8.184 TODDRAG (Display or set TOD c
lock drag factor)

8.184.1 Function

The TODDRAG command displays the current setting of the TOD clock drag factor or sets a new value.
This parameter can be used to slow down or speed up the TOD clock by a factor of nn. A significant slow-
down can improve the performance of some operating systems which consume large amounts of CPU
time processing timer interrupts. A drag factor of 2.0 slows down the clock by 50%, a drag factor of 0.5
doubles the speed of the clock, a drag factor of 1.01 slows down the clock by 1% and 0.99 speeds up the
clock by 1%.

8.184.2 Syntax

Descriptive

Diagram

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8.184.3 Parameter

factor

The factor to which the TOD clock has to be slowed down or sped up.

8.184.4 Examples

Example 1:

Display current TOD clock drag factor.

HHC00013I Herc command: 'toddrag'

HHC02203I toddrag : 1.000000

Figure 326: TODDRAG command (display TOD clock factor)

Example 2:

Speed up the clock by 10%.

HHC00013I Herc command: 'toddrag 0.9'

HHC02204I toddrag set to 0.9

Figure 327: TODDRAG command (set TOD clock factor)

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