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[0:42] * elfgoh learns about a zen kernel today
[0:59] <hyperair> what's the difference?
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[1:27] <schiv> hyperair: you package for debian right?
[1:30] <hyperair> schiv: ye that i do. why?
[1:30] <schiv> hyperair: could you paste your LDFLAGS, thanks
[1:31] <hyperair> we don't set our LDFLAGS while packaging.
[1:31] <hyperair> the buildd does
[1:31] <elfgoh> hyperair: http://zen-sources.org/content/what-zen-sources
[1:31] <hyperair> schiv: or rather, it usually doesn't. why?
[1:32] <schiv> hyperair: so are your binaries optimised with LDFLAGS or not?
[1:32] <hyperair> i don't understand what you're talking about
[1:32] <hyperair> how do you optimize a binary with LDFLAGS?
[1:32] <hyperair> exactly what linking flags are you talking about?
[1:32] <hyperair> and what optimization?
[1:32] <schiv> -Wl, O1, --as-needed
[1:33] <hyperair> isn't -O1 a compiler option?
[1:33] <hyperair> as in CFLAGS?
[1:33] <hyperair> or CXXFLAGS
[1:33] <schiv> -_-
[1:33] <hyperair> no, i don't think we use -O
[1:33] <schiv> http://en.gentoo-wiki.com/wiki/Safe_LDFLAGS
[1:33] <hyperair> we do use --as-needed from time to time
[1:33] <hyperair> but --as-needed is not recommended as it can cause some issues with certain libraries
[1:34] <hyperair> usually if we use --as-needed, we combine it with -z defs
[1:34] <hyperair> so it's something like.. LDFLAGS = -Wl,--as-needed -Wl,-z,defs
[1:34] <hyperair> i'll have you know that libtool ignores --as-needed, though, unless you patch/hack it to work
[1:36] <schiv> yeah..the thing is most upstream code at this point of time have been ammended to honour --as-needed, to the extent that if any build fails, it's considered a bug. but i want to know if Debian et al do any other magic or their binaries =p
[1:36] <schiv> s/or/on
[1:36] <hyperair> elfgoh: that was somewhat informative but still doesn't tell me anything about *what* *exactly* the interesting tweaks are.
[1:37] <hyperair> schiv: ah. i see. so a new enough libtool honours --as-needed eh
[1:37] <hyperair> i think i've heard something about it
[1:37] <hyperair> well, in the case that we do need to honour --as-needed, we usually patch ltmain.sh to accept it
[1:37] <hyperair> there are patches floating around in packages, nautilus-share and banshee being the ones i know
[1:37] <schiv> ahh ok..i can rest in peace now.
[1:38] <schiv> s/rest in peace/rest assured/
[1:38] <hyperair> hmm why did this suddenly crop up?
[1:38] <elfgoh> hyperair: I believe one of the patches they have is BFS
[1:39] <hyperair> BFS? brainfuck scheduler?
[1:39] <hyperair> interesting
[1:39] <schiv> because Arch suddenly changed to having these optimization by default..and I don't know whether to use them for my packages =/
[1:39] <hyperair> schiv: which optimizations exactly?
[1:39] <schiv> Wl,--hash-style=gnu -Wl,--as-needed
[1:39] <schiv> particularly, I don't want to deal with --as-needed failures
[1:40] <schiv> oh and BFS is awesome
[1:40] <hyperair> is it really that awesome?
[1:40] <hyperair> have you tried it?
[1:41] <schiv> yes
[1:41] <schiv> i'm running on one now :)
[1:41] <hyperair> interesting
[1:41] <hyperair> is it stable?
[1:41] <schiv> GUI is snappier than ever before
[1:41] <hyperair> i should try it out
[1:41] <schiv> no more chokes out of nowhere
[1:41] <hyperair> where's the patch?
[1:41] <hyperair> i don't get many chokes out of nowhere to begin with
[1:41] <elfgoh> hyperair: http://zen-sources.org/content/unofficial-kernel-projects shows the kernel codes that are not in mainline i think
[1:41] <hyperair> elfgoh: ah interesting
[1:42] <schiv> http://ck.kolivas.org/patches/bfs/
[1:42] <hyperair> schiv: iirc, there were some tweaks you can add to the kernel *without* using BFS or any other patch.
[1:42] <hyperair> schiv: to achieve more or less the same effect
[1:42] <hyperair> lemme dig it up
[1:42] <hyperair> #kernel.sched_min_granularity_ns = 100000
[1:42] <hyperair> #kernel.sched_wakeup_granularity_ns = 100000
[1:42] <hyperair> i commented these out because i was concerned for my battery
[1:42] <elfgoh> hyperair: i believe http://zen-sources.org/content/official-kernel-projects list code that were formerly in Zen Kernel and not in the mainline kernel
[1:43] <hyperair> i couldn't reproduce it consistently, but my battery seemed to last shorter with those options set like that
[1:43] <schiv> hyperair: hahah no BFS is a whole new approach..just try it and see if it makes no difference
[1:43] <schiv> hyperair: but you need to be desktop user
[1:43] <schiv> be a*
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[1:47] <hyperair> elfgoh: it's got PHC! i'm sold!
[1:47] <hyperair> elfgoh: but then i've been compiling my own kernels with PHC these days
[1:48] <elfgoh> hyperair: interesting. I never knew there was a project like PHC
[1:48] <hyperair> heheh
[1:49] <hyperair> i stumbled upon it when i was trying to find a way to cool off my CPU
[1:49] <hyperair> i could get some high quality thermal gel, which i'm lazy to go find
[1:49] <hyperair> and i could clean out the fan (which i did), and undervolt (which i also did)
[1:49] <hyperair> result: my CPU no longer overheats during long compilations
[1:50] <hyperair> by overheat i mean ~80 degrees celcius, and auto-poweroff
[1:50] <hyperair> oh it also resulted in a few watts of savings which i'm not sure exactly
[1:51] <hyperair> either way, my battery lifetime shot from ~2h to ~3.5h
[1:51] <elfgoh> hyperair: wow
[1:51] <hyperair> there could have been other userspace fixes along the line though
[1:51] <elfgoh> hyperair: sounds impressive. So any idea why this isn't in the mainline kernel yet?
[1:51] <hyperair> because they think it allows you to screw yourself over too easily
[1:52] <hyperair> there aren't any stock PHC settings you can just take and use
[1:52] <hyperair> you have to find your own
[1:52] <schiv> phc works wonders..i'm using 19 19 19 19 for all freq steps til 1.6G, which is the default for 800M =p
[1:52] <hyperair> schiv: pfft. i'm using 23 1 1 1
[1:52] <schiv> doesn't solve hard disk heat though
[1:52] <hyperair> heh yeah
[1:52] <hyperair> well that one can be tuned using hdparm
[1:52] <hyperair> but don't hot hard disks last longer? ;-)
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[8:59] <triplez> ??
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[10:51] <patrickhaller> hey, is there a hackfest today? I seem to remember one at RH, but it's not on the calendar. Did it get dropped?
[10:53] <dwu> patrickhaller: Shifted to 17th :)
[10:55] <patrickhaller> ah
[10:55] <patrickhaller> dwu: thx much!
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[22:17] <dqminh> ruiwen, what is Red Hat APAC address ?
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[22:30] <ruiwen> dqminh: eh.. temasek towers i think.. 10th floor if i'm not wrong
[22:31] <ruiwen> dqminh: can ask wmealing i think
[22:31] <jmarki> yeah, temasek towers, aka the coin building
[22:31] <jmarki> 10th floor
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[23:52] <ruiwen> elfgoh: does your 1.6 update have the quick search box by any chance?
[23:53] <elfgoh> ruiwen: what's that?
[23:53] <elfgoh> did you mean the google search widget?
[23:56] <ruiwen> elfgoh: yup.. it's supposed to be some sort of universal search thingy now i think?
[23:56] <melynx> donut?
[23:56] <ruiwen> is 1.6 donut?
[23:56] <melynx> yupz
[23:56] <ruiwen> elfgoh: you're apparently supposed to get web content, alongside on-phone stuff like contacts, mails, and what-not
[23:57] <ruiwen> melynx: are you on 1.6?
[23:57] <melynx> yupz
[23:57] <melynx> why?
[23:57] <ruiwen> just curious
[23:57] <elfgoh> ruiwen: i see. yes i do have it
[23:57] <ruiwen> did you get the htc update melynx?
[23:58] <ruiwen> elfgoh: ah cool.. tried it? useful?
[23:58] <elfgoh> ruiwen: searches apps and contacts
[23:58] <melynx> ruiwen: what you mean by htc update?
[23:58] <elfgoh> ruiwen: will be useful i guess
These logs were automatically created by mooiraa on irc.freenode.net using the Java IRC LogBot.