Revision 1:48383762a1ff, committed 2015-04-01

Comitter:

mzta

Date:

Wed Apr 01 17:38:22 2015 +0000

Parent:

0:f1015c4245f6

Commit message:

add speed comparison test.

Changed in this revision

diff -r f1015c4245f6 -r 48383762a1ff main.cpp
--- a/main.cpp	Wed Apr 01 16:33:30 2015 +0000
+++ b/main.cpp	Wed Apr 01 17:38:22 2015 +0000
@@ -3,76 +3,108 @@
 #include "SDFileSystem.h"
 
 SDFileSystem sd(P8_5, P8_6, P8_3, P8_4, "sd");
+Timer timer;
 
-namespace {
 const char *mem_file_path = "/ram/out.txt";
-const char *sd_file_path = "/sd/fatdump";
-const int DATA_SIZE = 10 * 1024;
+const char *sd_file_path = "/sd/out.txt";
+const char *dump_path = "/sd/fatdump";
+const int DATA_SIZE = 100 * 1024;
+uint8_t data_written[DATA_SIZE] = { 0 };
+
+void writeFile(const char *path)
+{
+    FILE *f = fopen(path, "w"); 
+    for (int i = 0; i < DATA_SIZE; i++) {
+        data_written[i] = rand() % 0XFF;
+        fprintf(f, "%c", data_written[i]);
+    }
+    fclose(f);    
+}
+
+bool readFile(const char *path)
+{
+    bool result = true;
+
+    FILE *f = fopen(path, "r");
+    for (int i = 0; i < DATA_SIZE; i++) {
+        uint8_t data = fgetc(f);
+        if (data != data_written[i]) {
+            result = false;
+            break;
+        }
+    }
+    fclose(f);
+
+    return result;
 }
 
 int main()
-{
-    uint8_t data_written[DATA_SIZE] = { 0 };
-    bool result = true;
-    
+{    
     MemFileSystem *ramfs1 = new MemFileSystem("ram");
     ramfs1->format();
+
+    /**
+     * MemFileSystem read/write test
+     */
     {
-        FILE *f = fopen(mem_file_path, "w");
- 
         printf("Mem: Writing ... ");
-        for (int i = 0; i < DATA_SIZE; i++) {
-            data_written[i] = rand() % 0XFF;
-            fprintf(f, "%c", data_written[i]);
-        }
+        writeFile(mem_file_path);
         printf("[OK]\r\n");
-        fclose(f);
-    }
  
-    {
-        FILE *f = fopen(mem_file_path, "r");
         printf("Mem: Reading data ... ");
-        for (int i = 0; i < DATA_SIZE; i++) {
-            uint8_t data = fgetc(f);
-            if (data != data_written[i]) {
-                result = false;
-                break;
-            }
-        }
-        printf("[%s]\r\n", result ? "OK" : "FAIL");
-        fclose(f);
+        printf("[%s]\r\n", readFile(mem_file_path) ? "OK" : "FAIL");
     }
 
+    /**
+     * MemFileSystem dump/load test
+     */
     {
-        FILE *f = fopen(sd_file_path, "w");
         printf("Dump from MemFs to SDFs ... ");
+        FILE *f = fopen(dump_path, "w");
         ramfs1->dump(f);
-        printf("[OK]\r\n");
         fclose(f);
+        printf("[OK]\n");
     }
 
     delete ramfs1;
     MemFileSystem *ramfs2 = new MemFileSystem("ram");
 
     {
-        FILE *f = fopen(sd_file_path, "r");
         printf("Load from SDFs to MemFs ... ");
+        FILE *f = fopen(dump_path, "r");
         ramfs2->load(f);
-        printf("[OK]\r\n");
         fclose(f);
+        printf("[OK]\n");
     }
 
+    printf("Mem: Reading data ... ");
+    printf("[%s]\n", readFile(mem_file_path) ? "OK" : "FAIL");
+    
+    /*
+     * FileSytem speed comparison
+     */
     {
-        FILE *f = fopen(mem_file_path, "r");
-        printf("Mem: Reading data ... ");
-        for (int i = 0; i < DATA_SIZE; i++) {
-            uint8_t data = fgetc(f);
-            if (data != data_written[i]) {
-                result = false;
-                break;
-            }
+        int cnt = 10;
+        int s, e;
+
+        timer.start();
+        
+        s = timer.read_us();
+        printf("Mem: Writing 10 times ...");
+        for (int i = 0; i < cnt; i++) {
+            writeFile(mem_file_path);
         }
-        printf("[%s]\r\n", result ? "OK" : "FAIL");
-        fclose(f);
+        e = timer.read_us();
+        printf("[OK] avg = %dusec\n", (e - s) / cnt );
+
+        s = timer.read_us();
+        printf("SD: Writing 10 times ...");
+        for (int i = 0; i < cnt; i++) {
+            writeFile(sd_file_path);
+        }
+        e = timer.read_us();
+        printf("[OK] avg = %dusec\n", (e - s) / cnt );
+        
+        timer.stop();
     }
 }
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