diff options
Diffstat (limited to 'src/analyze/systemd-analyze.c')
| -rw-r--r-- | src/analyze/systemd-analyze.c | 351 |
1 files changed, 349 insertions, 2 deletions
diff --git a/src/analyze/systemd-analyze.c b/src/analyze/systemd-analyze.c index e648a4449f..14c07e409e 100644 --- a/src/analyze/systemd-analyze.c +++ b/src/analyze/systemd-analyze.c @@ -35,6 +35,9 @@ #include "strxcpyx.h" #include "fileio.h" #include "strv.h" +#include "unit-name.h" +#include "special.h" +#include "hashmap.h" #define SCALE_X (0.1 / 1000.0) /* pixels per us */ #define SCALE_Y 20.0 @@ -65,6 +68,8 @@ static enum dot { static char** arg_dot_from_patterns = NULL; static char** arg_dot_to_patterns = NULL; +usec_t arg_fuzz = 0; + struct boot_times { usec_t firmware_time; usec_t loader_time; @@ -548,6 +553,331 @@ static int analyze_plot(DBusConnection *bus) { return 0; } + +static int list_dependencies_print(const char *name, unsigned int level, unsigned int branches, + bool last, struct unit_times *times, struct boot_times *boot) { + unsigned int i; + char ts[FORMAT_TIMESPAN_MAX], ts2[FORMAT_TIMESPAN_MAX]; + + for (i = level; i != 0; i--) + printf("%s", draw_special_char(branches & (1 << (i-1)) ? DRAW_TREE_VERT : DRAW_TREE_SPACE)); + + printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_TREE_BRANCH)); + + if (times) { + if (times->time) + printf("%s%s @%s +%s%s", ANSI_HIGHLIGHT_RED_ON, name, + format_timespan(ts, sizeof(ts), times->ixt - boot->userspace_time, USEC_PER_MSEC), + format_timespan(ts2, sizeof(ts2), times->time, USEC_PER_MSEC), ANSI_HIGHLIGHT_OFF); + else if (times->aet > boot->userspace_time) + printf("%s @%s", name, format_timespan(ts, sizeof(ts), times->aet - boot->userspace_time, USEC_PER_MSEC)); + else + printf("%s", name); + } else printf("%s", name); + printf("\n"); + + return 0; +} + +static int list_dependencies_get_dependencies(DBusConnection *bus, const char *name, char ***deps) { + static const char dependencies[] = + "After\0"; + + _cleanup_free_ char *path; + const char *interface = "org.freedesktop.systemd1.Unit"; + + _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; + DBusMessageIter iter, sub, sub2, sub3; + + int r = 0; + char **ret = NULL; + + assert(bus); + assert(name); + assert(deps); + + path = unit_dbus_path_from_name(name); + if (path == NULL) { + r = -EINVAL; + goto finish; + } + + r = bus_method_call_with_reply( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.DBus.Properties", + "GetAll", + &reply, + NULL, + DBUS_TYPE_STRING, &interface, + DBUS_TYPE_INVALID); + if (r < 0) + goto finish; + + if (!dbus_message_iter_init(reply, &iter) || + dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || + dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) { + log_error("Failed to parse reply."); + r = -EIO; + goto finish; + } + + dbus_message_iter_recurse(&iter, &sub); + + while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) { + const char *prop; + + assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_DICT_ENTRY); + dbus_message_iter_recurse(&sub, &sub2); + + if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) { + log_error("Failed to parse reply."); + r = -EIO; + goto finish; + } + + if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) { + log_error("Failed to parse reply."); + r = -EIO; + goto finish; + } + + dbus_message_iter_recurse(&sub2, &sub3); + dbus_message_iter_next(&sub); + + if (!nulstr_contains(dependencies, prop)) + continue; + + if (dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_ARRAY) { + if (dbus_message_iter_get_element_type(&sub3) == DBUS_TYPE_STRING) { + DBusMessageIter sub4; + dbus_message_iter_recurse(&sub3, &sub4); + + while (dbus_message_iter_get_arg_type(&sub4) != DBUS_TYPE_INVALID) { + const char *s; + + assert(dbus_message_iter_get_arg_type(&sub4) == DBUS_TYPE_STRING); + dbus_message_iter_get_basic(&sub4, &s); + + r = strv_extend(&ret, s); + if (r < 0) { + log_oom(); + goto finish; + } + + dbus_message_iter_next(&sub4); + } + } + } + } +finish: + if (r < 0) + strv_free(ret); + else + *deps = ret; + return r; +} + +static Hashmap *unit_times_hashmap; + +static int list_dependencies_compare(const void *_a, const void *_b) { + const char **a = (const char**) _a, **b = (const char**) _b; + usec_t usa = 0, usb = 0; + struct unit_times *times; + + times = hashmap_get(unit_times_hashmap, *a); + if (times) + usa = times->aet; + times = hashmap_get(unit_times_hashmap, *b); + if (times) + usb = times->aet; + + return usb - usa; +} + +static int list_dependencies_one(DBusConnection *bus, const char *name, unsigned int level, char ***units, + unsigned int branches) { + _cleanup_strv_free_ char **deps = NULL; + char **c; + int r = 0; + usec_t service_longest = 0; + int to_print = 0; + struct unit_times *times; + struct boot_times *boot; + + if(strv_extend(units, name)) + return log_oom(); + + r = list_dependencies_get_dependencies(bus, name, &deps); + if (r < 0) + return r; + + qsort(deps, strv_length(deps), sizeof (char*), list_dependencies_compare); + + r = acquire_boot_times(bus, &boot); + if (r < 0) + return r; + + STRV_FOREACH(c, deps) { + times = hashmap_get(unit_times_hashmap, *c); + if (times + && times->aet + && times->aet <= boot->finish_time + && (times->aet >= service_longest + || service_longest == 0)) { + service_longest = times->aet; + break; + } + } + + if (service_longest == 0 ) + return r; + + STRV_FOREACH(c, deps) { + times = hashmap_get(unit_times_hashmap, *c); + if (times && times->aet + && times->aet <= boot->finish_time + && (service_longest - times->aet) <= arg_fuzz) { + to_print++; + } + } + + if(!to_print) + return r; + + STRV_FOREACH(c, deps) { + times = hashmap_get(unit_times_hashmap, *c); + if (!times + || !times->aet + || times->aet > boot->finish_time + || service_longest - times->aet > arg_fuzz) + continue; + + to_print--; + + r = list_dependencies_print(*c, level, branches, to_print == 0, times, boot); + if (r < 0) + return r; + + if (strv_contains(*units, *c)) { + r = list_dependencies_print("...", level + 1, (branches << 1) | (to_print ? 1 : 0), + true, NULL, boot); + continue; + } + + r = list_dependencies_one(bus, *c, level + 1, units, + (branches << 1) | (to_print ? 1 : 0)); + if(r < 0) + return r; + + + if(!to_print) + break; + + } + return 0; +} + +static int list_dependencies(DBusConnection *bus) { + _cleanup_free_ char *unit = NULL; + _cleanup_strv_free_ char **units = NULL; + char ts[FORMAT_TIMESPAN_MAX]; + struct unit_times *times; + int r; + const char + *path, *id, + *interface = "org.freedesktop.systemd1.Unit", + *property = "Id"; + DBusMessageIter iter, sub; + _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; + struct boot_times *boot; + + assert(bus); + + path = unit_dbus_path_from_name(SPECIAL_DEFAULT_TARGET); + if (path == NULL) + return -EINVAL; + + r = bus_method_call_with_reply ( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.DBus.Properties", + "Get", + &reply, + NULL, + DBUS_TYPE_STRING, &interface, + DBUS_TYPE_STRING, &property, + DBUS_TYPE_INVALID); + if (r < 0) + return r; + + if (!dbus_message_iter_init(reply, &iter) || + dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) { + log_error("Failed to parse reply."); + return -EIO; + } + + dbus_message_iter_recurse(&iter, &sub); + + if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) { + log_error("Failed to parse reply."); + return -EIO; + } + + dbus_message_iter_get_basic(&sub, &id); + + times = hashmap_get(unit_times_hashmap, id); + + r = acquire_boot_times(bus, &boot); + if (r < 0) + return r; + + if (times) { + if (times->time) + printf("%s%s +%s%s\n", ANSI_HIGHLIGHT_RED_ON, id, + format_timespan(ts, sizeof(ts), times->time, USEC_PER_MSEC), ANSI_HIGHLIGHT_OFF); + else if (times->aet > boot->userspace_time) + printf("%s @%s\n", id, format_timespan(ts, sizeof(ts), times->aet - boot->userspace_time, USEC_PER_MSEC)); + else + printf("%s\n", id); + } + + return list_dependencies_one(bus, SPECIAL_DEFAULT_TARGET, 0, &units, 0); +} + +static int analyze_critical_chain(DBusConnection *bus) { + struct unit_times *times; + int n, r; + unsigned int i; + Hashmap *h; + + n = acquire_time_data(bus, ×); + if (n <= 0) + return n; + + h = hashmap_new(string_hash_func, string_compare_func); + if (!h) + return -ENOMEM; + + for (i = 0; i < (unsigned)n; i++) { + r = hashmap_put(h, times[i].name, ×[i]); + if (r < 0) + return r; + } + unit_times_hashmap = h; + + puts("The time after the unit is active or started is printed after the \"@\" character.\n" + "The time the unit takes to start is printed after the \"+\" character.\n"); + + list_dependencies(bus); + + hashmap_free(h); + free_unit_times(times, (unsigned) n); + return 0; +} + static int analyze_blame(DBusConnection *bus) { struct unit_times *times; unsigned i; @@ -795,10 +1125,15 @@ static void analyze_help(void) " --require When generating a dependency graph, show only requirement\n" " --from-pattern=GLOB, --to-pattern=GLOB\n" " When generating a dependency graph, filter only origins\n" - " or destinations, respectively\n\n" + " or destinations, respectively\n" + " --fuzz=TIMESPAN When printing the tree of the critical chain, print also\n" + " services, which finished TIMESPAN earlier, than the\n" + " latest in the branch. The unit of TIMESPAN is seconds\n" + " unless specified with a different unit, i.e. 50ms\n\n" "Commands:\n" " time Print time spent in the kernel before reaching userspace\n" " blame Print list of running units ordered by time to init\n" + " critical-chain Print a tree of the time critical chain of units\n" " plot Output SVG graphic showing service initialization\n" " dot Dump dependency graph (in dot(1) format)\n\n", program_invocation_short_name); @@ -806,6 +1141,8 @@ static void analyze_help(void) static int parse_argv(int argc, char *argv[]) { + int r; + enum { ARG_VERSION = 0x100, ARG_ORDER, @@ -813,7 +1150,8 @@ static int parse_argv(int argc, char *argv[]) ARG_USER, ARG_SYSTEM, ARG_DOT_FROM_PATTERN, - ARG_DOT_TO_PATTERN + ARG_DOT_TO_PATTERN, + ARG_FUZZ }; static const struct option options[] = { @@ -825,6 +1163,7 @@ static int parse_argv(int argc, char *argv[]) { "system", no_argument, NULL, ARG_SYSTEM }, { "from-pattern", required_argument, NULL, ARG_DOT_FROM_PATTERN}, { "to-pattern", required_argument, NULL, ARG_DOT_TO_PATTERN }, + { "fuzz", required_argument, NULL, ARG_FUZZ }, { NULL, 0, NULL, 0 } }; @@ -870,6 +1209,12 @@ static int parse_argv(int argc, char *argv[]) break; + case ARG_FUZZ: + r = parse_sec(optarg, &arg_fuzz); + if (r < 0) + return r; + break; + case -1: return 1; @@ -905,6 +1250,8 @@ int main(int argc, char *argv[]) { r = analyze_time(bus); else if (streq(argv[optind], "blame")) r = analyze_blame(bus); + else if (streq(argv[optind], "critical-chain")) + r = analyze_critical_chain(bus); else if (streq(argv[optind], "plot")) r = analyze_plot(bus); else if (streq(argv[optind], "dot")) |