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Message-ID: <20080207141718.GA2030@elf.ucw.cz> Date: Thu, 7 Feb 2008 15:17:18 +0100 From: Pavel Machek <pavel@....cz> To: kernel list <linux-kernel@...r.kernel.org>, e1000-devel@...ts.sourceforge.net, john.ronciak@...el.com, jeffrey.t.kirsher@...el.com, jesse.brandeburg@...el.com, auke-jan.h.kok@...el.com Subject: e1000 1sec latency problem Hi! I have the famous e1000 latency problems: 64 bytes from 195.113.31.123: icmp_seq=68 ttl=56 time=351.9 ms 64 bytes from 195.113.31.123: icmp_seq=69 ttl=56 time=209.2 ms 64 bytes from 195.113.31.123: icmp_seq=70 ttl=56 time=1004.1 ms 64 bytes from 195.113.31.123: icmp_seq=71 ttl=56 time=308.9 ms 64 bytes from 195.113.31.123: icmp_seq=72 ttl=56 time=305.4 ms 64 bytes from 195.113.31.123: icmp_seq=73 ttl=56 time=9.8 ms 64 bytes from 195.113.31.123: icmp_seq=74 ttl=56 time=3.7 ms ...and they are still there in 2.6.25-git0. I had ethernet EEPROM checksum problems, which I fixed by the update, but problems are not gone. irqpoll helps. nosmp (which implies XT-PIC is being used) does not help. 16: 1925 0 IO-APIC-fasteoi ahci, yenta, uhci_hcd:usb2, eth0 Booting kernel with nosmp/ no yenta, no usb does not help. Hmm, as expected, interrupt load on ahci (find /) makes latencies go away. It should be easily reproducible on x60 with latest bios, it is 100% reproducible for me... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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