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Turn hard coded values into parameters. #36

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Turn hard coded values into parameters. #36

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ef4eb0a
Turn hard coden values into parameters.
runema Jul 13, 2017
4d8f730
Fix typos and spelling errors spotted by git user @rwarren .
runema Jul 20, 2017
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2 changes: 1 addition & 1 deletion main_sim_client.c
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Original file line number Diff line number Diff line change
Expand Up @@ -139,7 +139,7 @@ simfile_readline(struct ocx *ocx, struct todolist *tdl, void *priv)
u1 -= sf->t0;
TS_Nanosec(&sf->when, u1, u2);
dt = TS_Diff(&sf->when, &t0);
if (dt >= 1e-3) {
if (dt >= param_sim_min_sched) {
TODO_ScheduleAbs(tdl, simfile_readline, priv,
&sf->when, 0.0, "Readline");
return (TODO_OK);
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3 changes: 1 addition & 2 deletions ntp_filter.c
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Original file line number Diff line number Diff line change
Expand Up @@ -115,8 +115,7 @@ nf_filter(struct ocx *ocx, const struct ntp_peer *np)
}

// This is almost never a good sign.
if (r > 2048) {
/* XXX: 2048 -> param */
if (r > param_ntp_filter_ancient) {
Put(ocx, OCX_TRACE, "NF ancient ref %.3e\n", r);
return;
}
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40 changes: 38 additions & 2 deletions param_tbl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -38,8 +38,10 @@
/* name, min, max, default, docs */

#ifdef PARAM_CLIENT
PARAM_CLIENT(poll_rate, 16.0, 4096.0, 64.0, "")
PARAM_CLIENT(foo, 16.0, 4096.0, 64.0, "")
PARAM_CLIENT(poll_rate, 16.0, 4096.0, 64.0, "Client poll rate")
PARAM_CLIENT(sim_min_sched,
1e-6, 1e-2, 1e-3,
"Minimum delay before simulator scheduling")
#endif

#ifdef PARAM_NTP_FILTER
Expand All @@ -60,6 +62,14 @@ PARAM_NTP_FILTER(ntp_filter_threshold,
" Setting it too low throws away adequate timestamps."
)

PARAM_NTP_FILTER(ntp_filter_ancient,
256, 4096, 2048,
"Packet delays exceeding the average by this amount are too old."
" These events are logged."
" Setting this too high and the clock may become erratic."
" Setting it too low throws away useful timestamps."
)

#endif

/**********************************************************************
Expand Down Expand Up @@ -109,6 +119,32 @@ PARAM_PLL_STD(pll_std_p_limit,
" Increasing this makes the PLL more agile and prone to noise."
)

PARAM_PLL_STD(pll_std_mode1_step,
1e-6, 3e2, 1e-3,
"Treshold for stepping clock at startup.\n\n"
"Reducing this will step the clock at smaller errors."
" Increasing this makes the PLL more tolerant and"
" reduces the chance that the clock is stepped."
)

PARAM_PLL_STD(pll_std_mode1_rt,
1e-3, 1e3, 2,
"Cut off value for internal offset in PLL-mode 1\n\n"
"Increasing this will delay the initial clock step."
)

PARAM_PLL_STD(pll_std_mode1_weight,
1e-3, 1e3, 3,
"Cut off value for weight in PLL-mode 1\n\n"
"Increasing this will delay the initial clock step."
)

PARAM_PLL_STD(pll_std_mode2_rt,
1e-3, 1e3, 6,
"Cut off value for internal offset in PLL-mode 2\n\n"
"Increasing this will delay the transition to mode 3."
)

#endif


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7 changes: 4 additions & 3 deletions pll_std.c
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Expand Up @@ -77,8 +77,9 @@ pll_std(struct ocx *ocx, double offset, double weight)
case 1: /* Wait until we have a good estimate, then step */

rt = TS_Diff(&t0, &pll_t0);
if (rt > 2.0 && weight > 3) { // XXX param
if (fabs(offset) > 1e-3) // XXX param
if (rt > param_pll_std_mode1_rt
&& weight > param_pll_std_mode1_weight) {
if (fabs(offset) > param_pll_std_mode1_step)
TB_Step(ocx, -offset);
pll_mode = 2;
pll_t0 = t0;
Expand All @@ -88,7 +89,7 @@ pll_std(struct ocx *ocx, double offset, double weight)
case 2: /* Wait for another good estimate, then PLL */

rt = TS_Diff(&t0, &pll_t0);
if (rt > 6.0) {
if (rt > param_pll_std_mode2_rt) {
pll_b = pll_a / param_pll_std_i_init;
pll_t0 = t0;
pll_mode = 3;
Expand Down