Add cache hit stats

[fio.git] / engines / aioring.c

diff --git a/engines/aioring.c b/engines/aioring.c
index 46469dbfeacc28d7e58092269296e7142d1fb751..ce9a2aac6ce2b865b91ad0565453d55a4cca7504 100644 (file)
--- a/engines/aioring.c
+++ b/engines/aioring.c
@@ -63,6 +63,8 @@ typedef uint16_t u16;
 
 #define IORING_SQ_NEED_WAKEUP  (1 << 0)
 
+#define IOEV_RES2_CACHEHIT     (1 << 0)
+
 struct aio_sq_ring {
        union {
                struct {
@@ -103,6 +105,9 @@ struct aioring_data {
 
        int queued;
        int cq_ring_off;
+
+       uint64_t cachehit;
+       uint64_t cachemiss;
 };
 
 struct aioring_options {
@@ -241,6 +246,13 @@ static struct io_u *fio_aioring_event(struct thread_data *td, int event)
        } else
                io_u->error = 0;
 
+       if (io_u->ddir == DDIR_READ) {
+               if (ev->res2 & IOEV_RES2_CACHEHIT)
+                       ld->cachehit++;
+               else
+                       ld->cachemiss++;
+       }
+
        return io_u;
 }
 
@@ -431,6 +443,9 @@ static void fio_aioring_cleanup(struct thread_data *td)
        struct aioring_data *ld = td->io_ops_data;
 
        if (ld) {
+               td->ts.cachehit += ld->cachehit;
+               td->ts.cachemiss += ld->cachemiss;
+
                /* Bump depth to match init depth */
                td->o.iodepth++;