From b2c24f584d163a6e5170f4a025aa1094b468527a Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Fri, 21 Sep 2018 15:31:16 +0200 Subject: [PATCH] package/pkg-generic.mk: increase precision of timestamps Currently, the timestamps that we keep in build-time.log use a second-level precision. However, as we are going to introduce a new type of graph to draw the time line of a build, this precision is going to be insufficient, as a number of steps are so short that they are not even one second long, and generally the rounding to the second gives a not so great looking graph. Therefore, we add to the timestamps the nanoseconds using the %N date specifier. A milli-second precision would have been sufficient, but %N is all what date(1) provides at the sub-second level. Since this is changing the format of the build-time.log file, this commit adjusts the support/scripts/graph-build-time script accordingly, to account for the floating point numbers that we have as timestamps. Signed-off-by: Thomas Petazzoni Acked-by: "Yann E. MORIN" Signed-off-by: Thomas Petazzoni --- package/pkg-generic.mk | 2 +- support/scripts/graph-build-time | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/package/pkg-generic.mk b/package/pkg-generic.mk index 91b61c6de0..daf24594de 100644 --- a/package/pkg-generic.mk +++ b/package/pkg-generic.mk @@ -50,7 +50,7 @@ endef # Time steps define step_time printf "%s:%-5.5s:%-20.20s: %s\n" \ - "$$(date +%s)" "$(1)" "$(2)" "$(3)" \ + "$$(date +%s.%N)" "$(1)" "$(2)" "$(3)" \ >>"$(BUILD_DIR)/build-time.log" endef GLOBAL_INSTRUMENTATION_HOOKS += step_time diff --git a/support/scripts/graph-build-time b/support/scripts/graph-build-time index 415d431f23..892e08bf07 100755 --- a/support/scripts/graph-build-time +++ b/support/scripts/graph-build-time @@ -260,7 +260,7 @@ def read_data(input_file): return None for row in reader: - time = int(row[0].strip()) + time = float(row[0].strip()) state = row[1].strip() step = row[2].strip() pkg = row[3].strip()