From: Marek Behun <marek.behun@nic•cz>
To: Florian Fainelli <f.fainelli@gmail•com>
Cc: Andrew Lunn <andrew@lunn•ch>,
netdev@vger•kernel.org,
Russell King <rmk+kernel@arm•linux.org.uk>
Subject: marvell 6190 NAT performance
Date: Thu, 24 Jan 2019 21:26:40 +0100 [thread overview]
Message-ID: <20190124212640.43813222@nic.cz> (raw)
Hello,
I am encountering strange performance issue when benchmarking NAT
performance on Armada 3720 with Marvell 88e6190 switch.
Download speed (from internet, via Armada 3720 NAT, via switch to LAN
device) is ~750mbps and the CPU running on 100% (mostly in ksoftirq).
Upload speed is ~250mbps.
When the LAN device is connected to A3720 directly (via SFP), the
speeds are both ~1000mbps.
I realize that packing/unpacking packets with Marvell header for the
switch takes some time, but is such a performance drop expected?
This was tested with 5.0.0-rc2 and also 4.14.
Thank you.
Marek
next reply other threads:[~2019-01-24 20:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-24 20:26 Marek Behun [this message]
2019-01-24 21:31 ` marvell 6190 NAT performance Florian Fainelli
2019-01-25 12:09 ` Marek Behún
2019-01-29 14:27 ` Marek Behún
2019-01-29 14:56 ` Andrew Lunn
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