[Sugar-devel] improving graphics performance
Hi, if anyone has the time and interest to improve graphics performance of Sugar on the XO and other limited hardware, please consider reading this post from Cairo's Carl Worth: http://cworth.org/intel/performance_measurement/ Would be specially valuable to do separate profiling of librsvg. Thanks, Tomeu ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] possible foundation for an email activity
Den 2009-05-24 07:46, Albert Cahalan skrev: Evolution also happens to mangle mail in ways that hinder full participation in many Open Source mailing lists. That's Thunderbird (which I'm using right now), I think. The Evolution email editor is a wonderful compared to Thunderbird's. /abo ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] GSoC Groupthink Update: SharedTextDemo-2
On Sat, Jun 13, 2009 at 3:45 PM, Benjamin M. Schwartzbmsch...@fas.harvard.edu wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 SharedTextDemo-2 is now available at http://dev.laptop.org/~bemasc/SharedTextDemo-2.xo. This version is functionally identical to (and even protocol-compatible with) version 1. However, I have redesigned the entire operational transformation engine. The new algorithms are still O(N), and the demo is still too slow to write a whole essay. However, I can now recommend Groupthink's SharedTextView to anyone who wants instant collaboration in a GTK TextView, and is editing less than 1 Kilobyte of text (on an XO-1, or proportionally more on more powerful machines). Sounds great! Are you expecting more performance gains in the future? Is there a git repository somewhere I could check out? bobby Please contact me if you would like help using Groupthink in your activity. The new algorithms are moderately interesting. I have completely removed all explicit trees, and all walking of trees. Instead, the new algorithm maintains two Lists, and a Dict for their inverted index. This allows determining the Nth character, locating an existing edit, or computing a new edit, in constant time. Actually performing an edit requires O(N) time, but the O(N) component is now a small, simple loop. I am hopeful that these algorithms are amenable to integration with a self-balancing tree (most likely a customized variant of a Rope), for log-time performance on all operations. Time permitting, I may implement this. - --Ben -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.11 (GNU/Linux) iEYEARECAAYFAko0Ac8ACgkQUJT6e6HFtqTdLQCfaUT9HilltmtM0803ZGv4Ja4t bpQAn1LQKDMy1DvD845J8X722m6ayKuv =ZBzM -END PGP SIGNATURE- ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] GSoC Groupthink Update: SharedTextDemo-2
Bobby Powers wrote: Sounds great! Are you expecting more performance gains in the future? Only if someone implements them! Is there a git repository somewhere I could check out? Yes! http://dev.laptop.org/git/projects/dobject/ --Ben signature.asc Description: OpenPGP digital signature ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] GSoC Groupthink Update: SharedTextDemo-2
On 15 Jun 2009, at 01:59, Benjamin M. Schwartz wrote: Bobby Powers wrote: Sounds great! Are you expecting more performance gains in the future? Only if someone implements them! Definitely has my interest!! Useful collaboration is _really_ tough, your Groupthink potentially offers a generalised sync solution for many Activity authors. Concrete example for me: It would seem to make a good collaboration back end for Labyrinth mind-maps. Mind-maps are generally fairly small (XML) documents (at least good ones are). Labyrinth does support adding drawings and images as nodes, but I can try to deal with those as unique hashed text identities for collaborative sessions, and transfer/ sync their actual raw content via other mechanisms when they change. Would be great to have the ability for a handful of folks to collaborate on creating mind-maps together in realtime. Regards, --Gary Is there a git repository somewhere I could check out? Yes! http://dev.laptop.org/git/projects/dobject/ --Ben ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] GSoC Groupthink Update: SharedTextDemo-2
Gary C Martin wrote: On 15 Jun 2009, at 01:59, Benjamin M. Schwartz wrote: Bobby Powers wrote: Sounds great! Are you expecting more performance gains in the future? Only if someone implements them! Definitely has my interest!! Useful collaboration is _really_ tough, your Groupthink potentially offers a generalised sync solution for many Activity authors. Concrete example for me: It would seem to make a good collaboration back end for Labyrinth mind-maps. Mind-maps are generally fairly small (XML) documents (at least good ones are). Labyrinth does support adding drawings and images as nodes, but I can try to deal with those as unique hashed text identities for collaborative sessions, and transfer/sync their actual raw content via other mechanisms when they change. Would be great to have the ability for a handful of folks to collaborate on creating mind-maps together in realtime. I agree. In fact, in groupthink_base.py there's an implementation of a shared Tree (in the graph-theoretic sense), which I wrote while trying to add collaboration to Tomeu's mind-map activity.* Structures for sharing arbitrary blobs would definitely be a welcome addition to Groupthink. --Ben *: There's also a SharedTreeStore in gtk_tools.py, wrapping the shared tree into the gtk TreeStore interface. However, neither data structure is at all tested, and both are probably full of bugs. I never got to try integrating this with Tomeu's activity, because I do all my testing on XOs, and the activity wouldn't run on 0.82 signature.asc Description: OpenPGP digital signature ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
