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xv6-public
提交 91c171fc 创建 作者: Silas Boyd-Wickizer's avatar Silas Boyd-Wickizer
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Dust off dirbench

上级 75de4440
隐藏空白字符变更
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正在显示 包含 26 行增加 和 21 行删除
bin/dirbench.cc
浏览文件 @ 91c171fc
...@@ -5,41 +5,44 @@ ...@@ -5,41 +5,44 @@
#include "amd64.h" #include "amd64.h"
#include "fcntl.h" #include "fcntl.h"
enum { nthread = 2 }; static const bool pinit = true;
enum { nloop = 100 }; enum { nloop = 100 };
enum { nfile = 10 }; enum { nfile = 10 };
enum { nlookup = 100 }; enum { nlookup = 100 };
char dirs[nthread][MAXNAME];
void void
bench(u32 tid) bench(u32 tid)
{ {
char pn[MAXNAME]; char pn[MAXNAME];
if (pinit)
setaffinity(tid);
for (u32 x = 0; x < nloop; x++) { for (u32 x = 0; x < nloop; x++) {
for (u32 i = 0; i < nfile; i++) { for (u32 i = 0; i < nfile; i++) {
snprintf(pn, sizeof(pn), "%s/f:%d:%d", dirs[tid], tid, i); snprintf(pn, sizeof(pn), "/dbx/f:%d:%d", tid, i);
int fd = open(pn, O_CREATE | O_RDWR); int fd = open(pn, O_CREATE | O_RDWR);
if (fd < 0) if (fd < 0)
fprintf(1, "create failed\n"); die("create failed\n");
close(fd); close(fd);
} }
for (u32 i = 0; i < nlookup; i++) { for (u32 i = 0; i < nlookup; i++) {
snprintf(pn, sizeof(pn), "%s/f:%d:%d", dirs[tid], tid, (i % nfile)); snprintf(pn, sizeof(pn), "/dbx/f:%d:%d", tid, (i % nfile));
int fd = open(pn, O_RDWR); int fd = open(pn, O_RDWR);
if (fd < 0) if (fd < 0)
fprintf(1, "open failed\n"); die("open failed\n");
close(fd); close(fd);
} }
for (u32 i = 0; i < nfile; i++) { for (u32 i = 0; i < nfile; i++) {
snprintf(pn, sizeof(pn), "%s/f:%d:%d", dirs[tid], tid, i); snprintf(pn, sizeof(pn), "/dbx/f:%d:%d", tid, i);
if (unlink(pn) < 0) if (unlink(pn) < 0)
fprintf(1, "unlink failed\n"); die("unlink failed\n");
} }
} }
...@@ -47,29 +50,31 @@ bench(u32 tid) ...@@ -47,29 +50,31 @@ bench(u32 tid)
} }
int int
main(void) main(int ac, char** av)
{ {
for (u32 i = 0; i < nthread; i++) { int nthread;
//snprintf(dirs[i], sizeof(dirs[i]), "/db%d", i);
snprintf(dirs[i], sizeof(dirs[i]), "/dbx");
if (mkdir(dirs[i]) < 0)
fprintf(1, "mkdir failed\n");
}
// mtrace_enable_set(1, "xv6-dirbench"); if (ac < 2)
die("usage: %s nthreads", av[0]);
fprintf(1, "dirbench[%d]: start\n", getpid()); nthread = atoi(av[1]);
if (mkdir("/dbx") < 0)
fprintf(1, "mkdir failed\n");
u64 t0 = rdtsc();
for(u32 i = 0; i < nthread; i++) { for(u32 i = 0; i < nthread; i++) {
int pid = fork(0); int pid = fork(0);
if (pid == 0) if (pid == 0)
bench(i); bench(i);
else if (pid < 0)
die("fork");
} }
for (u32 i = 0; i < nthread; i++) for (u32 i = 0; i < nthread; i++)
wait(); wait();
u64 t1 = rdtsc();
// mtrace_enable_set(0, "xv6-dirbench"); printf("dirbench: %lu\n", t1-t0);
fprintf(1, "dirbench[%d]: done\n", getpid()); return 0;
// halt();
exit();
} }
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