From: "Denys Fedoryshchenko" <denys@visp.net.lb>
To: Francois Romieu <romieu@fr.zoreil.com>
Cc: netdev@vger.kernel.org
Subject: Re: NAPI, rx_no_buffer_count, e1000, r8169 and other actors
Date: Mon, 16 Jun 2008 00:32:17 +0300 [thread overview]
Message-ID: <20080615212939.M50716@visp.net.lb> (raw)
In-Reply-To: <20080615205710.GA9232@electric-eye.fr.zoreil.com>
On Sun, 15 Jun 2008 22:57:10 +0200, Francois Romieu wrote
> Denys Fedoryshchenko <denys@visp.net.lb> :
> [...]
> > Third host r8169 (PCI! This is important, seems i am running out of PCI
> > capacity), 400Mbit/s rx+tx summary load, e1000e interface also - around
>
> 400 rx + 400 tx or 200 rx + 200 tx ?
> Can you specify the packet rate and the cpu ?
On this host 275 Mbps TX right now, 152 Mbps RX.
After 3 minute uptime
eth0 Link encap:Ethernet HWaddr 00:18:F8:0B:46:A6
inet addr:192.168.20.10 Bcast:0.0.0.0 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:9510755 errors:0 dropped:400 overruns:0 frame:0
TX packets:9601889 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:10000
RX bytes:3768549053 (3.5 GiB) TX bytes:2251698126 (2.0 GiB)
Interrupt:21 Base address:0x4000
MegaRouter-KARAM ~ # ethtool -S eth0
NIC statistics:
tx_packets: 10336831
rx_packets: 10191781
tx_errors: 0
rx_errors: 0
rx_missed: 436
align_errors: 0
tx_single_collisions: 0
tx_multi_collisions: 0
unicast: 10183249
broadcast: 971
multicast: 7561
tx_aborted: 0
tx_underrun: 0
MegaRouter-KARAM ~ # mpstat -P ALL 1
Linux 2.6.26-rc6-git2-build-0029 (MegaRouter-KARAM) 06/16/08
00:32:08 CPU %user %nice %sys %iowait %irq %soft %steal
%idle intr/s
00:32:09 all 0.50 0.00 1.49 0.00 1.49 27.23 0.00
69.31 76659.41
00:32:09 0 1.01 0.00 0.00 0.00 0.00 43.43 0.00
55.56 61549.50
00:32:09 1 0.00 0.00 1.98 0.00 2.97 10.89 0.00
84.16 15102.97
00:32:09 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00
0.00 0.00
>
> > 200Mbps load. What is worrying me - interrupts rate, it seems generated by
> > realtek card... is there any way to drop it down?
> >
> > Also some packetloss, around 0.0005% (i prefer to have clear zero :-)) ). No
> > nat, no shapers, same kernel configuration.
>
> Can you send an ethtool -S (+ ifconfig) of the 8169 if it misses
> packets as well as the lines of dmesg which relate to the r8169
> driver ?
>
> --
> Ueimor
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
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--
Denys Fedoryshchenko
Technical Manager
Virtual ISP S.A.L.
next prev parent reply other threads:[~2008-06-15 21:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-15 20:24 NAPI, rx_no_buffer_count, e1000, r8169 and other actors Denys Fedoryshchenko
2008-06-15 20:57 ` Francois Romieu
2008-06-15 21:32 ` Denys Fedoryshchenko [this message]
2008-06-15 21:32 ` Denys Fedoryshchenko
2008-06-15 23:46 ` Ben Hutchings
2008-06-16 2:59 ` Stephen Hemminger
2008-06-16 4:05 ` Denys Fedoryshchenko
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