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-rw-r--r--src/analyze/analyze.c64
1 files changed, 56 insertions, 8 deletions
diff --git a/src/analyze/analyze.c b/src/analyze/analyze.c
index 14ca28d443..db1e7f3f37 100644
--- a/src/analyze/analyze.c
+++ b/src/analyze/analyze.c
@@ -88,6 +88,18 @@ struct boot_times {
usec_t generators_finish_time;
usec_t unitsload_start_time;
usec_t unitsload_finish_time;
+
+ /*
+ * If we're analyzing the user instance, all timestamps will be offset
+ * by its own start-up timestamp, which may be arbitrarily big.
+ * With "plot", this causes arbitrarily wide output SVG files which almost
+ * completely consist of empty space. Thus we cancel out this offset.
+ *
+ * This offset is subtracted from times above by acquire_boot_times(),
+ * but it still needs to be subtracted from unit-specific timestamps
+ * (so it is stored here for reference).
+ */
+ usec_t reverse_offset;
};
struct unit_times {
@@ -188,6 +200,15 @@ static void free_unit_times(struct unit_times *t, unsigned n) {
free(t);
}
+static void subtract_timestamp(usec_t *a, usec_t b) {
+ assert(a);
+
+ if (*a > 0) {
+ assert(*a >= b);
+ *a -= b;
+ }
+}
+
static int acquire_boot_times(sd_bus *bus, struct boot_times **bt) {
static struct boot_times times;
static bool cached = false;
@@ -264,10 +285,30 @@ static int acquire_boot_times(sd_bus *bus, struct boot_times **bt) {
return -EINPROGRESS;
}
- if (times.initrd_time)
- times.kernel_done_time = times.initrd_time;
- else
- times.kernel_done_time = times.userspace_time;
+ if (arg_user) {
+ /*
+ * User-instance-specific timestamps processing
+ * (see comment to reverse_offset in struct boot_times).
+ */
+ times.reverse_offset = times.userspace_time;
+
+ times.firmware_time = times.loader_time = times.kernel_time = times.initrd_time = times.userspace_time = 0;
+ subtract_timestamp(&times.finish_time, times.reverse_offset);
+
+ subtract_timestamp(&times.security_start_time, times.reverse_offset);
+ subtract_timestamp(&times.security_finish_time, times.reverse_offset);
+
+ subtract_timestamp(&times.generators_start_time, times.reverse_offset);
+ subtract_timestamp(&times.generators_finish_time, times.reverse_offset);
+
+ subtract_timestamp(&times.unitsload_start_time, times.reverse_offset);
+ subtract_timestamp(&times.unitsload_finish_time, times.reverse_offset);
+ } else {
+ if (times.initrd_time)
+ times.kernel_done_time = times.initrd_time;
+ else
+ times.kernel_done_time = times.userspace_time;
+ }
cached = true;
@@ -291,10 +332,15 @@ static int acquire_time_data(sd_bus *bus, struct unit_times **out) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
int r, c = 0;
+ struct boot_times *boot_times = NULL;
struct unit_times *unit_times = NULL;
size_t size = 0;
UnitInfo u;
+ r = acquire_boot_times(bus, &boot_times);
+ if (r < 0)
+ goto fail;
+
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
@@ -347,6 +393,11 @@ static int acquire_time_data(sd_bus *bus, struct unit_times **out) {
goto fail;
}
+ subtract_timestamp(&t->activating, boot_times->reverse_offset);
+ subtract_timestamp(&t->activated, boot_times->reverse_offset);
+ subtract_timestamp(&t->deactivating, boot_times->reverse_offset);
+ subtract_timestamp(&t->deactivated, boot_times->reverse_offset);
+
if (t->activated >= t->activating)
t->time = t->activated - t->activating;
else if (t->deactivated >= t->activating)
@@ -450,10 +501,7 @@ static int pretty_boot_time(sd_bus *bus, char **_buf) {
size = strpcpyf(&ptr, size, "%s (initrd) + ", format_timespan(ts, sizeof(ts), t->userspace_time - t->initrd_time, USEC_PER_MSEC));
size = strpcpyf(&ptr, size, "%s (userspace) ", format_timespan(ts, sizeof(ts), t->finish_time - t->userspace_time, USEC_PER_MSEC));
- if (t->kernel_time > 0)
- strpcpyf(&ptr, size, "= %s", format_timespan(ts, sizeof(ts), t->firmware_time + t->finish_time, USEC_PER_MSEC));
- else
- strpcpyf(&ptr, size, "= %s", format_timespan(ts, sizeof(ts), t->finish_time - t->userspace_time, USEC_PER_MSEC));
+ strpcpyf(&ptr, size, "= %s", format_timespan(ts, sizeof(ts), t->firmware_time + t->finish_time, USEC_PER_MSEC));
ptr = strdup(buf);
if (!ptr)