Add buffer_compress_percentage
The option is pending testing, so not documented yet.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/io_u.c b/io_u.c
index 161c2cb..2deb5c7 100644
--- a/io_u.c
+++ b/io_u.c
@@ -1227,9 +1227,10 @@
if (io_u->ddir == DDIR_WRITE) {
if (td->o.verify != VERIFY_NONE)
populate_verify_io_u(td, io_u);
- else if (td->o.refill_buffers)
- io_u_fill_buffer(td, io_u, io_u->xfer_buflen);
- else if (td->o.scramble_buffers)
+ else if (td->o.refill_buffers) {
+ io_u_fill_buffer(td, io_u,
+ io_u->xfer_buflen, io_u->xfer_buflen);
+ } else if (td->o.scramble_buffers)
do_scramble = 1;
} else if (io_u->ddir == DDIR_READ) {
/*
@@ -1532,12 +1533,18 @@
* "randomly" fill the buffer contents
*/
void io_u_fill_buffer(struct thread_data *td, struct io_u *io_u,
- unsigned int max_bs)
+ unsigned int min_write, unsigned int max_bs)
{
io_u->buf_filled_len = 0;
- if (!td->o.zero_buffers)
- fill_random_buf(&td->buf_state, io_u->buf, max_bs);
- else
+ if (!td->o.zero_buffers) {
+ unsigned int perc = td->o.compress_percentage;
+
+ if (perc) {
+ fill_random_buf_percentage(&td->buf_state, io_u->buf,
+ perc, min_write, max_bs);
+ } else
+ fill_random_buf(&td->buf_state, io_u->buf, max_bs);
+ } else
memset(io_u->buf, 0, max_bs);
}