top: show fewer decimal places for memory (by default)
After much reflection I've come to the conclusion that displaying 3 decimal places (usually) when memory data had been scaled is no longer optimal with today's ever increasing amounts. And given that not all task memory fields are the same widths, inconsistencies can easily arise as illustrated and discussed in the issue below. Instead of unilaterally reducing the number of decimal places, this commit will sneak in such a change via an existing configure option that was very likely unused. The former 'disable-wide-memory' option has now become 'enable-wide-memory', which can be used if the current behavior (3 decimal places) is preferred. Without that option, whenever memory is scaled beyond KiB, just one decimal place will be shown in Summary and Task areas. And Task area field width will no longer be changed by this revised configure option. Instead, all such field widths will now be fixed at the former maximum values. Reference(s): https://gitlab.com/procps-ng/procps/issues/50 Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner
Craig Small
parent
ddcdba18b7
commit
fe6e03d8a9
1
NEWS
1
NEWS
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@ -11,6 +11,7 @@ procps-ng-NEXT
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* pgrep: warn about 15+ char name only if -f not used
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* pkill: Return 0 only if we can kill process Debian #852758
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* kill: -l space between name parses correctly Debian #854407
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* top: show fewer memory decimal places (configurable)
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procps-ng-3.3.12
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----------------
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@ -201,11 +201,11 @@ if test "x$enable_wide_percent" = xyes; then
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fi
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AC_ARG_ENABLE([wide-memory],
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AS_HELP_STRING([--disable-wide-memory], [disable extra precision under memory fields for top]),
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[], [enable_wide_memory=yes]
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AS_HELP_STRING([--enable-wide-memory], [provide extra precision under memory fields for top]),
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[], [enable_wide_memory=no]
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)
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if test "x$enable_wide_memory" = xno; then
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AC_DEFINE(NOBOOST_MEMS, 1, [disable extra precision under memory fields for top])
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if test "x$enable_wide_memory" = xyes; then
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AC_DEFINE(BOOST_MEMORY, 1, [provide extra precision under memory fields for top])
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fi
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AC_ARG_ENABLE([modern-top],
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44
top/top.c
44
top/top.c
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@ -1548,11 +1548,11 @@ static inline const char *make_str (const char *str, int width, int justr, int c
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* We'll interpret 'num' as a kibibytes quantity and try to
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* format it to reach 'target' while also fitting 'width'. */
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static const char *scale_mem (int target, unsigned long num, int width, int justr) {
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#ifndef NOBOOST_MEMS
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// SK_Kb SK_Mb SK_Gb SK_Tb SK_Pb SK_Eb
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#ifdef BOOST_MEMORY
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static const char *fmttab[] = { "%.0f", "%#.1f%c", "%#.3f%c", "%#.3f%c", "%#.3f%c", NULL };
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#else
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static const char *fmttab[] = { "%.0f", "%.0f%c", "%.0f%c", "%.0f%c", "%.0f%c", NULL };
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static const char *fmttab[] = { "%.0f", "%.1f%c", "%.1f%c", "%.1f%c", "%.1f%c", NULL };
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#endif
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static char buf[SMLBUFSIZ];
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float scaled_num;
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@ -1757,21 +1757,12 @@ static FLD_t Fieldstab[] = {
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#else
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{ 4, -1, A_right, SF(RES), L_statm }, // EU_MEM slot
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#endif
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#ifndef NOBOOST_MEMS
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{ 7, SK_Kb, A_right, SF(VRT), L_statm },
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{ 6, SK_Kb, A_right, SF(SWP), L_status },
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{ 6, SK_Kb, A_right, SF(RES), L_statm },
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{ 6, SK_Kb, A_right, SF(COD), L_statm },
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{ 7, SK_Kb, A_right, SF(DAT), L_statm },
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{ 6, SK_Kb, A_right, SF(SHR), L_statm },
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#else
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{ 5, SK_Kb, A_right, SF(VRT), L_statm },
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{ 4, SK_Kb, A_right, SF(SWP), L_status },
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{ 4, SK_Kb, A_right, SF(RES), L_statm },
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{ 4, SK_Kb, A_right, SF(COD), L_statm },
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{ 5, SK_Kb, A_right, SF(DAT), L_statm },
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{ 4, SK_Kb, A_right, SF(SHR), L_statm },
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#endif
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{ 4, -1, A_right, SF(FL1), L_stat },
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{ 4, -1, A_right, SF(FL2), L_stat },
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{ 4, -1, A_right, SF(DRT), L_statm },
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@ -1788,11 +1779,7 @@ static FLD_t Fieldstab[] = {
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{ -1, -1, A_left, SF(ENV), L_ENVIRON },
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{ 3, -1, A_right, SF(FV1), L_stat },
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{ 3, -1, A_right, SF(FV2), L_stat },
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#ifndef NOBOOST_MEMS
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{ 6, SK_Kb, A_right, SF(USE), L_status },
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#else
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{ 4, SK_Kb, A_right, SF(USE), L_status },
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#endif
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{ 10, -1, A_right, SF(NS1), L_NS }, // IPCNS
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{ 10, -1, A_right, SF(NS2), L_NS }, // MNTNS
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{ 10, -1, A_right, SF(NS3), L_NS }, // NETNS
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@ -1800,17 +1787,10 @@ static FLD_t Fieldstab[] = {
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{ 10, -1, A_right, SF(NS5), L_NS }, // USERNS
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{ 10, -1, A_right, SF(NS6), L_NS }, // UTSNS
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{ 8, -1, A_left, SF(LXC), L_LXC },
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#ifndef NOBOOST_MEMS
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{ 6, SK_Kb, A_right, SF(RZA), L_status },
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{ 6, SK_Kb, A_right, SF(RZF), L_status },
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{ 6, SK_Kb, A_right, SF(RZL), L_status },
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{ 6, SK_Kb, A_right, SF(RZS), L_status },
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#else
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{ 4, SK_Kb, A_right, SF(RZA), L_status },
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{ 4, SK_Kb, A_right, SF(RZF), L_status },
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{ 4, SK_Kb, A_right, SF(RZL), L_status },
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{ 4, SK_Kb, A_right, SF(RZS), L_status },
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#endif
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{ -1, -1, A_left, SF(CGN), L_CGROUP }
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#undef SF
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#undef A_left
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@ -5254,12 +5234,20 @@ numa_nope:
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const char *fmts;
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const char *label;
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} scaletab[] = {
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{ 1, "%1.0f ", NULL }, // kibibytes
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{ 1024.0, "%#4.3f ", NULL }, // mebibytes
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{ 1024.0*1024, "%#4.3f ", NULL }, // gibibytes
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{ 1024.0*1024*1024, "%#4.3f ", NULL }, // tebibytes
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{ 1024.0*1024*1024*1024, "%#4.3f ", NULL }, // pebibytes
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{ 1024.0*1024*1024*1024*1024, "%#4.3f ", NULL } // exbibytes
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{ 1, "%.0f ", NULL }, // kibibytes
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#ifdef BOOST_MEMORY
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{ 1024.0, "%#.3f ", NULL }, // mebibytes
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{ 1024.0*1024, "%#.3f ", NULL }, // gibibytes
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{ 1024.0*1024*1024, "%#.3f ", NULL }, // tebibytes
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{ 1024.0*1024*1024*1024, "%#.3f ", NULL }, // pebibytes
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{ 1024.0*1024*1024*1024*1024, "%#.3f ", NULL } // exbibytes
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#else
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{ 1024.0, "%#.1f ", NULL }, // mebibytes
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{ 1024.0*1024, "%#.1f ", NULL }, // gibibytes
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{ 1024.0*1024*1024, "%#.1f ", NULL }, // tebibytes
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{ 1024.0*1024*1024*1024, "%#.1f ", NULL }, // pebibytes
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{ 1024.0*1024*1024*1024*1024, "%#.1f ", NULL } // exbibytes
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#endif
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};
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struct { // 0123456789
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// snprintf contents of each buf (after SK_Kb): 'nnnn.nnn 0'
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@ -23,8 +23,8 @@
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#include "../proc/readproc.h"
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/* Defines represented in configure.ac ----------------------------- */
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//#define BOOST_PERCNT /* enable extra precision for two % fields */
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//#define NOBOOST_MEMS /* disable extra precision for mem fields */
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//#define BOOST_MEMORY /* enable extra precision for mem fields */
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//#define BOOST_PERCNT /* enable extra precision for 2 % fields */
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//#define NUMA_DISABLE /* disable summary area NUMA/Nodes display */
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//#define ORIG_TOPDEFS /* with no rcfile retain original defaults */
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//#define SIGNALS_LESS /* favor reduced signal load over response */
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