On 20.11.2013 16:31, Jakub Jermar wrote: > On 20.11.2013 16:23, Dominik Taborsky wrote: >>> On 19 November 2013 19:32, Dominik Taborsky <[email protected]> wrote: >>> >>>> Hello, >>>> >>>> I am experiencing very slow file copying. Even a few tens of KiBs takes >>>> seconds, about 25MB is taking two hours and still isn't complete. >>>> >>>> >>> Hi, what filesystem have you used for testing? Last time I saw the code, >>> FAT for example was very slow, due to taking the simple-but-slow-as-hell >>> approach. I suspect even other filesystems have big margins for >>> improvement. >>> >>> -- Jirka Z. >> >> I am actually using FAT. I guess that's explains it, thanks. > > On FAT, there used to be the following issue, but got fixed in 2010: > > http://www.jakubsuniversalblog.blogspot.cz/2010/08/fat-on-diet.html > > Maybe it broke again or something is defeating the way the fix is > supposed to work. In any case, two hours seems way too much.
Hm. I am actually not sure how to reproduce this. With the current mainline configured to boot from FAT16 and /app /srv and /drv deleted to make some space, I can create a 10M file within 10 or so seconds. This file can be copied to another file within some 60 seconds, which kind of corresponds to the measurements in the blog. Can you replicate this behavior with a 10M file too? Also, what branch is this? If it is not mainline, when did you merge with mainline for the last time? Jakub _______________________________________________ HelenOS-devel mailing list [email protected] http://lists.modry.cz/listinfo/helenos-devel
