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Date: Mon, 5 Dec 2011 08:54:54 -0600 From: Chris Adams <cmadams@...aay.net> To: Francois Romieu <romieu@...zoreil.com> Cc: netdev@...r.kernel.org, hayeswang <hayeswang@...ltek.com> Subject: Re: r8169 performance? Once upon a time, Francois Romieu <romieu@...zoreil.com> said: > Chris Adams <cmadams@...aay.net> : > [...] > > On the "problem" computer (on Fedora 16, kernel 3.1.2): > > > > [ 7.101106] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded > > [ 7.102665] r8169 0000:02:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 > > [ 7.107308] r8169 0000:02:00.0: setting latency timer to 64 > > [ 7.107370] r8169 0000:02:00.0: irq 42 for MSI/MSI-X > > [ 7.107703] r8169 0000:02:00.0: eth0: RTL8168d/8111d at 0xffffc900112fc000, 00:19:66:f2:dc:0b, XID 081000c0 IRQ 42 > > > > On the "okay" computer (on Fedora 14, kernel 2.6.35.14): > > > > [ 9.053574] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded > > [ 9.053594] r8169 0000:06:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 > > [ 9.053689] r8169 0000:06:00.0: setting latency timer to 64 > > [ 9.053740] r8169 0000:06:00.0: irq 47 for MSI/MSI-X > > [ 9.053830] r8169 0000:06:00.0: eth0: RTL8168d/8111d at 0xffffc90012998000, 6c:f0:49:b7:67:91, XID 083000c0 IRQ 47 > > Almost the same: RTL_GIGA_MAC_VER_25 versus RTL_GIGA_MAC_VER_26 (faster). Ahh, my eyes didn't see that one bit difference. > The only difference in the driver is the hw_phy_config part. There's also a difference in the interrupt handling (looks like only in the receive FIFO overflow case). Also, they load different firmware (so I guess my problem could be firmware related, which I guess only RealTek could find/fix). I guess my question is this: is there a chance this can be solved with driver changes, or should I just accept that the on-board NIC has poor performance and install an add-in NIC? -- Chris Adams <cmadams@...aay.net> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble. -- 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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