/srv/irclogs.ubuntu.com/2014/06/23/#ubuntu-kernel.txt

=== BruceMa is now known as BruceMa-afk
amitkcking: just reading about stress-ng. In CPU compute, can it generate %loading that is frequency invariant? IOW, 50% load at 2GHz != 50% load at 1GHz10:37
ckingamitk, it's not intelligent like that, it just breaks the load into time slices of idle and loaded, so it ignores the clock freq10:40
amitkcking: ok, we've modified cyclictest for that behaviour and are current modifying rt-app to do the same10:41
amitkcking: but the memory load might be interesting, I'll check it out10:42
ckingamitk, if you see any niches where I can add more stressors let me know, I'd like to make stress-ng more useful over time10:42
amitkcking: sure, I'll play around a bit. Our focus hasn't been finding the boundaries (stressing) but more about making it easy for sched maintainers to be able to simulate typical mobile (android) behaviour on a std. linux distro - e.g. mp3 playback, web browsing.10:45
amitkcking: but i can see stress-ng being useful to setup thermal constraints, for example 10:46
ckingamitk, indeed, stress-ng was more like "how can I fully load a machine and see how much I can make the CPU and cache toasty"10:46
ckingand the old stress tool wasn't really useful enough for what I was playing with10:46
ckingmainly because I was also tinkering with thermald and I wanted to see if I could make that kick on a hot intel box10:47
rbansal1Hi10:51
rbansal1Dose someone know, when I am trying to compile Linux 3.14 kernel I get the following error : ERROR: modinfo: could not open /lib/modules/3.14.0/modules.dep 10:51
rbansal1Why this error is coming ? I tried on Ubuntu and CentOS and on both I get almost similar error10:51
rbansal1Any clue on this issue will be helpful. 10:52
=== ara is now known as Guest7746
rtgapw, I pushed the rebase to 3.16-rc2. I guess we ought to start doing some testing this week.13:27
apwrtg, yeah, it must be getting close, we should get it in the CKT PPA soon so jibel can test against it13:38
rtgapw, ah, right. I'll do that today.13:38
=== shadeslayer_ is now known as shadeslayer
rtgBenC, don't forget to give some love to powerpc64-emb13:47
BenCrtg: Right, on it, thanks13:47
rtgBenC, do you think you'll get it figured out this morning ? I'll wait on the first upload if so.13:47
BenCrtg: I’m hoping so. I’ll know more withing about 15-30 mins13:48
rtgBenC, cool, will wait for a bit then13:48
BenCrtg: This is a compile error, correct?13:50
rtgBenC, yup.13:51
rtgBenC, link error IIRC13:51
BenCrtg: Any chance you already have a log of the error?13:51
rtgBenC, hmm, probably not. all of my local build tests are fairly ephemeral. it wouldn't take but 10 minutes or so to recreate it.13:52
BenCrtg: I have a build started…13:53
BenCrtg: I have the fix…one-liner and only affects 85xx (freescale)15:11
=== hatch__ is now known as hatch
rtgBenC, cool, thats the best kind. I'll probably look at it and think, "Why couldn't I have figured that out ?"15:13
BenCrtg: The error you saw related to smp_(give|take)_timebase, correct?15:15
BenC*smp_generic_(give|take)_timebase15:15
rtgBenC, yup, thats the one15:17
BenCrtg: Patch sent to kernel-team15:21
apwsmb, hey ... we pulled a lot of VIRT* things =y is that still appropriate15:33
smbapw, I would assume yes. At least as long as we want to have boot essentials in for virt and bare-metal at the same time.15:35
smbapw, Of course you could ask me to do that part of the conf review. :)15:35
apwsmb, heh no as long as they are needed i am happy15:36
smbapw, At least I am under the impression they were. Though things can silently change, so I would not want to bet money on it15:38
infinitysmb: I'm willing to bet a lot of that stuff can be modular, but that requires more than just IRC handwaving. :P15:39
infinityLike, actual testing.  On multiple arches.  Ick.15:39
smbinfinity, A lot _can_ be modular. The problem with them was that (again at least at some point) there was nothing that would trigger them auto-load15:40
infinitysmb: Well, being auto-loaded is implied in my "can be modular" statement.  If something needs to be manually loaded, that's a no-go.15:40
smbinfinity, Ah ok. So yeah. Some may have changed but agreed, I neither would want things to change without very well tested well.  15:42
infinity"very well tested well".15:43
smbtextual deja-vu15:43
smbOr not remembering the word one typed a second ago15:43

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