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