what is a resolution of jiffie in Linux Kernel

If you take a look at the man page man 7 time

The value of HZ varies across kernel versions and hardware platforms. On i386 the situation is as follows: on kernels up to and including 2.4.x, HZ was 100, giving a jiffy value of 0.01 seconds; starting with 2.6.0, HZ was raised to 1000, giving a jiffy of 0.001 seconds. Since kernel 2.6.13, the HZ value is a kernel configuration parameter and can be 100, 250 (the default) or 1000, yielding a jiffies value of, respectively, 0.01, 0.004, or 0.001 seconds. Since kernel 2.6.20, a further frequency is available: 300, a number that divides evenly for the common video frame rates (PAL, 25 HZ; NTSC, 30 HZ).

The times(2) system call is a special case. It reports times with a granularity defined by the kernel con‐ stant USER_HZ. User-space applications can determine the value of this constant
using sysconf(_SC_CLK_TCK).

You can inquire the CLK_TCK constant:

$ getconf CLK_TCK
100

This tells you the value of HZ, i.e. 100. This value is the number of jiffies in a second.

References

• How does USER_HZ solve the jiffy scaling issue?
• time.h - time types