Messages in this thread | | | Date | Sat, 22 Oct 2005 21:59:23 +0200 | From | Vladimir Lazarenko <> | Subject | Re: sata_nv + SMP = broken? |
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>>>>>Yesterday I've tried launching various kernels on Ahtlon64 Dual-core >>>>>X2 3800+ with MSI Neo4 Platinum SLI motherboard. >>>>> >>>>>The results were a total catastrophica failure. As soon as I enable >>>>>SMP in the kernel, the sata driver would randomly hang after a bit of >>>>>disk activity. >>>>> >>>>>Whenever apic is enabled, the system won't even be able to boot up >>>>>completely, and will hang VERY soon. Whenever I disable apic, the >>>>>system is able to bootup, but when the software mirror that I use will >>>>>try to resync for 2-3-10 mins, it will throw up a message and freeze >>>>>again. >>>>> >>>>>Whenever I disable apic AND lapic, the system is able to bootup AND >>>>>work, however after same 5-10 minutes it start spitting messages, >>>>>which are somewhat different thou and don't hang the system completely >>>>>but render it rather unusable anyway. >>>>> >>>>>As soon as I disable SMP - everything works like a charm. >>>>> >>>> >>>>I too am running an Athlon X2 using sata_nv. I have an ASUS motherboard. >>>>But what I noticed was that the problem went away if I used 2 gigs of >>>>ram instead of 4 gigs. When you use the whole 4 gigs there is some >>>>memory mapping going on and I thought perhaps the problem was related to >>>>the sata_nv not liking the memory mapped over the 4gig barrier. >>> >>>That's possible. Unfortunately I cannot verify this, since there are 2GB of >>>RAM in my box. >>> >>>I remeber someone having a problem with sata_nv DMAing over 2GB of RAM, >>>so there may be something wrong with it. >> >>On a second thought. Why would that only occur in SMP mode? Since now >>the box is with 3G ram, no SMP and it works like a charm. If I enable >>SMP - the hell breaks loose. > > > It looks like an obscure issue. Apparently, to trigger it you need _both_ > more that 2GB of RAM and SMP.
Looks like it. I played around today as well, and it seems to not to occur with 2Gb.
> OTOH, today I played with Tyan Thunder K8WE, based on the Nvidia > CK8-04 chipset (not that much different to the regular Nforce4) in > a 2-processor configuration and 8GB of RAM, and it had no issues at all > (I installed SuSE 9.3 with the distro kernel on it). Anyway its SATA > controller is handled by the sata_nv driver, so the problem you describe > does not seem to be software-related.
Hehe, as if reading your mind I ordered Tyan K8E today, and in case that won't work, i'll just put a pci raiser there and stuck an external SATA from silicon image or promise there :)
I've heard from another person (thou have not seen it myself) that there was kind of the same problem (hanging sata) on an opteron-based machine. I was too late to ask the mb model thou, so this info is kind of useless, but just for statistical purposes I mention it here.
> [Jeff, could you please say if this is a known problem?]
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