From 0f8807884e316f60e7828c53a43ee6bd18f7348b Mon Sep 17 00:00:00 2001 From: Vito Caputo <vcaputo@pengaru.com> Date: Tue, 21 Sep 2021 02:37:00 -0700 Subject: =?UTF-8?q?charts:=20Wall=3D=3F=3Fs=20if=20proc=5Fstat->start=20is?= =?UTF-8?q?=20>=20boottime?= Since libvmon samples the sys_wants before proc_wants, it's entirely possible the proc_stat->start will be later than sys_stat->boottime by the time a given process gets sampled. Simply treat this analogous to being unable to sample the start, either of which will only leave the Wall as ??s in the highly ephemeral short-lived process scenario. In the > boottime case, the next sample for the same process would have start <= boottime --- src/charts.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/charts.c b/src/charts.c index 6566f0a..fc33612 100644 --- a/src/charts.c +++ b/src/charts.c @@ -795,7 +795,7 @@ static void draw_columns(vwm_charts_t *charts, vwm_chart_t *chart, vwm_column_t case VWM_COLUMN_PROC_WALL: /* User Sys Wall times */ if (!row) str_len = snpf(str, sizeof(str), "Wall"); - else if (!proc_stat->start) + else if (!proc_stat->start || proc_stat->start > sys_stat->boottime) str_len = snpf(str, sizeof(str), "??s"); else str_len = snpf(str, sizeof(str), "%.2fs", -- cgit v1.2.3