From: Pavel Machek <pavel@ucw.cz>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: nic_swsd@realtek.com, romieu@fr.zoreil.com, netdev@vger.kernel.org
Subject: Re: Extremely bad performance with RTL8111/8168B
Date: Wed, 10 Jul 2013 15:41:04 +0200 [thread overview]
Message-ID: <20130710134104.GA4086@amd.pavel.ucw.cz> (raw)
In-Reply-To: <1373291269.4979.102.camel@edumazet-glaptop>
Hi!
> > I've small Intel desktop with RTL8111/8168B ethernet... but the
> > performance is extremely bad.
> >
> > In 3.10, I only get about 200KB/sec:
> >
> > pavel@amd:~$ scp /tmp/delme pavel@duo:/tmp
> > pavel@duo's password:
> > delme 100% 16MB
> > 236.0KB/s 01:09
> >
> > In older version, I get 1MB/s, but network fails every 10 minutes or
> > so. Card is:
> >
> > 03:00.0 Ethernet controller: Realtek Semiconductor Co.,
> > Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)
> >
> > I did install firmware-realtek package as suggested by debian
> > installer.
> >
> > Dmesg says:
> >
> > r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
> > r8169 0000:03:00.0 eth0: RTL8168d/8111d at 0xf8010000,
> > 00:27:0e:2a:43:71, XID 081000c0 IRQ 17
> > r8169 0000:03:00.0 eth0: jumbo features [frames: 9200 bytes, tx
> > checksumming: ko]
> >
> > Any ideas what is wrong?
>
> Hi Pavel
>
> I guess receiving is OK ?
Actually, receiving is slow. Transmit is ok. "duo" is "bad" machine
with RTL card.
pavel@amd:~/misc/hw/duo$ scp /tmp/delme pavel@duo:/tmp
pavel@duo's password:
delme 17% 35MB 759.1KB/s 03:39 ETA
(I aborted the copy).
pavel@amd:~/misc/hw/duo$ scp pavel@duo:/tmp/delme /tmp
pavel@duo's password:
delme 100% 34MB 11.3MB/s 00:03
pavel@amd:~/misc/hw/duo$ ping duo
PING duo (10.0.0.9) 56(84) bytes of data.
64 bytes from duo (10.0.0.9): icmp_req=1 ttl=64 time=1.17 ms
64 bytes from duo (10.0.0.9): icmp_req=2 ttl=64 time=0.737 ms
64 bytes from duo (10.0.0.9): icmp_req=3 ttl=64 time=1.17 ms
64 bytes from duo (10.0.0.9): icmp_req=4 ttl=64 time=0.608 ms
(I even out-of-tree driver for 2.6.32, and it seemed to have similar
problems.)
> It looks like TSO packets are not transmitted, so TCP only 'works'
> because retransmits use non TSO packets.
>
> Could you report "ethtool -k eth0" ?
Yes:
root@duo:~# ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: off
scatter-gather: off
tcp-segmentation-offload: off
udp-fragmentation-offload: off
generic-segmentation-offload: off
generic-receive-offload: on
large-receive-offload: off
ntuple-filters: off
receive-hashing: off
> try : ethtool -K eth0 tso off
No, that does not help:
pavel@amd:~$ scp /tmp/delme pavel@duo:/tmp
pavel@duo's password:
delme 100% 34MB 706.9KB/s 00:49
[Now... I plugged old J2585B 10/100VG PCI card into the duo...
full-height card into half-height slot, oops... only to discover that
it can't do 100mbit ethernet. I guess "100VG" means "not 100 mbit" :-(.]
Any other ideas? :-),
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2013-07-10 13:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-08 9:54 Extremely bad performance with RTL8111/8168B Pavel Machek
2013-07-08 13:47 ` Eric Dumazet
2013-07-08 22:01 ` Francois Romieu
2013-07-09 0:09 ` Pavel Machek
2013-07-09 0:12 ` Eric Dumazet
2013-07-09 9:32 ` Pavel Machek
2013-07-09 23:29 ` Ben Hutchings
2013-07-09 0:24 ` Pavel Machek
2013-07-09 2:24 ` hayeswang
2013-07-10 13:41 ` Pavel Machek [this message]
2013-07-10 19:29 ` Francois Romieu
2013-07-11 0:24 ` Pavel Machek
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130710134104.GA4086@amd.pavel.ucw.cz \
--to=pavel@ucw.cz \
--cc=eric.dumazet@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=nic_swsd@realtek.com \
--cc=romieu@fr.zoreil.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).