diff options
Diffstat (limited to 'procps')
| -rw-r--r-- | procps/Config.in | 11 | ||||
| -rw-r--r-- | procps/top.c | 58 |
2 files changed, 51 insertions, 18 deletions
diff --git a/procps/Config.in b/procps/Config.in index e58b89f..cd46a34 100644 --- a/procps/Config.in +++ b/procps/Config.in @@ -102,11 +102,18 @@ config TOP system. config FEATURE_TOP_CPU_USAGE_PERCENTAGE - bool "Support showing CPU usage percentage (add 2k bytes)" + bool "Show CPU per-process usage percentage (adds 2k bytes)" default y depends on TOP help - Make top display CPU usage. + Make top display CPU usage for each process. + +config FEATURE_TOP_CPU_GLOBAL_PERCENTS + bool "Show CPU global usage percentage (adds 1k byte)" + default y + depends on FEATURE_TOP_CPU_USAGE_PERCENTAGE + help + Makes top display "CPU: n.n% us n.n% sy n.n% ni..." line. config UPTIME bool "uptime" diff --git a/procps/top.c b/procps/top.c index 948ab03..6d8dfd8 100644 --- a/procps/top.c +++ b/procps/top.c @@ -221,7 +221,6 @@ static unsigned long display_generic(int scr_width) char scrbuf[80]; char *end; unsigned long total, used, mfree, shared, buffers, cached; - unsigned int needs_conversion = 1; /* read memory info */ fp = xfopen("meminfo", "r"); @@ -240,14 +239,20 @@ static unsigned long display_generic(int scr_width) fgets(buf, sizeof(buf), fp); /* skip first line */ fscanf(fp, "Mem: %lu %lu %lu %lu %lu %lu", - &total, &used, &mfree, &shared, &buffers, &cached); + &total, &used, &mfree, &shared, &buffers, &cached); + /* convert to kilobytes */ + used /= 1024; + mfree /= 1024; + shared /= 1024; + buffers /= 1024; + cached /= 1024; + total /= 1024; } else { /* * Revert to manual parsing, which incidentally already has the * sizes in kilobytes. This should be safe for both 2.4 and * 2.6. */ - needs_conversion = 0; fscanf(fp, "MemFree: %lu %s\n", &mfree, buf); @@ -273,16 +278,6 @@ static unsigned long display_generic(int scr_width) if (end) end = strchr(end+1, ' '); if (end) *end = '\0'; - if (needs_conversion) { - /* convert to kilobytes */ - used /= 1024; - mfree /= 1024; - shared /= 1024; - buffers /= 1024; - cached /= 1024; - total /= 1024; - } - /* output memory info and load average */ /* clear screen & go to top */ if (scr_width > sizeof(scrbuf)) @@ -293,8 +288,39 @@ static unsigned long display_generic(int scr_width) printf(OPT_BATCH_MODE ? "%s\n" : "\e[H\e[J%s\n", scrbuf); + if (ENABLE_FEATURE_TOP_CPU_GLOBAL_PERCENTS) { + /* + * xxx% = (jif.xxx - prev_jif.xxx) / (jif.total - prev_jif.total) * 100% + */ +#define CALC_STAT(xxx) div_t xxx = div(1000 * (jif.xxx - prev_jif.xxx) / total_diff, 10) +#define SHOW_STAT(xxx) xxx.quot, '0'+xxx.rem + unsigned total_diff = (jif.total - prev_jif.total ? : 1); + CALC_STAT(usr); + CALC_STAT(sys); + CALC_STAT(nic); + CALC_STAT(idle); + CALC_STAT(iowait); + CALC_STAT(irq); + CALC_STAT(softirq); + //CALC_STAT(steal); + + snprintf(scrbuf, scr_width, + /* %3u.%c in practice almost never displays "100.0" + * and thus has implicit leading space: " 99.6" */ + "CPU:%3u.%c%% us%3u.%c%% sy%3u.%c%% ni%3u.%c%% id%3u.%c%% wa%3u.%c%% hi%3u.%c%% si", + // %3u.%c%%st", - what is this 'steal' thing? + // I doubt anyone needs to know it + SHOW_STAT(usr), SHOW_STAT(sys), SHOW_STAT(nic), SHOW_STAT(idle), + SHOW_STAT(iowait), SHOW_STAT(irq), SHOW_STAT(softirq) + //, SHOW_STAT(steal) + ); + puts(scrbuf); +#undef SHOW_STAT +#undef CALC_STAT + } + snprintf(scrbuf, scr_width, "Load average: %s", buf); - printf("%s\n", scrbuf); + puts(scrbuf); return total; } @@ -479,7 +505,7 @@ int top_main(int argc, char **argv) procps_status_t *p = NULL; /* Default to 25 lines - 5 lines for status */ - lines = 24 - 3; + lines = 24 - 3 USE_FEATURE_TOP_CPU_GLOBAL_PERCENTS( - 1); col = 79; #if ENABLE_FEATURE_USE_TERMIOS get_terminal_width_height(0, &col, &lines); @@ -487,7 +513,7 @@ int top_main(int argc, char **argv) sleep(interval); continue; } - lines -= 3; + lines -= 3 USE_FEATURE_TOP_CPU_GLOBAL_PERCENTS( + 1); #endif /* FEATURE_USE_TERMIOS */ /* read process IDs & status for all the processes */ |