vmstat: Provides option to omit first report
The first report from vmstat provides statistics since system boot. This is often thrown out. Thus, this provides a command line option to omit it. The program still provides <count> reports. Signed-off-by: Sanskriti Sharma <sansharm@redhat.com>
This commit is contained in:
Sanskriti Sharma
Craig Small
parent
7a6437ce42
commit
528158ed77
158
vmstat.c
158
vmstat.c
@ -80,6 +80,9 @@ static int a_option;
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/* "-w" means "wide output" */
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static int w_option;
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/* "-y" means "skip first output" */
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static int y_option;
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/* "-t" means "show timestamp" */
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static int t_option;
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@ -232,6 +235,7 @@ static void __attribute__ ((__noreturn__))
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fputs(_(" -S, --unit <char> define display unit\n"), out);
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fputs(_(" -w, --wide wide output\n"), out);
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fputs(_(" -t, --timestamp show timestamp\n"), out);
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fputs(_(" -y, --no-first skips first line of output\n"), out);
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fputs(USAGE_SEPARATOR, out);
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fputs(USAGE_HELP, out);
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fputs(USAGE_VERSION, out);
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@ -315,11 +319,11 @@ static void new_header(void)
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if (t_option) {
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(void) time( &the_time );
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tm_ptr = localtime( &the_time );
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if (tm_ptr && strftime(timebuf, sizeof(timebuf), "%Z", tm_ptr)) {
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const size_t len = strlen(timestamp_header);
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if (len >= 1 && len - 1 < sizeof(timebuf)) {
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timebuf[len - 1] = '\0';
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}
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if (tm_ptr && strftime(timebuf, sizeof(timebuf), "%Z", tm_ptr)) {
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const size_t len = strlen(timestamp_header);
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if (len >= 1 && len - 1 < sizeof(timebuf)) {
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timebuf[len - 1] = '\0';
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}
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} else {
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timebuf[0] = '\0';
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}
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@ -378,25 +382,6 @@ static void new_format(void)
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if (procps_meminfo_new(&mem_info) < 0)
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xerrx(EXIT_FAILURE, _("Unable to create meminfo structure"));
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if (t_option) {
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(void) time( &the_time );
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tm_ptr = localtime( &the_time );
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if (tm_ptr && strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S", tm_ptr)) {
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;
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} else {
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timebuf[0] = '\0';
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}
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}
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/* Do the initial fill */
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if (!(stat_stack = procps_stat_select(stat_info, First_stat_items, MAX_stat)))
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xerrx(EXIT_FAILURE, _("Unable to select stat information"));
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cpu_use = TICv(stat_USR) + TICv(stat_NIC);
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cpu_sys = TICv(stat_SYS) + TICv(stat_IRQ) + TICv(stat_SRQ);
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cpu_idl = TICv(stat_IDL);
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cpu_iow = TICv(stat_IOW);
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cpu_sto = TICv(stat_STO);
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cpu_gue = TICv(stat_GST) + TICv(stat_GNI);
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pgpgin[tog] = VMSTAT_GET(vm_info, VMSTAT_PGPGIN, ul_int);
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pgpgout[tog] = VMSTAT_GET(vm_info, VMSTAT_PGPGOUT, ul_int);
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pswpin[tog] = VMSTAT_GET(vm_info, VMSTAT_PSWPIN, ul_int);
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@ -405,40 +390,62 @@ static void new_format(void)
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if (!(mem_stack = procps_meminfo_select(mem_info, Mem_items, MAX_mem)))
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xerrx(EXIT_FAILURE, _("Unable to select memory information"));
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Div = cpu_use + cpu_sys + cpu_idl + cpu_iow + cpu_sto;
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if (!Div) {
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Div = 1;
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cpu_idl = 1;
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}
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divo2 = Div / 2UL;
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cpu_use = (cpu_use >= cpu_gue)? cpu_use - cpu_gue : 0;
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if (y_option == 0) {
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if (t_option) {
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(void) time( &the_time );
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tm_ptr = localtime( &the_time );
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if (tm_ptr && strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S", tm_ptr)) {
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;
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} else {
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timebuf[0] = '\0';
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}
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}
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/* Do the initial fill */
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if (!(stat_stack = procps_stat_select(stat_info, First_stat_items, MAX_stat)))
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xerrx(EXIT_FAILURE, _("Unable to select stat information"));
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cpu_use = TICv(stat_USR) + TICv(stat_NIC);
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cpu_sys = TICv(stat_SYS) + TICv(stat_IRQ) + TICv(stat_SRQ);
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cpu_idl = TICv(stat_IDL);
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cpu_iow = TICv(stat_IOW);
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cpu_sto = TICv(stat_STO);
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cpu_gue = TICv(stat_GST) + TICv(stat_GNI);
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printf(w_option ? wide_format : format,
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SYSv(stat_PRU),
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SYSv(stat_PBL),
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unitConvert(MEMv(mem_SUS)),
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unitConvert(MEMv(mem_FREE)),
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unitConvert((a_option?MEMv(mem_INA):MEMv(mem_BUF))),
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unitConvert((a_option?MEMv(mem_ACT):MEMv(mem_CAC))),
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(unsigned)( (unitConvert(VMSTAT_GET(vm_info, VMSTAT_PSWPIN, ul_int) * kb_per_page) * hz + divo2) / Div ),
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(unsigned)( (unitConvert(VMSTAT_GET(vm_info, VMSTAT_PSWPOUT, ul_int) * kb_per_page) * hz + divo2) / Div ),
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(unsigned)( (VMSTAT_GET(vm_info, VMSTAT_PGPGIN, ul_int) * hz + divo2) / Div ),
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(unsigned)( (VMSTAT_GET(vm_info, VMSTAT_PGPGOUT, ul_int) * hz + divo2) / Div ),
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(unsigned)( (SYSv(stat_INT) * hz + divo2) / Div ),
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(unsigned)( (SYSv(stat_CTX) * hz + divo2) / Div ),
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(unsigned)( (100*cpu_use + divo2) / Div ),
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(unsigned)( (100*cpu_sys + divo2) / Div ),
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(unsigned)( (100*cpu_idl + divo2) / Div ),
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(unsigned)( (100*cpu_iow + divo2) / Div ),
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(unsigned)( (100*cpu_sto + divo2) / Div ),
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(unsigned)( (100*cpu_gue + divo2) / Div )
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);
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Div = cpu_use + cpu_sys + cpu_idl + cpu_iow + cpu_sto;
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if (!Div) {
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Div = 1;
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cpu_idl = 1;
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}
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divo2 = Div / 2UL;
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cpu_use = (cpu_use >= cpu_gue)? cpu_use - cpu_gue : 0;
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if (t_option) {
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printf(" %s", timebuf);
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}
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printf(w_option ? wide_format : format,
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SYSv(stat_PRU),
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SYSv(stat_PBL),
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unitConvert(MEMv(mem_SUS)),
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unitConvert(MEMv(mem_FREE)),
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unitConvert((a_option?MEMv(mem_INA):MEMv(mem_BUF))),
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unitConvert((a_option?MEMv(mem_ACT):MEMv(mem_CAC))),
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(unsigned)( (unitConvert(VMSTAT_GET(vm_info, VMSTAT_PSWPIN, ul_int) * kb_per_page) * hz + divo2) / Div ),
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(unsigned)( (unitConvert(VMSTAT_GET(vm_info, VMSTAT_PSWPOUT, ul_int) * kb_per_page) * hz + divo2) / Div ),
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(unsigned)( (VMSTAT_GET(vm_info, VMSTAT_PGPGIN, ul_int) * hz + divo2) / Div ),
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(unsigned)( (VMSTAT_GET(vm_info, VMSTAT_PGPGOUT, ul_int) * hz + divo2) / Div ),
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(unsigned)( (SYSv(stat_INT) * hz + divo2) / Div ),
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(unsigned)( (SYSv(stat_CTX) * hz + divo2) / Div ),
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(unsigned)( (100*cpu_use + divo2) / Div ),
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(unsigned)( (100*cpu_sys + divo2) / Div ),
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(unsigned)( (100*cpu_idl + divo2) / Div ),
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(unsigned)( (100*cpu_iow + divo2) / Div ),
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(unsigned)( (100*cpu_sto + divo2) / Div ),
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(unsigned)( (100*cpu_gue + divo2) / Div )
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);
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printf("\n");
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if (t_option) {
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printf(" %s", timebuf);
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}
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printf("\n");
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} else
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num_updates++;
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/* main loop */
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for (i = 1; infinite_updates || i < num_updates; i++) {
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@ -464,11 +471,11 @@ static void new_format(void)
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if (t_option) {
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(void) time( &the_time );
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tm_ptr = localtime( &the_time );
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if (tm_ptr && strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S", tm_ptr)) {
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;
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} else {
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timebuf[0] = '\0';
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}
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if (tm_ptr && strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S", tm_ptr)) {
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;
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} else {
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timebuf[0] = '\0';
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}
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}
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/* idle can run backwards for a moment -- kernel "feature" */
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@ -522,7 +529,7 @@ static void new_format(void)
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(unsigned)( (100*cpu_iow+divo2)/Div ),
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/* st */
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(unsigned)( (100*cpu_sto+divo2)/Div ),
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/* gu */
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/* gu */
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(unsigned)( (100*cpu_gue+divo2)/Div )
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);
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@ -567,7 +574,7 @@ static void diskpartition_format(const char *partition_name)
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struct diskstats_info *disk_stat = NULL;
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struct diskstats_stack *stack;
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struct diskstats_result *got;
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const char format[] = "%21lu %16lu %10lu %16lu\n";
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const char format[] = "%21lu %16lu %10lu %16lu\n";
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int i;
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if (procps_diskstats_new(&disk_stat) < 0)
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@ -647,11 +654,11 @@ static void diskheader(void)
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if (t_option) {
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(void) time( &the_time );
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tm_ptr = localtime( &the_time );
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if (tm_ptr && strftime(timebuf, sizeof(timebuf), "%Z", tm_ptr)) {
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const size_t len = strlen(timestamp_header);
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if (len >= 1 && len - 1 < sizeof(timebuf)) {
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timebuf[len - 1] = '\0';
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}
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if (tm_ptr && strftime(timebuf, sizeof(timebuf), "%Z", tm_ptr)) {
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const size_t len = strlen(timestamp_header);
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if (len >= 1 && len - 1 < sizeof(timebuf)) {
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timebuf[len - 1] = '\0';
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}
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} else {
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timebuf[0] = '\0';
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}
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@ -685,11 +692,11 @@ static void diskformat(void)
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if (t_option) {
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(void) time( &the_time );
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tm_ptr = localtime( &the_time );
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if (tm_ptr && strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S", tm_ptr)) {
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;
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} else {
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timebuf[0] = '\0';
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}
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if (tm_ptr && strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S", tm_ptr)) {
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;
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} else {
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timebuf[0] = '\0';
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}
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}
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for (j = 0; j < reap->total; j++) {
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if (diskVAL(disk_TYPE, s_int) != DISKSTATS_TYPE_DISK)
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@ -944,6 +951,7 @@ int main(int argc, char *argv[])
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{"timestamp", no_argument, NULL, 't'},
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{"help", no_argument, NULL, 'h'},
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{"version", no_argument, NULL, 'V'},
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{"no-first", no_argument, NULL, 'y'},
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{NULL, 0, NULL, 0}
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};
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@ -956,7 +964,7 @@ int main(int argc, char *argv[])
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atexit(close_stdout);
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while ((c =
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getopt_long(argc, argv, "afmnsdDp:S:wthV", longopts, NULL)) != -1)
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getopt_long(argc, argv, "afmnsdDp:S:wthVy", longopts, NULL)) != -1)
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switch (c) {
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case 'V':
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printf(PROCPS_NG_VERSION);
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@ -1023,6 +1031,10 @@ int main(int argc, char *argv[])
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case 't':
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t_option = 1;
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break;
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case 'y':
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/* Don't display stats since system restart */
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y_option = 1;
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break;
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default:
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/* no other aguments defined yet. */
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usage(stderr);
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