| === ericm-Zzz is now known as ericm|ubuntu | ||
| === asac_ is now known as asac | ||
| GrueMaster | Daviey: I'll start looking at them this week. Just returning from holiday/vacation. Need a vacation just to relax from the vacation. | 02:25 |
|---|---|---|
| === Jack87|Away is now known as Jack87 | ||
| === Jack87 is now known as Jack87|Away | ||
| === Jack87|Away is now known as Jack87 | ||
| === panda is now known as Guest64421 | ||
| === jcrigby_ is now known as jcrigby | ||
| === Jack87 is now known as Jack87|Away | ||
| Daviey | ogra_: Do you have a minute? | 09:45 |
| Daviey | ogra_: I was hoping you could help me with qemu-system-arm? :) | 09:45 |
| ogra_ | Daviey, whats up ? | 11:42 |
| Daviey | ogra_: I'm really sucking in trying to get either the server cloudimg's or the core images running in qemu-system-arm | 11:45 |
| Daviey | They don't seem to output to tty.. and i couldn't get data over serial. | 11:45 |
| Daviey | So i'm not convinced i'm doing it right. | 11:45 |
| Daviey | I've been trying versatile(a|p)b | 11:46 |
| ogra_ | on what host ? | 11:46 |
| Daviey | amd64 | 11:46 |
| ogra_ | versatile is rather dead | 11:46 |
| ogra_ | no, which release i mean :) | 11:46 |
| ogra_ | (on the host) | 11:46 |
| Daviey | Oh, oneiric | 11:46 |
| ogra_ | ah, better use vexpress | 11:46 |
| Daviey | vexpress is the favoured machine? | 11:47 |
| ogra_ | right, omap should also work i think | 11:47 |
| nicofs | I am having issues installing libscrollkeeper0 from karmic/lucid repos. all i get is 404... what can i do? | 11:48 |
| Daviey | ogra_: Could i ask you to try, http://cloud-images.ubuntu.com/oneiric/20110821-armel/oneiric-server-cloudimg-armel.tar.gz (tarball contains a disk img and kernel)) | 11:48 |
| ogra_ | phew, sure, let me install the qemu stuff, i havent used that since a year or so | 11:49 |
| ogra_ | hmm, though i have no oneiric x86 machine | 11:49 |
| Daviey | ogra_: I can give you ssh access to a virtual machine if that helps? | 11:50 |
| Daviey | but no graphical interface if you want that | 11:50 |
| ogra_ | nah, let me roll an oeniric chroot quickly | 11:50 |
| Daviey | ogra_: expect beer. | 11:50 |
| ogra_ | Daviey, oh, btw, http://cdimage.ubuntu.com/ubuntu-server/daily-preinstalled/20110822/ ac100 images ... (they dont work yet, but are close) | 12:01 |
| Daviey | ogra_: Oh awesome! | 12:01 |
| Daviey | ogra_: although, for bare metal arm - i care more about the images working through D-I. :/ | 12:02 |
| ogra_ | indeed | 12:03 |
| ogra_ | we dont use them yet untl we have real arm server HW ... | 12:03 |
| Daviey | .. unless someone writes a pxe enabled dd script :) | 12:03 |
| ogra_ | thats trivial | 12:03 |
| === zyga is now known as zyga-siesta | ||
| ogra_ | Daviey, so how is your image expected to work ? for the beagle emulation you need a full disk image with boot partitions | 12:32 |
| ogra_ | *partition | 12:32 |
| ogra_ | (containing x-loader and u-boot etc) | 12:33 |
| Daviey | ogra_: We don't have much idea :) | 12:39 |
| ogra_ | well, you should produce something similar to what we build on the imagebuilders | 12:39 |
| ogra_ | a two partition image with the boot bits in the first (vfat) partition | 12:39 |
| ogra_ | and then go from here https://wiki.linaro.org/Resources/HowTo/Qemu-beagleboard | 12:40 |
| Daviey | ogra_: I'm loathed to try and replicate what your team is doing. | 12:40 |
| ogra_ | well, probably vexpress can boot more similar to what versatile was | 12:41 |
| ogra_ | that would make it easier | 12:41 |
| Daviey | ogra_: Does it have isa-serial per chance? :) | 12:41 |
| ogra_ | no idea | 12:41 |
| ogra_ | i never used it :) | 12:41 |
| Daviey | yeah, libvirt seems to think everyone wants it :) | 12:42 |
| ogra_ | https://wiki.linaro.org/PeterMaydell/QemuVersatileExpress | 12:42 |
| ogra_ | that looks more backwards compatible to versatile than qemu | 12:42 |
| ogra_ | and it seems to be able to emulate 1G | 12:42 |
| ogra_ | heh, ..."If you want you can add "-smp 4" to make it boot as a 4-core SMP model." | 12:43 |
| Daviey | heh | 12:44 |
| Daviey | ogra_: Who would be the best person for utlemming to work with to fix our build process? | 12:44 |
| Daviey | utlemming is our cloud image master. :) | 12:45 |
| ogra_ | well, lets find a proper concept first :) | 12:45 |
| ogra_ | hummmm.... | 12:46 |
| Daviey | ogra_: Well use case is two fold: 1) Emulated ARM hardware using qemu-system-arm.. 2) Some manipulation to get it running on bare metal (probably pandaboard) via LXC. | 12:46 |
| ogra_ | we dont seem to build vexpress netinst images anymore | 12:46 |
| ogra_ | so there is no vmlinuz :( | 12:47 |
| Daviey | argh | 12:47 |
| ogra_ | i wonder if linaro has something like that | 12:48 |
| ogra_ | Daviey, so using vexpress it cant determine the filesystem of the img it seems | 13:09 |
| Daviey | argh | 13:09 |
| ogra_ | what fs is it ? | 13:10 |
| Daviey | $ file oneiric-server-cloudimg-armel.img | 13:10 |
| Daviey | oneiric-server-cloudimg-armel.img: Linux rev 1.0 ext4 filesystem data, UUID=87915972-5866-47e0-af76-306c3a1143b4, volume name "cloudimg-rootfs" (extents) (large files) (huge files) | 13:10 |
| ogra_ | oh | 13:10 |
| ogra_ | it doesnt try ext4 at all | 13:10 |
| Daviey | ah, ok - what should it be? | 13:11 |
| ogra_ | it checks ext2/3 above the mount error | 13:11 |
| ogra_ | [ 1.231251] No filesystem could mount root, tried: ext3 ext2 cramfs vfat btrfs | 13:11 |
| Daviey | Odd that it supports btrfs but not ext4 :/ | 13:12 |
| ogra_ | Daviey, so here is what i did ... | 13:12 |
| ogra_ | pulling the latest vexpress hwpack from http://snapshots.linaro.org/oneiric/vexpress-oneiric/20110822/0/images/hwpack/ | 13:12 |
| ogra_ | (there is sadly no "current" link and the hwpacks have version numbers in their filename) | 13:13 |
| ogra_ | unpack it, dpkg -x pkgs/linux-image-3.0.0-1001-linaro-vexpress_3.0.0-1001.1~ppa~natty_armel.deb . | 13:13 |
| ogra_ | qemu-system-arm -kernel boot/vmlinuz-3.0.0-1001-linaro-vexpress -M vexpress-a9 -cpu cortex-a9 -m 1024 -append 'root=/dev/mmcblk0 rw mem=1024M raid=noautodetect console=ttyAMA0,38400n8 rootwait vmalloc=256MB devtmpfs.mount=0' -sd oneiric-server-cloudimg-armel.img -nographic | 13:14 |
| ogra_ | ... | 13:17 |
| ogra_ | heh | 13:17 |
| ogra_ | root@osiris:/root/tmp# grep EXT4 boot/config-3.0.0-1001-linaro-vexpress | 13:17 |
| ogra_ | # CONFIG_EXT4_FS is not set | 13:17 |
| ogra_ | intresting, not even a module | 13:17 |
| Daviey | ogra_: that is great! What do we need to do, to get the hwpack into Oneiric? | 13:18 |
| ogra_ | the vexpress package might be in the archive somewhere actually | 13:18 |
| Daviey | Ah ok, does vexpress max out at 512MB of RAM like versatile? | 13:18 |
| ogra_ | there you go http://ports.ubuntu.com/pool/main/l/linux-linaro-vexpress/ | 13:19 |
| ogra_ | it should apparently support 1G | 13:19 |
| Daviey | groovy. | 13:20 |
| ogra_ | Daviey, if you download the kernel-image udeb (you can also extract that with dpkg -x), that only contains vmlinuz and System.map | 13:22 |
| Daviey | ah, worth knowing | 13:23 |
| Daviey | ogra_: So, is there a reason it shouldn't support ext4? Ie, should i raise a bug - or is there a logical reason? | 13:24 |
| ogra_ | are your instrances supposed to survive reboots ? or is it some throw away thing ? | 13:24 |
| ogra_ | i dotn see a reason to not support ext4 | 13:25 |
| ogra_ | if its throw-away i would actually go without journal, that speeds up I/O (and if you dont need reboot-recovery the journal is rather moot anyway) | 13:25 |
| Daviey | ogra_: should be persistent across reboots | 13:31 |
| ogra_ | ah, k, then better keep a journal ;) | 13:31 |
| Daviey | although perf is probably more importiant than reliability at this stage IMO :) | 13:32 |
| ogra_ | well, talk to linaor if you need config chaneges in the kernel | 13:32 |
| ogra_ | *linaro | 13:32 |
| Daviey | linaro being on a different release cycle to us kind of concerns me to rely upon their kernel TBH. | 13:33 |
| ogra_ | the packages in the ubuntu archive fall under the ubuntu release schedule | 13:34 |
| ogra_ | (not more QA than other universe packages indeed) | 13:34 |
| ogra_ | but indeed you can use omap instead, but with less ram and more complex image creation | 13:35 |
| ogra_ | (since the vm behaves exactly like a beagle you also need a matching image) | 13:36 |
| Daviey | Yeah, i want to be able to allocate as much memory as possible. | 13:37 |
| Daviey | Ieally up to 16GB :) | 13:37 |
| ogra_ | lol | 13:38 |
| Daviey | Ideally* | 13:38 |
| ogra_ | so you should go into qemu hacking and invent a VM that can do that | 13:38 |
| ogra_ | i think the vexpress is the biggest we have up to now | 13:38 |
| ogra_ | also dont expect great performance of qemu in general | 13:39 |
| nicofs | I'm trying to do "sudo -s" in console, but all i get is "sudo: must be setuid root" - what can I do? | 14:40 |
| nicofs | The system I use (Ubuntu inside maemo on N900) arrived with that glitch. I did nothing to provoke that, I can't reinstall to fix it. | 14:41 |
| rajendra | help | 14:52 |
| Daviey | utlemming: Hello! | 15:52 |
| utlemming | howdy Daviey | 15:52 |
| Daviey | utlemming: meet ogra_ and NCommander.. they are your new best friends, which we will have to buy lots of beer for at UDS> | 15:53 |
| utlemming | hello ogra_ and NCommander | 15:53 |
| Daviey | utlemming: So ogra_ managed to get your images working by doing, http://pb.daviey.com/nINF/ | 15:55 |
| Daviey | ext4 isn't supported by the kernel at this stage, which is why you've changed it to ext3. | 15:56 |
| utlemming | I just pulled ext4 out of the recipe | 15:56 |
| utlemming | and I was working on the in-image kernel | 15:56 |
| utlemming | looking at your pastebin, do we not have a working Ubuntu-provided kernel? | 15:57 |
| Daviey | You should be able to use, http://ports.ubuntu.com/pool/main/l/linux-linaro-vexpress/ | 15:57 |
| Daviey | utlemming: I got a proof of concept with openstack starting the instance, but i lucked out with the options.. If you are able to ack that process works.. we should be able to land that soon. | 15:58 |
| utlemming | yeah, the change shouldn't be too difficult. I should have confirmation shortly. | 15:59 |
| utlemming | do we not have a 3.0.0.x kernel for arm images in the ports pool? | 16:04 |
| Daviey | utlemming: apparently, https://launchpad.net/ubuntu/+source/linux/3.0.0-9.12/+build/2733971 | 16:06 |
| utlemming | ah...okay, so I was using the right kernel :) | 16:07 |
| Daviey | pass. someone from the arm team is best placed to answer that. | 16:08 |
| GrueMaster | utlemming: We do for omap/omap4, not sure why there isn't one for vexpress. | 16:09 |
| utlemming | I was building the cloud images with the omap kernel simply because it was the only one current for the 3.0.0.x kernel tree. | 16:10 |
| GrueMaster | Might be a question for ppisati. | 16:11 |
| utlemming | ppisati: can you chime in on the building of vexpress arm kernels? | 16:14 |
| === zyga-siesta is now known as zyga | ||
| NCommander | Daviey: why am I buying utlemming beer? | 16:24 |
| Daviey | NCommander: Awesome! You can buy me one aswell. | 16:27 |
| Daviey | NCommander: I think you didn't parse it correctly, beer is being provided for you, not by you. | 16:27 |
| NCommander | Daviey: er,I just asked why you are buying me beer | 16:27 |
| NCommander | oh, awesome | 16:27 |
| NCommander | yay | 16:27 |
| * NCommander got wired crashed and might be semi-sleep deprieved | 16:28 | |
| charlie-tca | Can I get one too? | 16:28 |
| Daviey | charlie-tca: no. | 16:29 |
| charlie-tca | oh, well. Worth asking, anyway :) | 16:29 |
| Daviey | charlie-tca: heh, sure you can - utlemming is buying. | 16:30 |
| * GrueMaster sighs. Everyone always ignores the QA guy when beer is involved. | 16:31 | |
| charlie-tca | +1 GrueMaster | 16:33 |
| rajendra | Hi, ogra_ | 16:35 |
| rajendra | this is regarding USB OTG | 16:35 |
| rajendra | last tuesday u had mentioned that u will update the status on USB OTG | 16:36 |
| === chuck_ is now known as zul | ||
| nicofs | How can I generate a new .Xauthority file? | 17:30 |
| utlemming | has anyone had success with the vexpress kernel and networking? | 18:42 |
| utlemming | I'm seeing "qemu: hardware error: lan9118: Unimplemented MAC register write: 9 = 0x8100" | 18:42 |
| Daviey | utlemming: lool experienced that a while ago | 19:56 |
| utlemming | Daviey: thanks | 19:56 |
| Daviey | utlemming: we need to cherry pick, http://lists.gnu.org/archive/html/qemu-devel/2011-03/msg02900.html | 19:57 |
| Daviey | Or with a better comment, http://git.linaro.org/gitweb?p=qemu/qemu-linaro.git;a=commitdiff;h=a0313c00fc | 19:58 |
| * utlemming looks to test patch | 20:01 | |
| Daviey | utlemming: If that resolves it, lets get a debdiff / branch together to upload. | 20:10 |
| utlemming | Daviey: sure thing | 20:11 |
| utlemming | Daviey: patch confirmed | 20:22 |
| Daviey | utlemming: rocking, show me the money^D debdiff | 20:27 |
| utlemming | Daviey: http://uec-images.ubuntu.com/oneiric/20110822-armel.2 (new images) | 20:33 |
| Daviey | utlemming: ROCKING.. can you throw me the qemu-system-arm command line you tested it with? | 20:33 |
| === davidm` is now known as davidm | ||
| utlemming | Daviey: give me a minute...the image isn't pinging so I think my network setup needs some work | 20:37 |
| Daviey | bah, who needs network access. | 20:38 |
| lool | utlemming: vexpress networking only half works sadly; I get some packet drops when doing a netinst :-/ | 20:43 |
| lool | utlemming: but I didn't get your failure | 20:43 |
| lool | https://bugs.launchpad.net/qemu-linaro/+bug/799757 | 20:43 |
| ubot2 | Ubuntu bug 799757 in qemu-linaro "Network unstable with vexpress model" [Undecided,New] | 20:43 |
| utlemming | lool: well then, whats your qemu invocation? | 20:44 |
| utlemming | I'm using: qemu-system-arm -kernel boot/vmlinuz-3.0.0-1001-linaro-vexpress -M vexpress-a9 -cpu cortex-a9 -m 1024 -append 'root=/dev/mmcblk0 rw mem=1024M raid=noautodetect console=ttyAMA0 ip=10.1.6.2::10.1.6.1:255.255.255.0 rootwait vmalloc=256MB devtmpfs.mount=0' -sd oneiric-server-cloudimg-armel.img -net nic,vlan=0 -net tap,vlan=0 --nographic | 20:44 |
| lool | utlemming: I'm not passing any -net, not sure what raid=noautodetect does and the one thing which is bad here is your -sd which should be -drive file=sd.img,if=sd,cache=writeback | 20:47 |
| lool | you don't actually need -cpu | 20:47 |
| lool | I believe you want console=ttyAMA0,115200 | 20:48 |
| lool | I don't know why you pass vmalloc=256MB devtmpfs.mount=0 either | 20:48 |
| utlemming | both those were feed to me by http://pb.daviey.com/nINF/ | 20:49 |
| utlemming | lool: well, that worked better | 20:50 |
| utlemming | Daviey: use qemu-system-arm -kernel boot/vmlinuz-3.0.0-1001-linaro-vexpress -M vexpress-a9 -cpu cortex-a9 -m 1024 -append 'root=/dev/mmcblk0 rw mem=1024M console=ttyAMA0,115200 rootwait ' -drive file=oneiric-server-cloudimg-armel.img,if=sd,cache=writeback --nographic | 20:52 |
| Daviey | utlemming: is this on oneiric? | 20:52 |
| utlemming | I'm using natty. Firing up oneiric now | 20:52 |
| lool | utlemming: --nographic should be -nographic | 20:53 |
| utlemming | yup, it should. But qemu didn't spawn an SDL window | 20:53 |
| Daviey | utlemming: Argh! That explains why it's not fixed for you :) | 20:55 |
| Daviey | .. and why i started ranting :( | 20:55 |
| utlemming | My pleasure to increase your stress level a bit | 20:55 |
| Daviey | utlemming: I live for stress, yeah baby! | 20:59 |
| utlemming | Asside from being _dog_ slow, I can confirm the image boots | 20:59 |
| lool | utlemming: drop -nographic if you want the SDL window | 21:00 |
| utlemming | lool: is SDL faster? | 21:00 |
| lool | no | 21:00 |
| lool | but it gives more features | 21:00 |
| lool | you can switch between qemu console, serial console and fb | 21:00 |
| lool | I usually disable graphics and use -serial stdio to get the output of ttyAMA0 on my terminal | 21:01 |
| utlemming | lool: do you have any suggestion for making it run any faster? | 21:02 |
| lool | utlemming: only use one CPU, not SMP (1 x cortex-a9 is fine); disable safe writes (-drive above); put the -sd in tmpfs; run on a fast intel box :-) | 21:03 |
| lool | utlemming: it will be slow though | 21:03 |
| lool | utlemming: some useful things can be run under qemu-arm-static instead; you will be using your intel kernel and hosts' files | 21:04 |
| lool | depends what you're doing, and some things also fail utterly in that mode | 21:04 |
| utlemming | the images are being installed under qemu-system-arm -- it takes about an hour to generate the images, but works well for debootstrap | 21:05 |
| === zyga is now known as zyga-w510 | ||
| === Jack87|Away is now known as Jack87 | ||
| === NekoXP is now known as Neko | ||
| michaelh1 | Anyone about? I'm seeing a 20 % drop in performance after updating my PandaBoard kernel to 3.0. Looking for some kernel hackers... | 23:20 |
| GrueMaster | michaelh1: Describe your test method. | 23:21 |
| michaelh1 | GrueMaster: CoreMark, which is a CPU bound benchmark. First noticed on my own NEON benchmark which shows the same results. | 23:22 |
| michaelh1 | GrueMaster: NFS root. Build CoreMark. Boot into a random 2.6.35. Run CoreMark. Boot into linux-linaro 3.0. Run same binary. Compare. | 23:23 |
| michaelh1 | GrueMaster: The bogomips in /proc/cpuinfo is also at ~80 % | 23:23 |
| michaelh1 | LP: #831683 | 23:24 |
| GrueMaster | michaelh1: I'd have to check, but I believe there was an issue with the cpu speed above 900mhz in the kernel (may have been beagleXM). | 23:24 |
| GrueMaster | lp 831683 | 23:24 |
| ubot2 | Launchpad bug 831683 in linux-linaro "Performance regression between 2.6.35 and 3.0" [Undecided,New] https://launchpad.net/bugs/831683 | 23:24 |
| GrueMaster | thanks, ubot2. | 23:25 |
| michaelh1 | Ah, that's the incantation! | 23:26 |
| michaelh1 | GrueMaster: the board is stable with a .35 kernel (it's used in a build farm and works quite hard) | 23:26 |
| GrueMaster | It is highly possible that this may be related to bug 709245 | 23:28 |
| ubot2 | Launchpad bug 709245 in linux-ti-omap4 "ARM SMP scheduler performance bug" [High,Confirmed] https://launchpad.net/bugs/709245 | 23:28 |
| GrueMaster | Try running with nosmp on the kernel cmdline and see if that helps performance. Or, try ping -f to the machine while it is busy. | 23:29 |
| michaelh1 | GrueMaster: will do | 23:32 |
| michaelh1 | GrueMaster: note that the machine is idle and this is a single threaded benchmark | 23:33 |
| GrueMaster | Well, the benchmarks we ran earlier were mainly hdparm and discovered a 10x boost with nosmp. | 23:34 |
| michaelh1 | GrueMaster: nope, nosmp has no effect. Noted on the bug. | 23:38 |
| GrueMaster | Ok. Worth a shot though. | 23:39 |
| michaelh1 | GrueMaster: is there a debug flag I can set to show the clocks/frequencies that have been set? | 23:40 |
| GrueMaster | It should be in the dmesg output or /var/log/syslog. | 23:41 |
| michaelh1 | GrueMaster: no, nothing. We'll see what people think of the bug... | 23:45 |
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