Hi, I have been playing around with fallocate to preallocate space for a file with the mode FALLOC_FL_KEEP_SIZE. I'm running with Linux kernel 2.6.35-24 and ext4 as the fs. I'm allocating 1Gb for a newly created file and then in a loop I write 1Gb of data into that file in chunks of 1Kb. fallocate is returning me 0, therefore it was successful. However I don't see any performance gains compared to a version of that same code that doesn't call fallocate. The test code which does this is: http://friendpaste.com/2UR0n2U851u4IXmubeLZh0 Am I doing something wrong? best regards, -- Filipe David Manana, fdmanana@xxxxxxxxx, fdmanana@xxxxxxxxxx "Reasonable men adapt themselves to the world. ÂUnreasonable men adapt the world to themselves. ÂThat's why all progress depends on unreasonable men." -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
