* commit '3a6a953ccc09cf70f11000e98d8639fcf934cbc0': dumpstate: modify logcat timeout to compensate for storage speed
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commit
2efacef121
@ -18,6 +18,7 @@
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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@ -109,6 +110,7 @@ static bool skip_not_stat(const char *path) {
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}
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static const char mmcblk0[] = "/sys/block/mmcblk0/";
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unsigned long worst_write_perf = 20000; /* in KB/s */
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static int dump_stat_from_fd(const char *title __unused, const char *path, int fd) {
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unsigned long fields[11], read_perf, write_perf;
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@ -157,11 +159,111 @@ static int dump_stat_from_fd(const char *title __unused, const char *path, int f
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write_perf = 512 * fields[6] / fields[7];
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}
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printf("%s: read: %luKB/s write: %luKB/s\n", path, read_perf, write_perf);
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if ((write_perf > 1) && (write_perf < worst_write_perf)) {
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worst_write_perf = write_perf;
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}
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return 0;
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}
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/* Copied policy from system/core/logd/LogBuffer.cpp */
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#define LOG_BUFFER_SIZE (256 * 1024)
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#define LOG_BUFFER_MIN_SIZE (64 * 1024UL)
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#define LOG_BUFFER_MAX_SIZE (256 * 1024 * 1024UL)
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static bool valid_size(unsigned long value) {
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if ((value < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < value)) {
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return false;
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}
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long pages = sysconf(_SC_PHYS_PAGES);
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if (pages < 1) {
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return true;
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}
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long pagesize = sysconf(_SC_PAGESIZE);
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if (pagesize <= 1) {
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pagesize = PAGE_SIZE;
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}
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// maximum memory impact a somewhat arbitrary ~3%
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pages = (pages + 31) / 32;
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unsigned long maximum = pages * pagesize;
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if ((maximum < LOG_BUFFER_MIN_SIZE) || (LOG_BUFFER_MAX_SIZE < maximum)) {
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return true;
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}
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return value <= maximum;
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}
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static unsigned long property_get_size(const char *key) {
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unsigned long value;
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char *cp, property[PROPERTY_VALUE_MAX];
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property_get(key, property, "");
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value = strtoul(property, &cp, 10);
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switch(*cp) {
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case 'm':
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case 'M':
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value *= 1024;
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/* FALLTHRU */
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case 'k':
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case 'K':
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value *= 1024;
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/* FALLTHRU */
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case '\0':
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break;
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default:
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value = 0;
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}
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if (!valid_size(value)) {
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value = 0;
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}
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return value;
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}
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/* timeout in ms */
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static unsigned long logcat_timeout(char *name) {
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static const char global_tuneable[] = "persist.logd.size"; // Settings App
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static const char global_default[] = "ro.logd.size"; // BoardConfig.mk
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char key[PROP_NAME_MAX];
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unsigned long property_size, default_size;
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default_size = property_get_size(global_tuneable);
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if (!default_size) {
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default_size = property_get_size(global_default);
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}
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snprintf(key, sizeof(key), "%s.%s", global_tuneable, name);
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property_size = property_get_size(key);
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if (!property_size) {
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snprintf(key, sizeof(key), "%s.%s", global_default, name);
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property_size = property_get_size(key);
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}
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if (!property_size) {
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property_size = default_size;
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}
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if (!property_size) {
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property_size = LOG_BUFFER_SIZE;
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}
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/* Engineering margin is ten-fold our guess */
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return 10 * (property_size + worst_write_perf) / worst_write_perf;
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}
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/* End copy from system/core/logd/LogBuffer.cpp */
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/* dumps the current system state to stdout */
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static void dumpstate() {
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unsigned long timeout;
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time_t now = time(NULL);
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char build[PROPERTY_VALUE_MAX], fingerprint[PROPERTY_VALUE_MAX];
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char radio[PROPERTY_VALUE_MAX], bootloader[PROPERTY_VALUE_MAX];
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@ -229,9 +331,22 @@ static void dumpstate() {
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}
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// dump_file("EVENT LOG TAGS", "/etc/event-log-tags");
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run_command("SYSTEM LOG", 20, "logcat", "-v", "threadtime", "-d", "*:v", NULL);
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run_command("EVENT LOG", 20, "logcat", "-b", "events", "-v", "threadtime", "-d", "*:v", NULL);
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run_command("RADIO LOG", 20, "logcat", "-b", "radio", "-v", "threadtime", "-d", "*:v", NULL);
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// calculate timeout
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timeout = logcat_timeout("main") + logcat_timeout("system") + logcat_timeout("crash");
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if (timeout < 20000) {
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timeout = 20000;
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}
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run_command("SYSTEM LOG", timeout / 1000, "logcat", "-v", "threadtime", "-d", "*:v", NULL);
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timeout = logcat_timeout("events");
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if (timeout < 20000) {
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timeout = 20000;
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}
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run_command("EVENT LOG", timeout / 1000, "logcat", "-b", "events", "-v", "threadtime", "-d", "*:v", NULL);
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timeout = logcat_timeout("radio");
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if (timeout < 20000) {
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timeout = 20000;
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}
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run_command("RADIO LOG", timeout / 1000, "logcat", "-b", "radio", "-v", "threadtime", "-d", "*:v", NULL);
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/* show the traces we collected in main(), if that was done */
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if (dump_traces_path != NULL) {
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