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Date:      Thu, 16 Apr 2020 09:41:48 +0200
From:      "Kristof Provost" <kp@FreeBSD.org>
To:        "Pavel Timofeev" <timp87@gmail.com>
Cc:        freebsd-current <freebsd-current@freebsd.org>, "freebsd-stable stable" <freebsd-stable@freebsd.org>
Subject:   Re: CFT: if_bridge performance improvements
Message-ID:  <5D021E5B-8B7C-4DF2-ABC7-415A1D0F0B62@FreeBSD.org>
In-Reply-To: <CAAoTqfvKcgX8nMMZh3V3g_KUy3iwAmgBt%2BMFKfq_HOkYXMiFhw@mail.gmail.com>
References:  <5377E42E-4C01-4BCC-B934-011AC3448B54@FreeBSD.org> <CAAoTqfvKcgX8nMMZh3V3g_KUy3iwAmgBt%2BMFKfq_HOkYXMiFhw@mail.gmail.com>

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On 16 Apr 2020, at 8:34, Pavel Timofeev wrote:
> Hi!
> Thank you for your work!
> Do you know if epair suffers from the same issue as tap?
>
I’ve not tested it, but I believe that epair scales significantly 
better than tap.
It has a per-cpu mutex (or more accurately, a mutex in each of its 
per-cpu structures), so I’d expect much better throughput from epair 
than you’d see from tap.

Best regards,
Kristof



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