TheGrebs.com:IRC Logs:#uml:2005:04:05

---	Log	opened Tue Apr 05 00:00:56 2005
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03:57	alx	What's wrong with the wiki?
04:15	Darky	its down, (db error) since a few days at least
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04:52	sven	is there any way to specify the virtual machine cpu speed or some hard limit of cpu time per VM? we'd like to be able to emulate really old and crappy machines to better see the effects of protocol overhead
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08:57	sven	i found it. it's called cpucap
09:02	alx	Have you found a cpucap patch for a recent 2.6 kernel?
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09:14	sven	alx: nope
09:14	sven	alx: 2.6.6 is the last one i found, i believe
09:14	alx	That's what I found too. Shame.
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10:26	mikegrb	]
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11:05	jdike	hi guys
11:06	Newsome	hey, jdike
11:07	timster	:}
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11:44	bodo	hi all
11:44	timster	:}
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11:57	jdike	hi bodo
11:57	bodo	Hi jdike
11:58	bodo	jdike: sorry for not sending the patches yet. Had some problems with gcc today
11:58	jdike	bodo: was going to ask
11:58	jdike	bodo: np
11:59	bodo	jdike: have searched nearly all the day long to find a compiler problem known since mid 2003 :-(
11:59	bodo	jdike: stupid old SuSE distro!
11:59	jdike	bodo: hehe
12:00	bodo	jdike: and now there seems to be no fixed gcc-rpm for that distro
12:26	jdike	caker: awake?
12:42	mikegrb	jdike: he has been around this morning
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13:13	bodo	Bye.
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14:00	Mephisto	moin
14:01	caker	jdike: hello
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14:12	Mephisto	hmm... no hello for me? ;-)
14:14	Newsome	hello, Mephisto
14:14	linbot	Mephisto: hello
14:14	Mephisto	hi Newsome
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14:25	Mephisto	hmm... i can't find the "iptables" option in the UML kernel setup
14:25	Mephisto	is iptables not available for UML?
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14:30	Newsome	Mephisto: Should be in the same location as any other ARCH
14:34	Mephisto	ah... found it
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14:53	mikegrb	Mephisto: HI!
14:54	Mephisto	hi
14:55	Mephisto	another question... which is the best way to cleanly (!)) shutdown the UML system by the host system?
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15:00	zigger	I don't know if there is any way to cleanly shut down UML from the host. the best way to do it is to call halt from within UML. if for some reason you have to do it from the host, the only way that I can think of is something like killall -9 linux
15:01	jdike	mconsole cad
15:01	jdike	with the cad handler being shutdown inside UML
15:07	zigger	I just tried to rebuild my guest kernel without tt support now that I got skas up and running, but the build failed because of undefined references to tracing_pid, syscall_handler_tt, and other tt-related variables. anyone know if there's another build option I need to disable, or am I better off building my guest kernel with tt support, even though I'm never going to use it again?
15:08	jdike	zigger: you did an mrproper?
15:08	Mephisto	jdike: thx
15:09	zigger	not sure what you mean. did a make xconfig ARCH=um, took out that one option, then did make linux ARCH=um
15:15	zigger	nm, I figured out what you meant. you can tell that I've done a lot of kernel building in my day :) trying to rebuild the guest now, again without tt support. I'll let you know if it works
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16:09	jdike	HAHAHA
16:10	jdike	root 158 19.6 0.9 2104 1252 tty0 R 16:59 0:23 -bash
16:10	jdike	root 163 10.3 0.9 2096 1248 tty5 R 16:59 0:12 -bash
16:10	jdike	root 185 23.8 0.6 1808 800 tty5 R 17:00 0:11 bash -c while tru
16:11	jdike	163 and 185 are in a separate compartment from 158 and should together be getting the same CPU as 158
16:12	jdike	and the compartment is made with a virtualized scheduler
16:12	Newsome	compartment?
16:13	jdike	Newsome: a guest scheduler running as a process on the main scheduler
16:13	Newsome	ooh, that sounds cool
16:13	jdike	Newsome: it gets CPU from the host scheduler, and uses that for its own processes
16:13	Newsome	at least in theory, right?
16:13	jdike	Newsome: so the group of processes in the guest scheduler competes as a single process on the host scheduler
16:14	jdike	and in practice, it seems
16:14	Newsome	okay. nice
16:14	jdike	now, they're 1:14, 1:15, and 2:29
16:14	jdike	exact to the second
16:15	Newsome	Will this give better UML performance?
16:16	jdike	Newsome: not directly related to UML yet
16:16	Newsome	oh, okay
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16:16	jdike	Newsome: I'm heading off CKRM
16:27	caker	jdike: what's the status of the aio stuff?
16:30	jdike	caker: supposedly works, but I haven't proved that on 2.6 because my 2.6 test box is x86_64, on which UML needs updating
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19:14	brum	hello
19:15	brum	I have installed the dnsutils package on a UML running woody, but when I run 'nslookup' the UML hangs.
19:15	brum	can someone help me with this please?
19:19	Newsome	brum: Is networking set up otherwise?
19:20	Newsome	brum: "hangs" as in stops responding completely?
19:21	brum	Newsome: thanks for asnswering. Yes, networking is setup , I have installed the package via apt-get
19:21	brum	Newsome: it 'hangs' , that is it's not responsive, I cannot even ping it from the host machine
19:22	Newsome	and before running nslookup, you can ping it from the host machine?
19:22	brum	yes
19:22	Newsome	okay
19:23	Newsome	do you have a /lib/tls directory?
19:23	brum	also, host and dig have the same effect
19:23	brum	I have ran an strace on 'host www.google.com' and it exists just fine. and I can also see the results. If I run 'host www.google.com' without strace it hangs
19:24	Newsome	do you have a /lib/tls directory?
19:25	brum	no , I don't have /lib/tls
19:25	Newsome	hmm, okay
19:25	brum	is that /lib/tls on the host or on the UM:?
19:25	brum	uml
19:25	Newsome	in the UML
19:25	brum	no matter, it's on neither of the two
19:26	brum	oh, I lied, it's on the host machine
19:26	Newsome	that should be okay
19:27	brum	any ide what might cause the lockup?
19:27	brum	also if I start the named on the Uml it hangs
19:31	brum	can you give me a clue?
19:32	Newsome	my guess would have been that it was trying to use the TLS-enabled library
19:33	caker	brum: uml guest version?
19:33	brum	how do I find that?
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19:34	Newsome	./linux --version
19:35	brum	2.4.26-3um
19:35	brum	it's from Debian Sarge
19:39	caker	brum: might be worth trying http://www.theshore.net/~caker/uml/kernels/2.4.29-linode39-1um
19:42	brum	caker: thanks. I will try that right now. what do you think could be the problem?
19:43	caker	brum: dunno -- maybe an outdated UML from debian
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20:09	brum	brum caker: thanks. I got your 2.4.26-linode32-2um and that works just fine
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---	Log	closed Wed Apr 06 00:00:30 2005