[PATCH] Time and seek optimizations

[fio.git] / time.c

diff --git a/time.c b/time.c
index 52462633a5fccc3791105aef65f64e708001c7f7..cb44c209ec984a1d74ecc0b48054f999c0eed007 100644 (file)
--- a/time.c
+++ b/time.c
@@ -3,6 +3,8 @@
 
 #include "fio.h"
 
+static struct timeval genesis;
+
 unsigned long utime_since(struct timeval *s, struct timeval *e)
 {
        double sec, usec;
@@ -23,7 +25,7 @@ static unsigned long utime_since_now(struct timeval *s)
 {
        struct timeval t;
 
-       gettimeofday(&t, NULL);
+       fio_gettime(&t, NULL);
        return utime_since(s, &t);
 }
 
@@ -47,8 +49,9 @@ unsigned long mtime_since(struct timeval *s, struct timeval *e)
 unsigned long mtime_since_now(struct timeval *s)
 {
        struct timeval t;
+       void *p = __builtin_return_address(0);
 
-       gettimeofday(&t, NULL);
+       fio_gettime(&t, p);
        return mtime_since(s, &t);
 }
 
@@ -60,11 +63,11 @@ unsigned long time_since_now(struct timeval *s)
 /*
  * busy looping version for the last few usec
  */
-static void __usec_sleep(unsigned int usec)
+void __usec_sleep(unsigned int usec)
 {
        struct timeval start;
 
-       gettimeofday(&start, NULL);
+       fio_gettime(&start, NULL);
        while (utime_since_now(&start) < usec)
                nop;
 }
@@ -97,14 +100,14 @@ void usec_sleep(struct thread_data *td, unsigned long usec)
 }
 
 void rate_throttle(struct thread_data *td, unsigned long time_spent,
-                  unsigned int bytes)
+                  unsigned int bytes, int ddir)
 {
        unsigned long usec_cycle;
 
        if (!td->rate)
                return;
 
-       usec_cycle = td->rate_usec_cycle * (bytes / td->min_bs);
+       usec_cycle = td->rate_usec_cycle * (bytes / td->min_bs[ddir]);
 
        if (time_spent < usec_cycle) {
                unsigned long s = usec_cycle - time_spent;
@@ -120,3 +123,18 @@ void rate_throttle(struct thread_data *td, unsigned long time_spent,
                td->rate_pending_usleep -= overtime;
        }
 }
+
+unsigned long mtime_since_genesis(void)
+{
+       return mtime_since_now(&genesis);
+}
+
+static void fio_init time_init(void)
+{
+       fio_gettime(&genesis, NULL);
+}
+
+void fill_start_time(struct timeval *t)
+{
+       memcpy(t, &genesis, sizeof(genesis));
+}