From 00766fbf8f1014b44a9d79c525bc6376538825b7 Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom.smeding@gmail.com>
Date: Tue, 8 Oct 2019 16:47:02 +0200
Subject: Sane indentation
---
disk_perf.c | 94 ++++++++++++++++++++++++++++++-------------------------------
1 file changed, 47 insertions(+), 47 deletions(-)
diff --git a/disk_perf.c b/disk_perf.c
index 81c4095..9efd97a 100644
--- a/disk_perf.c
+++ b/disk_perf.c
@@ -8,61 +8,61 @@
#include <sys/time.h>
static uint64_t gettimestamp() {
- struct timeval tv;
- gettimeofday(&tv, NULL);
- return tv.tv_sec * 1000000ULL + tv.tv_usec;
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ return tv.tv_sec * 1000000ULL + tv.tv_usec;
}
static void writeall(int fd, const void *buf, size_t count) {
- size_t cursor = 0;
- while (cursor < count) {
- ssize_t written = write(fd, buf + cursor, count - cursor);
- if (written < 0) {
- perror("write");
- exit(1);
- }
- assert(written > 0);
- cursor += written;
- }
+ size_t cursor = 0;
+ while (cursor < count) {
+ ssize_t written = write(fd, buf + cursor, count - cursor);
+ if (written < 0) {
+ perror("write");
+ exit(1);
+ }
+ assert(written > 0);
+ cursor += written;
+ }
}
int main(int argc, char **argv) {
- if (argc != 2) {
- fprintf(stderr, "Usage: %s <temp file to use>\n", argv[0]);
- fprintf(stderr,
- "This will write some data to a file as many times per second as\n"
- "possible, calling fsync() after each write to make sure it is\n"
- "persisted. This gives an upper bound on the number of ACID transactions\n"
- "a single-threaded database can achieve on a disk.\n"
- "The amount of data in one write is currently 18 bytes.\n"
- );
- return 1;
- }
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s <temp file to use>\n", argv[0]);
+ fprintf(stderr,
+ "This will write some data to a file as many times per second as\n"
+ "possible, calling fsync() after each write to make sure it is\n"
+ "persisted. This gives an upper bound on the number of ACID transactions\n"
+ "a single-threaded database can achieve on a disk.\n"
+ "The amount of data in one write is currently 18 bytes.\n"
+ );
+ return 1;
+ }
- int fd = open(argv[1], O_WRONLY | O_CREAT, 0644);
- if (fd < 0) {
- perror("open");
- return 1;
- }
+ int fd = open(argv[1], O_WRONLY | O_CREAT, 0644);
+ if (fd < 0) {
+ perror("open");
+ return 1;
+ }
- uint64_t start_stamp = gettimestamp();
- size_t num_writes = 0;
- for (size_t i = 0; ; i++) {
- const char *str = "abcdefgh=01234567\n";
- writeall(fd, str, strlen(str));
- fsync(fd);
- num_writes++;
+ uint64_t start_stamp = gettimestamp();
+ size_t num_writes = 0;
+ for (size_t i = 0; ; i++) {
+ const char *str = "abcdefgh=01234567\n";
+ writeall(fd, str, strlen(str));
+ fsync(fd);
+ num_writes++;
- if (i % 100 == 0) {
- uint64_t now = gettimestamp();
- double secs = (double)(now - start_stamp) / 1000000;
- if (secs >= 4.0) {
- printf("Speed: %zu writes in %lf seconds = %lf w/s\n",
- num_writes, secs, num_writes / secs);
+ if (i % 100 == 0) {
+ uint64_t now = gettimestamp();
+ double secs = (double)(now - start_stamp) / 1000000;
+ if (secs >= 4.0) {
+ printf("Speed: %zu writes in %lf seconds = %lf w/s\n",
+ num_writes, secs, num_writes / secs);
- start_stamp = now;
- num_writes = 0;
- }
- }
- }
+ start_stamp = now;
+ num_writes = 0;
+ }
+ }
+ }
}
--
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