On Mon, 2008-09-29 at 11:34 +0000, Michael Lawnick wrote: > Joakim Tjernlund <joakim.tjernlund <at> transmode.se> writes: > > > > > On Mon, 2008-09-29 at 08:45 +0000, Michael Lawnick wrote: > > > Hi *, > > > > > > please feel free to correct me if I tell sh**: > > > As far as I was told, bad JFFS2 boot performance of u-boot is result of > > > not > > > supporting summary. (Because there is no JFFS2 but only JFFS support?) > > > > It is not missing SUMMARY, it is excessive scanning of empty flash > > blocks. Look at jffs2/scan.c, it only scan the first 4KB or before > > declaring the block empty. > > Ok, did I get you correct: > The performance difference between u-boot and linux is based on skipping > senseless scans of empty blocks? > I've taken a little look into scan.c > The comment "The code lacks more or less any comment, and is still arcane and > difficult to read in places." doesn't make me happy. > > Has anybody tried to (and succeeded in) speed up u-boot?
Yes, there was an attempt some time ago(months or a year, dunno) where someone had improved scanning dramatically, patch was posted to the u-boot list. Can't remember who though. Jocke _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
