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perf daemon: Add up time for daemon/session list 

Display up time for both daemon and sessions.

Example:

  # cat ~/.perfconfig
  [daemon]
  base=/opt/perfdata

  [session-cycles]
  run = -m 10M -e cycles --overwrite --switch-output -a

  [session-sched]
  run = -m 20M -e sched:* --overwrite --switch-output -a

Starting the daemon:

  # perf daemon start

Get the details with up time:

  # perf daemon -v
  [778315:daemon] base: /opt/perfdata
    output:  /opt/perfdata/output
    lock:    /opt/perfdata/lock
    up:      15 minutes
  [778316:cycles] perf record -m 20M -e cycles --overwrite --switch-output -a
    base:    /opt/perfdata/session-cycles
    output:  /opt/perfdata/session-cycles/output
    control: /opt/perfdata/session-cycles/control
    ack:     /opt/perfdata/session-cycles/ack
    up:      10 minutes
  [778317:sched] perf record -m 20M -e sched:* --overwrite --switch-output -a
    base:    /opt/perfdata/session-sched
    output:  /opt/perfdata/session-sched/output
    control: /opt/perfdata/session-sched/control
    ack:     /opt/perfdata/session-sched/ack
    up:      2 minutes

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: https://lore.kernel.org/r/20210208200908.1019149-18-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2021-02-08 21:09:01 +01:00 committed by Arnaldo Carvalho de Melo
parent 6d6162d51c
commit 5bdee4f051
1 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
tools/perf/builtin-daemon.c
View File

@ -25,6 +25,7 @@
#include <sys/wait.h>
#include <poll.h>
#include <sys/stat.h>
#include <time.h>
#include "builtin.h"
#include "perf.h"
#include "debug.h"
@ -80,6 +81,7 @@ struct daemon_session {
int pid;
struct list_head list;
enum daemon_session_state state;
time_t start;
};
struct daemon {
@ -93,6 +95,7 @@ struct daemon {
FILE *out;
char perf[PATH_MAX];
int signal_fd;
time_t start;
};
static struct daemon __daemon = {
@ -335,6 +338,8 @@ static int daemon_session__run(struct daemon_session *session,
return -1;
}
session->start = time(NULL);
session->pid = fork();
if (session->pid < 0)
return -1;
@ -665,6 +670,7 @@ static int cmd_session_list(struct daemon *daemon, union cmd *cmd, FILE *out)
{
char csv_sep = cmd->list.csv_sep;
struct daemon_session *session;
time_t curr = time(NULL);
if (csv_sep) {
fprintf(out, "%d%c%s%c%s%c%s/%s",
@ -679,6 +685,10 @@ static int cmd_session_list(struct daemon *daemon, union cmd *cmd, FILE *out)
/* lock */
csv_sep, daemon->base, "lock");
fprintf(out, "%c%lu",
/* session up time */
csv_sep, (curr - daemon->start) / 60);
fprintf(out, "\n");
} else {
fprintf(out, "[%d:daemon] base: %s\n", getpid(), daemon->base);
@ -687,6 +697,8 @@ static int cmd_session_list(struct daemon *daemon, union cmd *cmd, FILE *out)
daemon->base, SESSION_OUTPUT);
fprintf(out, " lock: %s/lock\n",
daemon->base);
fprintf(out, " up: %lu minutes\n",
(curr - daemon->start) / 60);
}
}
@ -712,6 +724,10 @@ static int cmd_session_list(struct daemon *daemon, union cmd *cmd, FILE *out)
/* session ack */
csv_sep, session->base, SESSION_ACK);
fprintf(out, "%c%lu",
/* session up time */
csv_sep, (curr - session->start) / 60);
fprintf(out, "\n");
} else {
fprintf(out, "[%d:%s] perf record %s\n",
@ -726,6 +742,8 @@ static int cmd_session_list(struct daemon *daemon, union cmd *cmd, FILE *out)
session->base, SESSION_CONTROL);
fprintf(out, " ack: %s/%s\n",
session->base, SESSION_ACK);
fprintf(out, " up: %lu minutes\n",
(curr - session->start) / 60);
}
}
@ -1239,6 +1257,8 @@ static int __cmd_start(struct daemon *daemon, struct option parent_options[],
if (argc)
usage_with_options(daemon_usage, start_options);
daemon->start = time(NULL);
if (setup_config(daemon)) {
pr_err("failed: config not found\n");
return -1;