1 #DESCRIPTION:ltp A-sync IO Stress IO tests 2 # 3 # aio-stress [-s size] [-r size] [-a size] [-d num] [-b num] 4 # [-i num] [-t num] [-c num] [-C size] [-nxhlvOS ] 5 # file1 [file2 ...] 6 # -a size in KB at which to align buffers 7 # -b max number of iocbs to give io_submit at once 8 # -c number of io contexts per file 9 # -C offset between contexts, default 2MB 10 # -s size in MB of the test file(s), default 1024MB 11 # -r record size in KB used for each io, default 64KB 12 # -d number of pending aio requests for each file, default 64 13 # -i number of ios per file sent before switching 14 # to the next file, default 8 15 # -O Use O_DIRECT (not available in 2.4 kernels), 16 # -S Use O_SYNC for writes 17 # -o add an operation to the list: write=0, read=1, 18 # random write=2, random read=3. 19 # repeat -o to specify multiple ops: -o 0 -o 1 etc. 20 # -m shm use ipc shared memory for io buffers instead of malloc 21 # -m shmfs mmap a file in /dev/shm for io buffers 22 # -n no fsyncs between write stage and read stage 23 # -l print io_submit latencies after each stage 24 # -t number of threads to run 25 # -v verification of bytes written 26 # -x turn off thread stonewalling 27 # -h this message 28 # 29 ADS2001 aio-stress -I500 -o2 -S -r32 -t2 $TMPDIR/junkfile $TMPDIR/file2 30 ADS2002 aio-stress -I500 -o3 -S -r8 -t2 $TMPDIR/junkfile $TMPDIR/file2 31 ADS2003 aio-stress -I500 -o3 -S -r16 -t2 $TMPDIR/junkfile $TMPDIR/file2 32 ADS2004 aio-stress -I500 -o3 -S -r32 -t4 $TMPDIR/junkfile $TMPDIR/file2 $TMPDIR/file3 $TMPDIR/file4 33 ADS2005 aio-stress -I500 -o3 -S -r64 -t4 $TMPDIR/junkfile $TMPDIR/file2 $TMPDIR/file3 $TMPDIR/file4 34 ADS2006 aio-stress -I500 -o2 -O -r32 -t2 $TMPDIR/junkfile $TMPDIR/file2 35 ADS2007 aio-stress -I500 -o3 -O -r8 -t2 $TMPDIR/junkfile $TMPDIR/file2 36 ADS2008 aio-stress -I500 -o3 -O -r16 -t2 $TMPDIR/junkfile $TMPDIR/file2 37 ADS2009 aio-stress -I500 -o3 -O -r32 -t4 $TMPDIR/junkfile $TMPDIR/file2 $TMPDIR/file3 $TMPDIR/file4 38 ADS2010 aio-stress -I500 -o3 -O -r64 -t4 $TMPDIR/junkfile $TMPDIR/file2 $TMPDIR/file3 $TMPDIR/file4 39
