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Date: Mon, 16 Jun 2008 00:32:17 +0300 From: "Denys Fedoryshchenko" <denys@...p.net.lb> To: Francois Romieu <romieu@...zoreil.com> Cc: netdev@...r.kernel.org Subject: Re: NAPI, rx_no_buffer_count, e1000, r8169 and other actors On Sun, 15 Jun 2008 22:57:10 +0200, Francois Romieu wrote > Denys Fedoryshchenko <denys@...p.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 > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Denys Fedoryshchenko Technical Manager Virtual ISP S.A.L. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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