don't utilize the
core the queue is bound to, then the interrupt rate won't change.

Or are you confused about the units? I know ixl(4) uses usecs instead of
Hz, so ix(4) should probably change to use that at some point.

On Mon, Aug 24, 2015, 12:29 PM Slawa Olhovchenkov <slw@zxy.spb.ru> wrote:

> I have '82599ES 10-Gigabit SFI/SFP+ Network Connection' and see
> strange:
>
> # sysctl dev.ix.0 | grep interrupt_rate
> dev.ix.0.queue7.interrupt_rate: 500000
> dev.ix.0.queue6.interrupt_rate: 500000
> dev.ix.0.queue5.interrupt_rate: 31250
> dev.ix.0.queue4.interrupt_rate: 31250
> dev.ix.0.queue3.interrupt_rate: 31250
> dev.ix.0.queue2.interrupt_rate: 500000
> dev.ix.0.queue1.interrupt_rate: 500000
> dev.ix.0.queue0.interrupt_rate: 500000
>
> Last -stable, no tuning. Is this normal?
>
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