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Add test for ratio of increase in delay to stddev

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Require that the ratio of the increase in delay from the minimum one in
the stats data register to the standard deviation of the offsets in the
register is less than maxdelaydevratio or the difference between
measured offset and predicted offset is larger than the increase in
delay. In the allowed delay increase is included also skew and maximum
clock frequency error.

maxdelaydevratio is 10.0 by default.
This commit is contained in:
Miroslav Lichvar
2010-12-03 18:35:33 +01:00
parent feb8811f37
commit b977c95be4
12 changed files with 112 additions and 9 deletions
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5
sourcestats.h
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@@ -137,6 +137,11 @@ extern double SST_PredictOffset(SST_Stats inst, struct timeval *when);
/* Find the minimum round trip delay in the register */
extern double SST_MinRoundTripDelay(SST_Stats inst);
/* This routine determines if a new sample is good enough that it should be
accumulated */
extern int SST_IsGoodSample(SST_Stats inst, double offset, double delay,
double max_delay_dev_ratio, double clock_error, struct timeval *when);
extern void SST_SaveToFile(SST_Stats inst, FILE *out);
extern int SST_LoadFromFile(SST_Stats inst, FILE *in);