MINOR: stats: report the boot time in "show info"
Just like we have the uptime in "show info", let's add the boot time.
It's trivial to collect as it's just the difference between the ready
date and the start date, and will allow users to monitor this element
in order to take action before it starts becoming problematic. Here
the boot time is reported in milliseconds, so this allows to even
observe sub-second anomalies in startup delays.
diff --git a/include/haproxy/stats-t.h b/include/haproxy/stats-t.h
index 6636416..07eaf6d 100644
--- a/include/haproxy/stats-t.h
+++ b/include/haproxy/stats-t.h
@@ -345,6 +345,7 @@
INF_TAINTED,
INF_WARNINGS,
INF_MAXCONN_REACHED,
+ INF_BOOTTIME_MS,
/* must always be the last one */
INF_TOTAL_FIELDS
diff --git a/src/stats.c b/src/stats.c
index 48eb532..68adde6 100644
--- a/src/stats.c
+++ b/src/stats.c
@@ -158,6 +158,7 @@
[INF_TAINTED] = { .name = "Tainted", .desc = "Experimental features used" },
[INF_WARNINGS] = { .name = "TotalWarnings", .desc = "Total warnings issued" },
[INF_MAXCONN_REACHED] = { .name = "MaxconnReached", .desc = "Number of times an accepted connection resulted in Maxconn being reached" },
+ [INF_BOOTTIME_MS] = { .name = "BootTime_ms", .desc = "How long ago it took to parse and process the config before being ready (milliseconds)" },
};
const struct name_desc stat_fields[ST_F_TOTAL_FIELDS] = {
@@ -4630,6 +4631,7 @@
uint64_t glob_out_bytes, glob_spl_bytes, glob_out_b32;
uint up_sec, up_usec;
ullong up;
+ ulong boot;
int thr;
#ifdef USE_OPENSSL
@@ -4654,6 +4656,8 @@
up_sec = ns_to_sec(up);
up_usec = (up / 1000U) % 1000000U;
+ boot = tv_ms_remain(&start_date, &ready_date);
+
if (len < INF_TOTAL_FIELDS)
return 0;
@@ -4748,6 +4752,7 @@
chunk_appendf(out, "%#x", get_tainted());
info[INF_WARNINGS] = mkf_u32(FN_COUNTER, HA_ATOMIC_LOAD(&tot_warnings));
info[INF_MAXCONN_REACHED] = mkf_u32(FN_COUNTER, HA_ATOMIC_LOAD(&maxconn_reached));
+ info[INF_BOOTTIME_MS] = mkf_u32(FN_DURATION, boot);
return 1;
}