pearce.barry at gmail.com
Fri Sep 12 19:07:17 EDT 2014
Sorry for posting this on a dev thread but can someone point me in the right direction to One Computer Per Child program (tech and non tech). I've been writing software for over thirty years and would like to become involved bit it's not clear to me how the business side and technical side operate. Any help would be greatly appreciated.
> On Sep 9, 2014, at 11:10 AM, Martin Abente Lahaye <tch at sugarlabs.org> wrote:
> Thanks for the quick reponse,
>> On Tue, Sep 9, 2014 at 10:55 AM, Peter Robinson <pbrobinson at gmail.com> wrote:
>> Hi Martin,
>> > I am have been building a Fedora 20 image for the XO4, and I am seeing
>> > memory corruption problems while running yum in these images (please check
>> > the logs [1,2]).
>> The logs don't mean anything to me. What device are you running it on,
>> how much memory, do you have swap enabled?
> It is running on a XO4, with 999MB ram and no swap. Maybe James can explain better what other specs are for the XO4.
>> > To give you some context, we are using olpc-os-builder (master ) with
>> > fc20 repositories plus a few hand-crafted packages such as the kernel,
>> > systemd and xorg, taken from previous Daniel Narvaez efforts [4,5].
>> > These crashes happens randomly when yum is running, by calling yum update or
>> > when olpc-os-build is installing system packages.
>> Yum isn't the most memory friendly, and some of the post update
>> scripts aren't either, you need to make sure there's enough
> I am not so sure this is related to memory usage really, as it happens even when I am installing just a few packages (located in FS) via "yum update /packages/*.rpm".
>> > James Cameron, who spent some time researching about this issue, speculates
>> > that this problem could be caused by: (a) using older kernel that was
>> > compiled (possibly) with different options compared to f20's, or (b) a
>> > faulty glibc library.
>> > I was wondering if this could be related to something else, something more
>> > specific to yum or python arm binaries (?).
>> Unlikely, I've not seen issues elsewhere. But I need more details.
> What kind of details would you need? I can try reproducing and send what you need.
>> > I would sincerely appreciate any guidance you can provide to start
>> > discarding possibilities and try to debug this issue.
>> > Thanks in advance for any help you can provide!
>> What version of OOB are you using, and what config files? I can try
>> and recreate the problem here on other devices.
> This problem occurs in all f20 images for the XO4 that we or others have created.
> The latest images were created using:
> * OLPC's OOB masterbranch: git://dev.laptop.org/projects/olpc-os-builder
> * OLPC's .ini file: http://dev.laptop.org/git/projects/olpc-os-builder/tree/examples/olpc-os-14.1.0-xo4.ini
> In case you have a XO4 with you, and have the time to try this out, you can download an image from http://system.one-education.org/au2a/images/testing/40002au4/
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