Re: [Sugar-devel] poor man's mmap "sliding window" on Python 2.5.x
On Tue, Jul 7, 2009 at 9:23 AM, Martin Langhoff wrote: > Thanks for looking into this. I'll post the (trivial, really) repro > code I have later (I'm on a gruelling >35hr trip at the moment). Had some time to retest this on the plane, and I think it was mis-diagnosis. The original code I was testing is lost. In re-testing this I find that the problem is more nuanced, and I may have been wrong: looking at 'top', the kernel does not appear very eager to discard old mapped pages. The process is doing a linear read through the file, and is slow enough that it appears only to grow. But if I run another process that allocates a lot of memory, then the kernel does discard pages pages. A good way of monitoring this seems to be: watch --differences grep -A8 /proc//smaps So the mmap does the right thing. ACCESS_READ doesn't seem to make any difference. #!/usr/bin/python import mmap import sys def mmap_to_death(fpath): fh = open(fpath, 'r+') mm = mmap.mmap(fh.fileno(), 0, access=mmap.ACCESS_READ) l = len(mm) c = 0 buf = '' while c < l: buf = mm[c] c = c+1 mm.close() fh.close() mmap_to_death(sys.argv[1]) m -- martin.langh...@gmail.com mar...@laptop.org -- School Server Architect - ask interesting questions - don't get distracted with shiny stuff - working code first - http://wiki.laptop.org/go/User:Martinlanghoff ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Boomingbang project- err BAD ZIP FILE
Hi, preciously, when i try to install the x windows system 'x-1.xo' the message appears in the terminal after several lines after names of some python files, -bad zip file. . . Zipfile.badzipfile. . .blah blah blah. I am running default version of sugar which came pre-installed on my xo. I think it is 8.2.0. Thanks in advance:) cheers. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Touch-screen OMAP3-based netbook as XO-2 prototype?
The new "Touch Book" by "Always Innovating" looks interesting as a possible prototype for the XO-2. It looks vaguely like an ordinary netbook, but the electronics are behind the screen as in the XO-1, as is one of the batteries. So the keyboard half can detach from the screen/electronics package. The two are connected via USB (and the keyboard provides a second battery, doubling life to 10 hrs). $299 in quantity one ($399 with keyboard). Fanless, uses TI OMAP3, internal SDHC card for storage, internal USB slots for connectivity. Open source oriented company, running Linux, XFCE, etc (Ångström Distro, which started from OpenEmbedded). They are willing to license the hardware design, or even give it away to open-source-oriented projects. Motherboard is tiny; photo below. http://www.alwaysinnovating.com/home/ http://www.alwaysinnovating.com/company/design.htm http://www.magniel.com/omaplaptop.html What it doesn't have that the XO-2 wants: * Multi-touch or all-fingers touch-screen-keyboard. * Mary Lou's screens. * Camera * Two screens (however I bet you could attach two of them to each other with a little bit of USB host/host connection glue). FYI. John ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
OLPC Volunteer Infrastructure Group Meeting: [Today]
The Volunteer Infrastructure Group (/gang) Meeting is today (July 7th) at 4pm (EST) The Volunteer Infrastructure Group is a team of Volunteer Sysadmins who help maintain services and systems around OLPC and the OLPC/SugarLabs community. The weekly VIG meeting is an excellent chance to get involved, or to be aware of upcoming projects. http://wiki.laptop.org/go/OLPC:Volunteer_Infrastructure_Group http://vig.laptop.org/ http://meeting.laptop.org/olpc-admin/ http://idea.laptop.org/ideatorrent/ideatorrent/vig/ http://embed.mibbit.com/?server=irc.oftc.net&channel=%23olpc-admin&noServerTab=false&noServerNotices=true&noServerMotd=true&nick=Guest Agenda: * meeting: new face for olpc-admin * idea: promote picture * vig and wiki (testwiki): update * bigsister: new VM other: rt maps treehouse asterisk backup vellum one/groups Meeting Details: Date: June 9th, 2009 Time: 16:00 EST Location: irc.oftc.net #olpc-admin or click on -> http://embed.mibbit.com/?server=irc.oftc.net&channel=%23olpc-admin&noServerTab=false&noServerNotices=true&noServerMotd=true&nick=Guest cu dogi ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Boomingbang project- err BAD ZIP FILE
You should generally be installing .xo bundles with the Browse activity. It will load them into your Journal. You can launch them from there. Can you confirm that that is working before we try to debug further. On Tue, Jul 7, 2009 at 8:31 AM, Abhishek Indoria wrote: > Hi, preciously, when i try to install the x windows system 'x-1.xo' > the message appears in the terminal after several lines after names of > some python files, -bad zip file. . . Zipfile.badzipfile. . .blah blah > blah. I am running default version of sugar which came pre-installed > on my xo. I think it is 8.2.0. Thanks in advance:) cheers. > -- Walter Bender Sugar Labs http://www.sugarlabs.org ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: IP addressing + XO MPP connectivity
Hi John,
On Tue, 2009-07-07 at 02:03 -0400, John Watlington wrote:
>If you are getting a self-assigned IP address, it is
> because the laptop is not discovering the MPP.
> This is probably due to a short cut in the MPP
> discovery process.
The NM-0.6 code *definitely* ignores the IP address assigned from the
MPP DHCP server.
some snippets
case MESH_S3_XO_MPP:
/* Kill dhclient; we don't need it anymore after MPP discovery here
* because we're ignoring the returned lease.
*/
nm_dhcp_manager_cancel_transaction (dhcp_manager,
nm_device_get_iface (NM_DEVICE (self)));
...
if (self->priv->step == MESH_S3_XO_MPP) {
/* Step 3 (XO_MPP) ignores the IP address provided in the DHCP
response,
* so we still have to do autoip.
*/
if (!aipd_exec (self)) {
nm_warning ("Activation (%s/mesh): couldn't start
avahi-autoipd.",
> The XS server software should set up any mesh interfaces
> to accept the anycast MAC address, but this might have
> been lost in more recent builds.
The XS connectivity scenario is a totally different case, where the DHCP
lease is indeed received and applied. The code differentiates between
"school mesh" and "mesh portal" (and the anycast addresses are
different).
However I think you have indirectly explained why the MPP lease is
ignored... you are accounting for the case where there are multiple MPPs
all on 1 channel, therefore two MPPs could give the same IP address to 2
different XOs. autoipd presumably has some magic to avoid IP conflicts.
And this is a pain to implement so it will probably not happen this time
around... but I should be able to keep the school mesh case.
Daniel
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Re: Boomingbang project- err BAD ZIP FILE
On Mon, Jul 6, 2009 at 11:45 PM, Abhishek Indoria < hackerboymaya...@gmail.com> wrote: > From: Abhishek Indoria > Date: Mon, 6 Jul 2009 18:24:36 +0500 > Subject: err BAD ZIP FILE in .xo files > To: contribut...@laptop.org > > Hi,sorry for formatting, sent from cell. Now, when i try to > install any .xo file after > i've installed the key, a message appears in terminal,- file is not a > zip file, zipfile.badzipfile : file is not a .. So how can i install > activities? Also, kindly tell of a way to boot XO via some other os > with usb. Cheers:) > > -- > Abhishek Indoria > Head > Phoenix Team A bit more context please. How are you installing which .xo bundles onto what version of Sugar? -walter -- Walter Bender Sugar Labs http://www.sugarlabs.org ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [Server-devel] IP addressing + XO MPP connectivity
On Tue, Jul 7, 2009 at 8:03 AM, John Watlington wrote: > The XS server software should set up any mesh interfaces > to accept the anycast MAC address, but this might have > been lost in more recent builds. Interesting. When was this last seen to work? I can do some quick archeology and resuscitate needed bits.. cheers, m -- martin.langh...@gmail.com mar...@laptop.org -- School Server Architect - ask interesting questions - don't get distracted with shiny stuff - working code first - http://wiki.laptop.org/go/User:Martinlanghoff ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
