Le Tue, 5 Aug 2008 19:04:48 -0700, "Nancy Isaac" <nancy.isaac@xxxxxxxxx> a écrit : > Problem1 : It takes about 5 minutes for me to boot up the system. > Question: Does anyone have any suggestions to reduce this time? Have a look at http://elinux.org/Boot_Time. Basically, the first step is to measure what is taking time: kernel load, kernel uncompression, kernel initialization, userspace initialization, etc. Considering the siez of your NAND flash and the use of JFFS2, the mounting process is probably taking quite some time. > The common response I get is that I should use YAFFS2. I can't find a > way to program a yaffs2 image for both kernel and rootfs from uboot. > Uboot seems to think the file system type is JFFS2 and all commands > are designed with that in mind. I'm not sure to understand. U-Boot is only supposed to Flash the kernel and the root filesystem image at a given location in Flash. Why should it require to "understand" the filesystem image format ? I would suggest asking that kind of question to the linux-embedded@xxxxxxxxxxxxxxx list, as it's kind of more advanced and specific than what the kernelnewbies list has been created for. > Problem2: After a few days of running the system while updating the > system with new releases and writing logs, we end up with a real > sluggish system. We run out of memory and when I do a slabtop, > jffs2_refblock shows something like this: I have no idea. But David Woodhouse (that you Cc'ed) will certainly answer your question. You probably should have Cc'ed the linux-mtd@xxxxxxxxxxxxxxxxxxx list as well. Hope this helps, Thomas -- Thomas Petazzoni, Free Electrons Kernel, drivers and embedded Linux development, consulting, training and support. http://free-electrons.com -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
