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Iain Buchanan <iaindb <at> netspace.net.au> writes: |
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> However, I can't find a kernel that will run both a) hyperthreading and |
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> b) suspend / resume in a stable manner! |
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Well, I'm no genius here, but, I can help you by using |
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a portable with a 3GHz HT intel processor to build |
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equivalent kernels (differing only in hardware on the mobo) |
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to test/verify your troubles, if you like. |
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>From cpuinfo: |
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model name : Intel(R) Pentium(R) 4 CPU 3.06GHz |
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stepping : 9 |
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cpu MHz : 3067.472 |
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cache size : 512 KB |
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flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat |
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pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr |
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> Here's a little table to show what I mean. The c-state patch is the one |
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> required to get HT working. With it, suspend (to disk) doesn't work, |
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> without it, usability is crap! |
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> |
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> kernel c-state patch? SMP speed suspend general |
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> 2.6.12-gr7 no fast untested stable |
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> ---------- |
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> 2.6.13-gr2 no slow stable stable |
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> 2.6.13-gr2 yes fast unstable |
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> ---------- |
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> 2.6.13-gr3 no |
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> 2.6.13-gr3 yes fast unstable unstable |
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Hm, this table looks dubious, how was the results generated, i.e. |
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which variables are quantitative(objective) and which are qualitative |
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(subjective) in nature? |
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> So, my question is: Do I have to give up suspend? (I hope not, as when |
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> it does work it works great and only takes a few seconds to suspend / |
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> start up). Is it worth a bugzilla entry anywhere? |
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Lets approach this systematically, and yes, you can/should open up |
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a trouble ticket with bugzilla. You can lead the discussion/direction |
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here on this list, as this is YOUR thread. |
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> [I'm using only the gentoo-sources for suspend, no extra patches or |
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> utilities. To suspend, I just type `echo shutdown > /sys/power/disk; |
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> echo disk > /sys/power/state` as root. |
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I use these gentoo-sources too. In fact I keep lots of different kernel |
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versions around on each machine, as I'm always noodling with kernels |
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options, patches, hacks, and sporadic assembler code.... |
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> I'm hoping there are some kernel guru's out there somewhere that can |
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> give me some pointers. |
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Folks with the sort of expertise you seek, rarely have time for |
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us commoners, in my experience....YMMV. |
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So if you are interested in a systematic approach, let's agree on |
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a common set of USE flags. |
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Here are mine from make.conf: |
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CFLAGS="-O3 -march=pentium4 -fomit-frame-pointer -pipe -g" |
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CHOST="i686-pc-linux-gnu" |
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I do not deviate from these for any code/packages I build |
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on this Intel ht portable. |
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The kernel versions we can use |
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(for example both a gentoo-sources 2.6.12-r9 ( I use |
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on a variety of systems.) and 2.6.13-r3). Build both and let's |
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use a common set of tools for testing and evaluation. |
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Send me your .config for each, privately, unless the list |
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wants those files or relevant portions thereof. |
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Let's also agree on how what we use as testing tools, I use |
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KDE and it has many gui related front-end apps. that can |
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be used to interface to ACPI. |
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Interested in this approach? |
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James |
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-- |
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