2008-09-27 02:12 <bh> hey
2008-09-27 02:34 -!- flips(~phillips@phunq.net) has joined #tux3
2008-09-27 02:55 -!- pranith(7aa040b1@webchat.mibbit.com) has joined #tux3
2008-09-27 02:55 <pranith> hello guys
2008-09-27 03:02 <pranith> no one is here when im around 
2008-09-27 03:02 <pranith> :(
2008-09-27 03:02 <pranith> its bad to be on the other side of the world
2008-09-27 03:08 <MaZe> yeah, we're all hard asleep
2008-09-27 03:11 <pranith> hehe
2008-09-27 03:12 <pranith> yeah
2008-09-27 03:12 <pranith> wht u doin?
2008-09-27 03:25 -!- pranith(7aa040b1@webchat.mibbit.com) has joined #tux3
2008-09-27 03:27 <MaZe> falling asleep while skimming code
2008-09-27 03:28 <pranith> hmm
2008-09-27 03:28 <pranith> which code are u skimming
2008-09-27 03:40 <MaZe> just some of the other places in the kernel which do options parsing
2008-09-27 04:01 <pranith> hmm
2008-09-27 04:01 <pranith> ok
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2008-09-27 12:19 <pranith> heya
2008-09-27 12:20 <data> hi. thought you wanted to post the univ-sessions?
2008-09-27 12:21 <pranith> yeah, i was going through them...
2008-09-27 12:22 <pranith> dint finish reading.. 
2008-09-27 13:14 <data> pranith: thanks
2008-09-27 13:15 <pranith> data, welcome
2008-09-27 13:15 <pranith> data, what do you do?
2008-09-27 13:15 <data> for tux3? nothing but reading :)
2008-09-27 13:15 <pranith> reading as in?
2008-09-27 13:16 <data> reading the channel, university sessions, some code. But it's still exam-time, and since i am double majoring i don't have that much spare time
2008-09-27 13:16 <pranith> not for tux, in gen
2008-09-27 13:17 <data> you mean what i read in my leisure time?
2008-09-27 13:17 <pranith> i meant if you went to college or something?
2008-09-27 13:17 <pranith> u are majoring in?
2008-09-27 13:17 <data> computer science and math
2008-09-27 13:18 <pranith> nice
2008-09-27 13:18 <data> so yes, university, in germany
2008-09-27 13:18 <pranith> which univ/
2008-09-27 13:18 <data> if you know it, karlruhe, technical university
2008-09-27 13:18 <data> soon to be known as KIT
2008-09-27 13:18 <data> karlsruhe, actually
2008-09-27 13:19 <pranith> hmm
2008-09-27 13:19 <pranith> ok
2008-09-27 13:20 <data> and what are youdoing?
2008-09-27 13:20 <pranith> im working
2008-09-27 13:20 <pranith> completed my bachelors recently
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2008-09-27 13:50 <data> sorry, i am not that talkative right now. still reading a little about real time systems and scheduling for my exam on monday
2008-09-27 13:50 <pranith> oh
2008-09-27 13:50 <pranith> all the best
2008-09-27 13:50 <data> thanks
2008-09-27 13:51 <data> it's not that hard, but they have a lot of analog to digital stuff in there
2008-09-27 13:51 <data> where it gets kind of hairy
2008-09-27 13:51 <data> op-amps e.g.
2008-09-27 13:52 <pranith> hmm
2008-09-27 13:52 <pranith> nice stuff
2008-09-27 13:52 <pranith> u have that in rts?
2008-09-27 13:52 <data> yes, dunno why
2008-09-27 13:52 <data> i can see the relation, but still
2008-09-27 13:52 <pranith> hmm, interesting
2008-09-27 13:53 <data> closed loop controls with their laplace transforms, z-transforms
2008-09-27 13:53 <pranith> hmm
2008-09-27 13:56 <data> oh, and one should not forget all the stuff about cnc machines, programming ofthem, robot controls and ... just too much stuff not really related to the topic
2008-09-27 14:11 <flips> the relationship between analog and realtime is deep and important
2008-09-27 14:11 <flips> filters come into realtime a lot
2008-09-27 14:12 <flips> and time derivatives and integrals
2008-09-27 14:12 <flips> your delta t has to be exact ;)
2008-09-27 14:12 <flips> or your rocket explodes
2008-09-27 14:12 <flips> file_bwrite: block write <0:0>
2008-09-27 14:12 <flips> ---- extent 0x0/4 ----
2008-09-27 14:12 <flips> balloc extent -> [2/4]
2008-09-27 14:12 <flips> segs: 0x2/4 (1)
2008-09-27 14:12 <flips> group -1/0 at entry -1/0
2008-09-27 14:12 <flips> 1 entry groups:
2008-09-27 14:12 <flips>   0/1: 0 => 2/4;
2008-09-27 14:12 <flips> file_bwrite: block write <0:5>
2008-09-27 14:12 <flips> ---- extent 0x5/2 ----
2008-09-27 14:12 <flips> balloc extent -> [9/2]
2008-09-27 14:12 <flips> segs: 0x9/2 (1)
2008-09-27 14:13 <flips> group 0/1 at entry 0/1
2008-09-27 14:13 <flips> 1 entry groups:
2008-09-27 14:13 <flips>   0/2: 0 => 2/4; 5 => 9/2;
2008-09-27 14:13 <flips> flush... Success
2008-09-27 14:13 <flips> extent writing a lot closer to working
2008-09-27 14:13 <flips> now two discontiguous extents formed and written into the dleaf
2008-09-27 14:14 <data> flips: i see the connection... learnt enough about it :0
2008-09-27 14:45 <flips> next test is to rewrite a region that already has extents
2008-09-27 14:45 <flips> and expose the next flock of bugs
2008-09-27 14:45 <flips> shapor...
2008-09-27 15:00 <flips> Ok, here we go again:
2008-09-27 15:00 <flips> ---- extent 0x0/7 ----
2008-09-27 15:00 <flips> balloc extent -> [c/5]
2008-09-27 15:00 <flips> segs: 0xc/5 0x9/2 (2)
2008-09-27 15:00 <flips> group 0/1 at entry 0/2
2008-09-27 15:00 <flips> group 0/1 at entry 0/2
2008-09-27 15:00 <flips> 1 entry groups:
2008-09-27 15:00 <flips>   0/3: 0 => 2/4 c/5; 5 => 9/2; 0 => <corrupt>;
2008-09-27 15:01 <flips> close actually
2008-09-27 15:01 <flips> well not actually
2008-09-27 15:01 <flips> buncha bugs
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2008-09-27 16:01 <bh> folks
2008-09-27 16:05 <flips> ok, let's see where this puppy strays afield
2008-09-27 16:09 <tim_dimm> flips: how far do you feel like skating today?
2008-09-27 16:10 <flips> hard to say
2008-09-27 16:10 <flips> I take it you had an adventure in mind?
2008-09-27 16:10 <tim_dimm> thinking about ti
2008-09-27 16:10 <tim_dimm> it
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2008-09-27 16:52 <flips> ok, there's the first bug, obvious enough: after retrieving an extent to see if it should be skpped, if it should not be skipped then we need to rewind before the next step, or save the extent as the current one and scan on from there
2008-09-27 16:53 <flips> maybe I should explain what I'm doing on the list so we can get a couple more hands pulling on the oars
2008-09-27 16:54 <flips> I guess it is probably better to avoid rewinds and save some cpu
2008-09-27 16:58 <flips> but then when we do rewind we need to include the extent we just found, so a rewind would have to not only reset the dwalk state but the saved extent just found there
2008-09-27 16:59 <flips> fiddly, but probably the most efficient way to do it
2008-09-27 17:03 <flips> getting close to sk8 oclock
2008-09-27 17:27 <flips> ah, dwalk_back is the answer
2008-09-27 17:27 <flips> unread the last returned extent
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2008-09-27 22:12 <bh> folks
2008-09-27 22:23 <flipsout> ok, next bug is clear
2008-09-27 22:23 <flipsout> clear braindamage
2008-09-27 22:24 <flipsout> have to truncate before repacking
2008-09-27 22:24 <flipsout> obvious :-P
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