+/* Checks that recent_cpu is calculated properly for the case of
+ a single ready process.
+
+ The expected output is this (some margin of error is allowed):
+
+ After 2 seconds, recent_cpu is 6.40, load_avg is 0.03.
+ After 4 seconds, recent_cpu is 12.60, load_avg is 0.07.
+ After 6 seconds, recent_cpu is 18.61, load_avg is 0.10.
+ After 8 seconds, recent_cpu is 24.44, load_avg is 0.13.
+ After 10 seconds, recent_cpu is 30.08, load_avg is 0.15.
+ After 12 seconds, recent_cpu is 35.54, load_avg is 0.18.
+ After 14 seconds, recent_cpu is 40.83, load_avg is 0.21.
+ After 16 seconds, recent_cpu is 45.96, load_avg is 0.24.
+ After 18 seconds, recent_cpu is 50.92, load_avg is 0.26.
+ After 20 seconds, recent_cpu is 55.73, load_avg is 0.29.
+ After 22 seconds, recent_cpu is 60.39, load_avg is 0.31.
+ After 24 seconds, recent_cpu is 64.90, load_avg is 0.33.
+ After 26 seconds, recent_cpu is 69.27, load_avg is 0.35.
+ After 28 seconds, recent_cpu is 73.50, load_avg is 0.38.
+ After 30 seconds, recent_cpu is 77.60, load_avg is 0.40.
+ After 32 seconds, recent_cpu is 81.56, load_avg is 0.42.
+ After 34 seconds, recent_cpu is 85.40, load_avg is 0.44.
+ After 36 seconds, recent_cpu is 89.12, load_avg is 0.45.
+ After 38 seconds, recent_cpu is 92.72, load_avg is 0.47.
+ After 40 seconds, recent_cpu is 96.20, load_avg is 0.49.
+ After 42 seconds, recent_cpu is 99.57, load_avg is 0.51.
+ After 44 seconds, recent_cpu is 102.84, load_avg is 0.52.
+ After 46 seconds, recent_cpu is 106.00, load_avg is 0.54.
+ After 48 seconds, recent_cpu is 109.06, load_avg is 0.55.
+ After 50 seconds, recent_cpu is 112.02, load_avg is 0.57.
+ After 52 seconds, recent_cpu is 114.89, load_avg is 0.58.
+ After 54 seconds, recent_cpu is 117.66, load_avg is 0.60.
+ After 56 seconds, recent_cpu is 120.34, load_avg is 0.61.
+ After 58 seconds, recent_cpu is 122.94, load_avg is 0.62.
+ After 60 seconds, recent_cpu is 125.46, load_avg is 0.64.
+ After 62 seconds, recent_cpu is 127.89, load_avg is 0.65.
+ After 64 seconds, recent_cpu is 130.25, load_avg is 0.66.
+ After 66 seconds, recent_cpu is 132.53, load_avg is 0.67.
+ After 68 seconds, recent_cpu is 134.73, load_avg is 0.68.
+ After 70 seconds, recent_cpu is 136.86, load_avg is 0.69.
+ After 72 seconds, recent_cpu is 138.93, load_avg is 0.70.
+ After 74 seconds, recent_cpu is 140.93, load_avg is 0.71.
+ After 76 seconds, recent_cpu is 142.86, load_avg is 0.72.
+ After 78 seconds, recent_cpu is 144.73, load_avg is 0.73.
+ After 80 seconds, recent_cpu is 146.54, load_avg is 0.74.
+ After 82 seconds, recent_cpu is 148.29, load_avg is 0.75.
+ After 84 seconds, recent_cpu is 149.99, load_avg is 0.76.
+ After 86 seconds, recent_cpu is 151.63, load_avg is 0.76.
+ After 88 seconds, recent_cpu is 153.21, load_avg is 0.77.
+ After 90 seconds, recent_cpu is 154.75, load_avg is 0.78.
+ After 92 seconds, recent_cpu is 156.23, load_avg is 0.79.
+ After 94 seconds, recent_cpu is 157.67, load_avg is 0.79.
+ After 96 seconds, recent_cpu is 159.06, load_avg is 0.80.
+ After 98 seconds, recent_cpu is 160.40, load_avg is 0.81.
+ After 100 seconds, recent_cpu is 161.70, load_avg is 0.81.
+ After 102 seconds, recent_cpu is 162.96, load_avg is 0.82.
+ After 104 seconds, recent_cpu is 164.18, load_avg is 0.83.
+ After 106 seconds, recent_cpu is 165.35, load_avg is 0.83.
+ After 108 seconds, recent_cpu is 166.49, load_avg is 0.84.
+ After 110 seconds, recent_cpu is 167.59, load_avg is 0.84.
+ After 112 seconds, recent_cpu is 168.66, load_avg is 0.85.
+ After 114 seconds, recent_cpu is 169.69, load_avg is 0.85.
+ After 116 seconds, recent_cpu is 170.69, load_avg is 0.86.
+ After 118 seconds, recent_cpu is 171.65, load_avg is 0.86.
+ After 120 seconds, recent_cpu is 172.58, load_avg is 0.87.
+ After 122 seconds, recent_cpu is 173.49, load_avg is 0.87.
+ After 124 seconds, recent_cpu is 174.36, load_avg is 0.88.
+ After 126 seconds, recent_cpu is 175.20, load_avg is 0.88.
+ After 128 seconds, recent_cpu is 176.02, load_avg is 0.88.
+ After 130 seconds, recent_cpu is 176.81, load_avg is 0.89.
+ After 132 seconds, recent_cpu is 177.57, load_avg is 0.89.
+ After 134 seconds, recent_cpu is 178.31, load_avg is 0.89.
+ After 136 seconds, recent_cpu is 179.02, load_avg is 0.90.
+ After 138 seconds, recent_cpu is 179.72, load_avg is 0.90.
+ After 140 seconds, recent_cpu is 180.38, load_avg is 0.90.
+ After 142 seconds, recent_cpu is 181.03, load_avg is 0.91.
+ After 144 seconds, recent_cpu is 181.65, load_avg is 0.91.
+ After 146 seconds, recent_cpu is 182.26, load_avg is 0.91.
+ After 148 seconds, recent_cpu is 182.84, load_avg is 0.92.
+ After 150 seconds, recent_cpu is 183.41, load_avg is 0.92.
+ After 152 seconds, recent_cpu is 183.96, load_avg is 0.92.
+ After 154 seconds, recent_cpu is 184.49, load_avg is 0.92.
+ After 156 seconds, recent_cpu is 185.00, load_avg is 0.93.
+ After 158 seconds, recent_cpu is 185.49, load_avg is 0.93.
+ After 160 seconds, recent_cpu is 185.97, load_avg is 0.93.
+ After 162 seconds, recent_cpu is 186.43, load_avg is 0.93.
+ After 164 seconds, recent_cpu is 186.88, load_avg is 0.94.
+ After 166 seconds, recent_cpu is 187.31, load_avg is 0.94.
+ After 168 seconds, recent_cpu is 187.73, load_avg is 0.94.
+ After 170 seconds, recent_cpu is 188.14, load_avg is 0.94.
+ After 172 seconds, recent_cpu is 188.53, load_avg is 0.94.
+ After 174 seconds, recent_cpu is 188.91, load_avg is 0.95.
+ After 176 seconds, recent_cpu is 189.27, load_avg is 0.95.
+ After 178 seconds, recent_cpu is 189.63, load_avg is 0.95.
+ After 180 seconds, recent_cpu is 189.97, load_avg is 0.95.
+*/
+
#include <stdio.h>
#include "tests/threads/tests.h"
#include "threads/init.h"
#include "devices/timer.h"
/* Sensitive to assumption that recent_cpu updates happen exactly
- when timer_ticks()%TIMER_FREQ == 0. */
+ when timer_ticks() % TIMER_FREQ == 0. */
void
test_mlfqs_recent_1 (void)
int64_t start_time;
int last_elapsed = 0;
- ASSERT (enable_mlfqs);
+ ASSERT (thread_mlfqs);
- msg ("Sleeping 10 seconds to allow recent_cpu to decay, please wait...");
- start_time = timer_ticks ();
- timer_sleep (DIV_ROUND_UP (start_time, TIMER_FREQ) - start_time
- + 10 * TIMER_FREQ);
+ do
+ {
+ msg ("Sleeping 10 seconds to allow recent_cpu to decay, please wait...");
+ start_time = timer_ticks ();
+ timer_sleep (DIV_ROUND_UP (start_time, TIMER_FREQ) - start_time
+ + 10 * TIMER_FREQ);
+ }
+ while (thread_get_recent_cpu () > 700);
start_time = timer_ticks ();
for (;;)
projects / pintos-anon / blobdiff