diff options
Diffstat (limited to 'man7/time.7')
| -rw-r--r-- | man7/time.7 | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/man7/time.7 b/man7/time.7 index 18a31393c2..e210c8d5e3 100644 --- a/man7/time.7 +++ b/man7/time.7 @@ -27,7 +27,7 @@ .SH NAME time \- overview of time and timers .SH DESCRIPTION -.SS "Real time and process time" +.SS Real time and process time .I "Real time" is defined as time measured from some fixed point, either from a standard point in the past @@ -54,14 +54,14 @@ A program can determine the amount of CPU time it has consumed using .BR getrusage (2), or .BR clock (3). -.SS "The hardware clock" +.SS The hardware clock Most computers have a (battery-powered) hardware clock which the kernel reads at boot time in order to initialize the software clock. For further details, see .BR rtc (4) and .BR hwclock (8). -.SS "The software clock, HZ, and jiffies" +.SS The software clock, HZ, and jiffies The accuracy of various system calls that set timeouts, (e.g., .BR select (2), @@ -102,7 +102,7 @@ User-space applications can determine the value of this constant using .\" glibc gets this info with a little help from the ELF loader; .\" see glibc elf/dl-support.c and kernel fs/binfmt_elf.c. .\" -.SS "High-resolution timers" +.SS High-resolution timers Before Linux 2.6.21, the accuracy of timer and sleep system calls (see below) was also limited by the size of the jiffy. @@ -121,7 +121,7 @@ or looking at the "resolution" entries in HRTs are not supported on all hardware architectures. (Support is provided on x86, arm, and powerpc, among others.) -.SS "The Epoch" +.SS The Epoch UNIX systems represent time in seconds since the .IR Epoch , 1970-01-01 00:00:00 +0000 (UTC). @@ -137,7 +137,7 @@ provides similar information, but only with accuracy to the nearest second. The system time can be changed using .BR settimeofday (2). -.SS "Broken-down time" +.SS Broken-down time Certain library functions use a structure of type .I tm @@ -155,7 +155,7 @@ string representations of the time are described in .BR strftime (3), and .BR strptime (3). -.SS "Sleeping and setting timers" +.SS Sleeping and setting timers Various system calls and functions allow a program to sleep (suspend execution) for a specified period of time; see .BR nanosleep (2), |
