From mboxrd@z Thu Jan 1 00:00:00 1970 From: W. van den Akker Date: Wed, 21 Jan 2009 18:15:41 +0100 Subject: [ath9k-devel] still same problem In-Reply-To: <1232541342.6354.9.camel@jm-desktop> References: <49601028.9030201@gmail.com> <200901211111.53874.wvdakker@wilsoft.nl> <1232541342.6354.9.camel@jm-desktop> Message-ID: <200901211815.41755.listsrv@wilsoft.nl> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org On Wednesday 21 January 2009, Jouni Malinen wrote: > On Wed, 2009-01-21 at 02:11 -0800, W. van den Akker wrote: > > I have tested with 1 CPU disabled. Running now for about 2 hours without > > hangups (I have several connection drops, but it will reconnect). > > > > I have also tested with 2 CPU's and HT-disabled (noht parameter) but that > > had no effect. > > > > So SMP looks like the cause of the problem here. > > Thanks for testing this! I'm running most of my tests with a dual core > system, so SMP is being used, but with two cores, not two separate > chips. I don't think there should be much difference there, but > certainly our hardware configuration is different. > > Could you please describe your hardware with more details so that we can > see whether we could find a similar system to try to reproduce this? Is > this the IBM 206 eserver with WMP300N you mentioned in an earlier > message in the thread? That seems to be (by default) a uni-processor > setup, so I would like to make sure we understand what is the exact > hardware used here since I do not think we have been able to reproduce > this type of issue so far in any dual core systems. > Its indeed an IBM eServer x206 8482-2RX with a WMP300N (Linksys, Atheros Communications Inc. AR5416 802.11abgn Wireless PCI Adapter (rev 01). The IBM is a dual-core system with 2 CPU's on one fysical CPU-chip (its boxed so I am not for sure). /proc/cpuinfo shows (with one CPU disabled) processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 3 model name : Intel(R) Pentium(R) 4 CPU 3.00GHz stepping : 4 cpu MHz : 3000.473 cache size : 1024 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc up pebs bts pni dtes64 monitor ds_cpl cid xtpr bogomips : 6000.94 clflush size : 64 power management: lscpi -vvv for the adapter shows: 03:02.0 Network controller: Atheros Communications Inc. AR5416 802.11abgn Wireless PCI Adapter (rev 01) Subsystem: Linksys Device 0061 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx- Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR-