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From: "Vinš Karel" <karel.vins@skoda.cz>
To: "'netdev@vger.kernel.org'" <netdev@vger.kernel.org>
Subject: High (200+) XFRM interface count performance problem (throughput)
Date: Tue, 23 Feb 2021 13:33:39 +0000	[thread overview]
Message-ID: <63259d1978cb4a80889ccec40528ee80@skoda.cz> (raw)

Hello,

I would like to ask you for help or advise.

I'm testing setup with higher number of XFRM interfaces and I'm facing throughput degradation with a growing number of created XFRM interfaces - not concurrent tunnels established but only XFRM interfaces created - even in DOWN state.
Issue is only unidirectional - from "client" to "vpn hub". Throughput for traffic from hub to client is not affected.

XFRM interface created with:
for i in {1..500}; do link add ipsec$i type xfrm dev ens224 if_id $i  ; done

I'm testing with iperf3 with 1 client connected - from client to hub:
2 interfaces - 1.36 Gbps
100 interfaces - 1.35 Gbps
200 interfaces - 1.19 Gbps
300 interfaces - 0.98 Gbps
500 interfaces - 0.71 Gbps

Throughput from hub to client is around 1.4 Gbps in all cases.

1 CPU core is 100%

Linux v-hub 5.4.0-65-generic #73-Ubuntu SMP Mon Jan 18 17:25:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

Thank you.

Regards
Karel Vins

             reply	other threads:[~2021-02-23 13:50 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-23 13:33 Vinš Karel [this message]
2021-02-24  8:14 ` High (200+) XFRM interface count performance problem (throughput) Eyal Birger
2021-02-24 11:02   ` [External] " Vinš Karel
2021-02-25 16:28     ` Vinš Karel

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