From: Jesper Dangaard Brouer <brouer@redhat.com>
To: "Paweł Staszewski" <pstaszewski@itcare.pl>
Cc: Saeed Mahameed <saeedm@mellanox.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
brouer@redhat.com
Subject: Re: Kernel 4.19 network performance - forwarding/routing normal users traffic
Date: Sat, 10 Nov 2018 22:01:31 +0100 [thread overview]
Message-ID: <20181110220131.655f7cc0@redhat.com> (raw)
In-Reply-To: <5d44e0d9-d8d3-1b07-5392-838e4096ca74@itcare.pl>
On Sat, 10 Nov 2018 21:02:10 +0100
Paweł Staszewski <pstaszewski@itcare.pl> wrote:
> W dniu 10.11.2018 o 20:34, Jesper Dangaard Brouer pisze:
> > I want you to experiment with:
> >
> > ethtool --set-priv-flags DEVICE rx_striding_rq off
>
> just checked that previously connectx4 was have thos disabled:
> ethtool --show-priv-flags enp175s0f0
>
> Private flags for enp175s0f0:
> rx_cqe_moder : on
> tx_cqe_moder : off
> rx_cqe_compress : off
> rx_striding_rq : off
> rx_no_csum_complete: off
>
The CX4 hardware does not have this feature (p.s. the CX4-Lx does).
> So now we are on connectx5 and we have enabled - for sure connectx5
> changed cpu load - where i have now max 50/60% cpu where with connectx4
> there was sometimes near 100% with same configuration.
I (strongly) believe the CPU load was related to the page-alloactor
lock congestion, that Aaron fixed.
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
LinkedIn: http://www.linkedin.com/in/brouer
next prev parent reply other threads:[~2018-11-11 6:47 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-31 21:57 Kernel 4.19 network performance - forwarding/routing normal users traffic Paweł Staszewski
2018-10-31 22:09 ` Eric Dumazet
2018-10-31 22:20 ` Paweł Staszewski
2018-10-31 22:45 ` Paweł Staszewski
2018-11-01 9:22 ` Jesper Dangaard Brouer
2018-11-01 10:34 ` Paweł Staszewski
2018-11-01 15:27 ` Aaron Lu
2018-11-01 20:23 ` Saeed Mahameed
2018-11-02 5:23 ` Aaron Lu
2018-11-02 11:40 ` Jesper Dangaard Brouer
2018-11-02 14:20 ` Aaron Lu
2018-11-02 19:02 ` Paweł Staszewski
2018-11-03 0:16 ` Paweł Staszewski
2018-11-03 12:01 ` Paweł Staszewski
2018-11-03 12:58 ` Jesper Dangaard Brouer
2018-11-03 15:23 ` Paweł Staszewski
2018-11-03 15:43 ` Paweł Staszewski
2018-11-03 12:53 ` Jesper Dangaard Brouer
2018-11-05 6:28 ` Aaron Lu
2018-11-05 9:10 ` Jesper Dangaard Brouer
2018-11-05 8:42 ` Tariq Toukan
2018-11-05 8:48 ` Aaron Lu
2018-11-01 3:37 ` David Ahern
2018-11-01 10:55 ` Jesper Dangaard Brouer
2018-11-01 13:52 ` Paweł Staszewski
2018-11-01 17:23 ` David Ahern
2018-11-01 17:30 ` Paweł Staszewski
2018-11-03 17:32 ` David Ahern
2018-11-04 0:24 ` Paweł Staszewski
2018-11-05 20:17 ` Jesper Dangaard Brouer
2018-11-08 0:59 ` Paweł Staszewski
2018-11-08 1:13 ` Paweł Staszewski
2018-11-08 14:43 ` Paweł Staszewski
2018-11-07 21:06 ` David Ahern
2018-11-08 13:33 ` Paweł Staszewski
2018-11-08 16:06 ` David Ahern
2018-11-08 16:25 ` Paweł Staszewski
2018-11-08 16:27 ` Paweł Staszewski
2018-11-08 16:32 ` David Ahern
2018-11-08 17:30 ` Paweł Staszewski
2018-11-08 18:05 ` David Ahern
2018-11-09 0:40 ` Paweł Staszewski
2018-11-09 0:42 ` David Ahern
2018-11-09 4:52 ` Saeed Mahameed
2018-11-09 7:52 ` Jesper Dangaard Brouer
2018-11-09 9:56 ` Paweł Staszewski
2018-11-09 10:20 ` Paweł Staszewski
2018-11-09 16:21 ` David Ahern
2018-11-09 19:59 ` Paweł Staszewski
2018-11-10 0:06 ` David Ahern
2018-11-10 13:18 ` Paweł Staszewski
2018-11-10 14:56 ` David Ahern
2018-11-19 21:59 ` David Ahern
2018-11-20 23:00 ` Paweł Staszewski
2018-11-01 9:50 ` Saeed Mahameed
2018-11-01 11:09 ` Paweł Staszewski
2018-11-01 16:49 ` Paweł Staszewski
2018-11-01 20:37 ` Saeed Mahameed
2018-11-01 21:18 ` Paweł Staszewski
2018-11-01 21:24 ` Paweł Staszewski
2018-11-01 21:34 ` Paweł Staszewski
2018-11-03 0:18 ` Paweł Staszewski
2018-11-08 19:12 ` Paweł Staszewski
2018-11-09 22:20 ` Paweł Staszewski
2018-11-10 19:34 ` Jesper Dangaard Brouer
2018-11-10 19:49 ` Paweł Staszewski
2018-11-10 19:56 ` Paweł Staszewski
2018-11-10 22:06 ` Jesper Dangaard Brouer
2018-11-10 22:19 ` Paweł Staszewski
2018-11-11 8:03 ` Jesper Dangaard Brouer
2018-11-11 10:26 ` Paweł Staszewski
2018-11-10 20:02 ` Paweł Staszewski
2018-11-10 21:01 ` Jesper Dangaard Brouer [this message]
2018-11-10 21:53 ` Paweł Staszewski
2018-11-10 22:04 ` Paweł Staszewski
2018-11-11 8:56 ` Jesper Dangaard Brouer
2018-11-12 19:19 ` Paweł Staszewski
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