shithub: bench9

Download patch

ref: 02f047daee598f22e641365d01934973b14f89f3
parent: c2c6b68ac66d44ec8e38e205d2f1cb66a458e359
author: Sigrid Solveig Haflínudóttir <ftrvxmtrx@gmail.com>
date: Wed Oct 28 08:49:43 EDT 2020

wire to cpu 0, remove memmove benchmarks

--- a/main.c
+++ b/main.c
@@ -12,15 +12,25 @@
 void
 threadmain(int argc, char **argv)
 {
-	B group[10], *b;
+	B *group, *b;
 	uchar d[1];
+	char t[64];
 	int f;
 
 	ARGBEGIN{
 	}ARGEND
 
-	b = &group[0];
+	snprint(t, sizeof(t), "/proc/%d/ctl", getpid());
+	if((f = open(t, OWRITE)) < 0)
+		fprint(2, "%r\n");
+	else{
+		if(write(f, "wired 0\n", 8) != 8)
+			fprint(2, "failed to wire\n");
+		close(f);
+	}
 
+	b = group = malloc(32 * sizeof(*b));
+
 	f = open("/dev/null", OREAD);
 	benchinit(b, "read/1");
 	while(b->n > 0){
@@ -79,45 +89,8 @@
 	}
 
 	b++;
-	benchinit(b, "memmove(4k)");
-	while(b->n > 0){
-		char *x, *y;
-		x = malloc(4096);
-		y = malloc(4096);
-		benchin(b);
-		memmove(x, y, 4096);
-		benchout(b);
-		free(x);
-		free(y);
-	}
 
-	b++;
-	benchinit(b, "memmove(64k)");
-	while(b->n > 0){
-		char *x, *y;
-		x = malloc(65536);
-		y = malloc(65536);
-		benchin(b);
-		memmove(x, y, 65536);
-		benchout(b);
-		free(x);
-		free(y);
-	}
-
-	b++;
-	benchinit(b, "memmove(256k)");
-	while(b->n > 0){
-		char *x, *y;
-		x = malloc(256*1024);
-		y = malloc(256*1024);
-		benchin(b);
-		memmove(x, y, 256*1024);
-		benchout(b);
-		free(x);
-		free(y);
-	}
-
-	benchprint(group, nelem(group), 1);
+	benchprint(group, b-group, 1);
 
 	threadexitsall(nil);
 }