sync2
Schedule file system updates
Usage
#include <unistd.h>
void
sync(void);
Library
Standard C Library (libc, -lc)
Overview
The sync() system call forces a write of dirty (modified) buffers in the block buffer cache out to disk. The kernel keeps this information in core to reduce the number of disk I/O transfers required by the system. As information in the cache is lost after a system crash, a sync() system call is issued frequently by the kernel process syncer(4) (about every 30 seconds).
The fsync(2) system call may be used to synchronize individual file descriptor attributes.
Releases
87 releases since FreeBSD 2.0.5-RELEASE; the text changed 42 times.