Re: [Qemu-block] [PATCH v8 0/2] block: enforce minimal 4096 alignment in qemu_blockalign

2015-05-13 Thread Kevin Wolf
Am 12.05.2015 um 16:30 hat Denis V. Lunev geschrieben: I have used the following program to test [...] and the amount of requests sent to disk (could be calculated counting number of lines in the output of blktrace) is reduced about 2 times. [...] Signed-off-by: Denis V. Lunev

[Qemu-block] [PATCH v8 0/2] block: enforce minimal 4096 alignment in qemu_blockalign

2015-05-12 Thread Denis V. Lunev
I have used the following program to test #define _GNU_SOURCE #include stdio.h #include unistd.h #include fcntl.h #include sys/types.h #include malloc.h #include string.h int main(int argc, char *argv[]) { int fd = open(argv[1], O_RDWR | O_CREAT | O_DIRECT, 0644); void *buf; int i =