From: Tony Jones <tonyj@suse.de>
To: jeffrey.t.kirsher@intel.com, jesse.brandeburg@intel.com,
bruce.w.allan@intel.com, alexander.h.duyck@intel.com,
peter.p.waskiewicz.jr@intel.com, john.ronciak@intel.com
Cc: e1000-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org,
bphilips@suse.de
Subject: high latency on 82573L
Date: Wed, 1 Sep 2010 20:39:00 -0700 [thread overview]
Message-ID: <20100902033900.GA5283@suse.de> (raw)
Hi.
Since commit 6f461f6c7c (e1000e: enable/disable ASPM L0s and L1 and ERT
according to hardware errata) I'm seeing high latencies on my Thinkpad T60p.
02:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller
Subsystem: Lenovo ThinkPad T60
Flags: bus master, fast devsel, latency 0, IRQ 30
Memory at ee000000 (32-bit, non-prefetchable) [size=128K]
I/O ports at 3000 [size=32]
Capabilities: [c8] Power Management version 2
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [e0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 00-1a-6b-ff-ff-6c-7e-a4
Kernel driver in use: e1000e
# uname -r
2.6.36-rc3-0-default
# ping -c 20 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=1.06 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=1007 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=698 ms
64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=198 ms
64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=697 ms
64 bytes from 192.168.1.1: icmp_seq=6 ttl=64 time=1007 ms
64 bytes from 192.168.1.1: icmp_seq=7 ttl=64 time=690 ms
64 bytes from 192.168.1.1: icmp_seq=8 ttl=64 time=1007 ms
64 bytes from 192.168.1.1: icmp_seq=9 ttl=64 time=682 ms
64 bytes from 192.168.1.1: icmp_seq=10 ttl=64 time=1008 ms
64 bytes from 192.168.1.1: icmp_seq=11 ttl=64 time=1.03 ms
64 bytes from 192.168.1.1: icmp_seq=12 ttl=64 time=1007 ms
64 bytes from 192.168.1.1: icmp_seq=13 ttl=64 time=0.874 ms
64 bytes from 192.168.1.1: icmp_seq=14 ttl=64 time=1009 ms
64 bytes from 192.168.1.1: icmp_seq=15 ttl=64 time=1.72 ms
64 bytes from 192.168.1.1: icmp_seq=16 ttl=64 time=1006 ms
64 bytes from 192.168.1.1: icmp_seq=17 ttl=64 time=650 ms
64 bytes from 192.168.1.1: icmp_seq=18 ttl=64 time=1008 ms
64 bytes from 192.168.1.1: icmp_seq=19 ttl=64 time=642 ms
64 bytes from 192.168.1.1: icmp_seq=20 ttl=64 time=1643 ms
--- 192.168.1.1 ping statistics ---
20 packets transmitted, 20 received, 0% packet loss, time 19063ms
rtt min/avg/max/mdev = 0.874/698.661/1643.392/439.376 ms, pipe 2
This is 2.6.36-rc3 yet commit 19833b5dff (e1000e: disable ASPM L1 on 82573)
isn't having any effect for me.
For our OpenSUSE 11.3 kernels (2.6.34 based), reverting just 6f461f6c7c
solves the issue. For .36-rc3 reverting 6f461f6c7c plus of course 19833b5dff
does the trick.
I'm happy to perform any testing to help narrow this down. LMK.
Tony
next reply other threads:[~2010-09-02 3:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-02 3:39 Tony Jones [this message]
2010-09-02 18:49 ` high latency on 82573L Allan, Bruce W
2010-09-03 17:51 ` Tony Jones
2010-09-03 18:59 ` Allan, Bruce W
2010-09-08 18:21 ` Jesse Barnes
2010-09-20 22:31 ` Allan, Bruce W
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