From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Lunz Subject: [patch] remove unused CONFIG_E100_NAPI Date: Sun, 12 Dec 2004 04:26:31 +0000 (UTC) Message-ID: Return-path: To: netdev@oss.sgi.com Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org I have an old PII nfs media server running 2.6.10-rc3 with an intel e100. Its interrupt is shared with both controllers of an siimage PCI ide card: [dunbar](1) # cat /proc/interrupts CPU0 0: 16835371 XT-PIC timer 2: 0 XT-PIC cascade 8: 4 XT-PIC rtc 10: 75 XT-PIC uhci_hcd 11: 1685559 XT-PIC ide2, ide3, eth0 15: 0 XT-PIC ide1 NMI: 0 LOC: 0 ERR: 0 With the eepro100 driver, a single tcp stream goes wirespeed in either direction (11.2MB/s). With e100, the speed fluctuates wildly without ever exceeding 2.5MB/s or so, and it averages around 1. I thought it might be due to an interaction of napi and the shared interrupt, so I tried disabling napi in the driver. Which was frustrating, because it's no longer optional, despite what Kconfig says. Jason Signed-off-by: Jason Lunz --- linux-2.6.10-rc3/drivers/net/Kconfig.pre 2004-12-11 23:11:49.000000000 -0500 +++ linux-2.6.10-rc3/drivers/net/Kconfig 2004-12-11 23:12:13.000000000 -0500 @@ -1435,23 +1435,6 @@ . The module will be called e100. -config E100_NAPI - bool "Use Rx Polling (NAPI)" - depends on E100 - help - NAPI is a new driver API designed to reduce CPU and interrupt load - when the driver is receiving lots of packets from the card. It is - still somewhat experimental and thus not yet enabled by default. - - If your estimated Rx load is 10kpps or more, or if the card will be - deployed on potentially unfriendly networks (e.g. in a firewall), - then say Y here. - - See for more - information. - - If in doubt, say N. - config LNE390 tristate "Mylex EISA LNE390A/B support (EXPERIMENTAL)" depends on NET_PCI && EISA && EXPERIMENTAL