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SubjectRe: Why is 2.4.32 four times faster than 2.6.14.6??
Date
On Sun, 08 Jan 2006 11:23:37 +0100, be-news06@lina.inka.de (Bernd Eckenfels) wrote:

>Willy Tarreau <willy@w.ods.org> wrote:
>> It's rather strange that 2.6 *eats* CPU apparently doing nothing !
>
>it eats it in high interrupt load. And it is caused by the pty-ssh-tcp
>output, so most likely those are eepro100 interrupts.

That would be true for either 2.4 or 2.6, no? Also it runs e100
driver, but...

2.4 dmesg:
Intel(R) PRO/100 Network Driver - version 2.3.43-k1
Copyright (c) 2004 Intel Corporation

e100: selftest OK.
e100: eth0: Intel(R) PRO/100 Network Connection
Hardware receive checksums enabled
cpu cycle saver enabled

2.6 dmesg:
[ 31.977945] e100: Intel(R) PRO/100 Network Driver, 3.4.14-k2-NAPI
[ 31.978007] e100: Copyright(c) 1999-2005 Intel Corporation
[ 32.002928] e100: eth0: e100_probe: addr 0xfd201000, irq 11, MAC addr 00:90:27:42:AA:77
[ 32.026992] e100: eth1: e100_probe: addr 0xfd200000, irq 12, MAC addr 00:90:27:58:32:D4
[ 32.186941] e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex

Are rx checksums not turned on in 2.6' e100 driver?
CPU is only pentium/mmx 233

--
Thanks,
Grant.
http://bugsplatter.mine.nu/
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