vmstat does IO-wait
This commit is contained in:
albert
parent
2754004de0
commit
80ec87f55a
2
NEWS
2
NEWS
@ -1,9 +1,11 @@
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procps-3.0.5 --> procps-3.0.6
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vmstat displays IO-wait time instead of bogus "w"
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can build w/o shared library (set SHARED=0)
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when IO-wait hidden, count as idle, not as sys
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pmap command added (like Sun has)
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do not crash GNU make 3.79
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top slightly faster
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procps-3.0.4 --> procps-3.0.5
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@ -25,7 +25,7 @@ LIBPROC := proc/lib$(NAME).a
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endif
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# Separate rule for this directory, to use -fpic or -fPIC
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$(LIBOBJ): proc/%.o: proc/%.c
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$(filter-out proc/version.o,$(LIBOBJ)): proc/%.o: proc/%.c
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$(CC) -c $(CFLAGS) $(FPIC) $< -o $@
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LIB_X := COPYING module.mk
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@ -70,8 +70,4 @@ $(lib)/$(SONAME) : proc/$(SONAME)
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proc/version.o: proc/version.c proc/version.h
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ifdef MINORVERSION
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$(strip $(CC) $(CFLAGS) -DVERSION=\"$(VERSION)\" -DSUBVERSION=\"$(SUBVERSION)\" -DMINORVERSION=\"$(MINORVERSION)\" -c -o $@ $<)
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else
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$(strip $(CC) $(CFLAGS) -DVERSION=\"$(VERSION)\" -DSUBVERSION=\"$(SUBVERSION)\" -c -o $@ $<)
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endif
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$(CC) $(CFLAGS) $(FPIC) -DVERSION=\"$(VERSION)\" -DSUBVERSION=\"$(SUBVERSION)\" -DMINORVERSION=\"$(MINORVERSION)\" -c -o $@ $<
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2
top.c
2
top.c
@ -711,7 +711,7 @@ static const char *scale_tics (TICS_t tics, const int width)
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unsigned cc; // centiseconds
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unsigned nn; // multi-purpose whatever
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nt = (tics * 100) / Hertz;
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nt = (tics * 100ull) / Hertz;
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cc = nt % 100; // centiseconds past second
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nt /= 100; // total seconds
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nn = nt % 60; // seconds past the minute
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12
vmstat.8
12
vmstat.8
@ -41,8 +41,6 @@ The \fB-V\fP switch results in displaying version information.
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.nf
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r: The number of processes waiting for run time.
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b: The number of processes in uninterruptable sleep.
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w: The number of processes swapped out but otherwise runnable. This
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field is calculated, but Linux never desperation swaps.
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.fi
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.PP
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.SS
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@ -81,9 +79,10 @@ cs: The number of context switches per second.
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.B "CPU "
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These are percentages of total CPU time.
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.nf
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us: user time
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sy: system time
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id: idle time
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us: Time spent running non-kernel code. (user time, including nice time)
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sy: Time spent running kernel code. (system time)
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id: Time spent idle. Prior to Linux 2.5.41, this includes IO-wait time.
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wa: Time spent waiting for IO. Prior to Linux 2.5.41, shown as zero.
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.nf
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.SH NOTES
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.B "vmstat "
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@ -93,7 +92,8 @@ These reports are intended to help identify system bottlenecks. Linux
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.B "vmstat "
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does not count itself as a running process.
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.PP
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All linux blocks are currently 1k, except for CD-ROM blocks which are 2k.
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All linux blocks are currently 1024 bytes. Old kernels may report
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blocks as 512 bytes, 2048 bytes, or 4096 bytes.
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.PP
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.SH FILES
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.ta
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35
vmstat.c
35
vmstat.c
@ -155,6 +155,8 @@ static void getrunners(unsigned int *running, unsigned int *blocked,
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//////////////////////////////////////////////////////////////////////////////////////
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#if 0
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static void old_header(void){
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printf("%8s%28s%10s%12s%11s%9s\n",
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"procs","memory","swap","io","system","cpu");
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@ -253,10 +255,11 @@ static void old_format(void) {
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);
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}
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}
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#endif
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//////////////////////////////////////////////////////////////////////////////////////
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#if 0
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// produce: " 6 ", "123 ", "123k ", etc.
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static int format_1024(unsigned long long val64, char *dst){
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unsigned oldval;
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@ -321,21 +324,19 @@ static int format_1000(unsigned long long val64, char *dst){
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}
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return sprintf(dst, "%3u%c ", val32, suffix[level]);
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}
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/*
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procs -----------memory---------- --swap- ----io--- ---system--- ---cpu---
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r b swpd free buff cache si so bi bo in cs us sy id wa
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*/
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#endif
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static void new_header(void){
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printf("%5s%28s%10s%12s%11s%12s\n",
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"procs","memory","swap","io","system","cpu");
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printf("%2s %2s %2s %6s %6s %6s %6s %4s %4s %5s %5s %4s %5s %2s %2s %2s %2s\n",
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"r","b","w","swpd","free",
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a_option?"inact":"buff", a_option?"active":"cache",
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"si","so","bi","bo",
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"in","cs","us","sy","id","wa");
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printf("procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----\n");
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printf(
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"%2s %2s %6s %6s %6s %6s %4s %4s %5s %5s %4s %5s %2s %2s %2s %2s\n",
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"b","w",
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"swpd", "free", a_option?"inact":"buff", a_option?"active":"cache",
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"si","so",
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"bi","bo",
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"in","cs",
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"us","sy","id","wa"
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);
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}
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static void new_format(void) {
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@ -353,7 +354,7 @@ static void new_format(void) {
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int debt = 0; // handle idle ticks running backwards
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sleep_half=(sleep_time/2);
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old_header();
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new_header();
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getrunners(&running,&blocked,&r_swapp,&d_swapp);
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meminfo();
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@ -385,7 +386,7 @@ static void new_format(void) {
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for(i=1;i<num_updates;i++) { /* \\\\\\\\\\\\\\\\\\\\ main loop ////////////////// */
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sleep(sleep_time);
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if (moreheaders && ((i%height)==0)) old_header();
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if (moreheaders && ((i%height)==0)) new_header();
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tog= !tog;
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getrunners(&running,&blocked,&r_swapp,&d_swapp);
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@ -487,7 +488,7 @@ int main(int argc, char *argv[]) {
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setlinebuf(stdout);
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old_format();
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new_format();
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return 0;
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}
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