Commit a8ea0bf1 authored by Sergey Senozhatsky's avatar Sergey Senozhatsky Committed by Linus Torvalds
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tools/vm/slabinfo: output sizes in bytes 



Introduce "-B|--Bytes" opt to disable store_size() dynamic
size scaling and report size in bytes instead.

This `expands' the interface a bit, it's impossible to use
printf("%6s") anymore to output sizes.

Example:

slabinfo -X -N 2
 Slabcache Totals
 ----------------
 Slabcaches :              91   Aliases  :         119->69   Active:     63
 Memory used:       199798784   # Loss   :        10689376   MRatio:     5%
 # Objects  :          324301   # PartObj:           18151   ORatio:     5%

 Per Cache         Average              Min              Max            Total
 ----------------------------------------------------------------------------
 #Objects             5147                1            89068           324301
 #Slabs                199                1             3886            12537
 #PartSlab              12                0              240              778
 %PartSlab             32%               0%             100%               6%
 PartObjs                5                0             4569            18151
 % PartObj             26%               0%             100%               5%
 Memory            3171409             8192        127336448        199798784
 Used              3001736              160        121429728        189109408
 Loss               169672                0          5906720         10689376

 Per Object        Average              Min              Max
 -----------------------------------------------------------
 Memory                585                8             8192
 User                  583                8             8192
 Loss                    2                0               64

 Slabs sorted by size
 --------------------
 Name                   Objects Objsize           Space Slabs/Part/Cpu  O/S O %Fr %Ef Flg
 ext4_inode_cache         69948    1736       127336448      3871/0/15   18 3   0  95 a
 dentry                   89068     288        26058752      3164/0/17   28 1   0  98 a

 Slabs sorted by loss
 --------------------
 Name                   Objects Objsize            Loss Slabs/Part/Cpu  O/S O %Fr %Ef Flg
 ext4_inode_cache         69948    1736         5906720      3871/0/15   18 3   0  95 a
 inode_cache              11628     864          537472        642/0/4   18 2   0  94 a

Besides, store_size() does not use powers of two for G/M/K

    if (value > 1000000000UL) {
            divisor = 100000000UL;
            trailer = 'G';
    } else if (value > 1000000UL) {
            divisor = 100000UL;
            trailer = 'M';
    } else if (value > 1000UL) {
            divisor = 100;
            trailer = 'K';
    }

Signed-off-by: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 016c6cdf

tools/vm/slabinfo.c

+51 −37
Original line number Diff line number Diff line
@@ -82,6 +82,7 @@ int show_activity = 0; 
int output_lines = -1;

int sort_loss;

int extended_totals;

int show_bytes;



/* Debug options */

int sanity = 0;
@@ -130,6 +131,7 @@ static void usage(void) 
		"-N|--lines=K           Show the first K slabs\n"

		"-L|--Loss              Sort by loss\n"

		"-X|--Xtotals           Show extended summary information\n"

		"-B|--Bytes             Show size in bytes\n"

		"\nValid debug options (FZPUT may be combined)\n"

		"a / A          Switch on all debug options (=FZUP)\n"

		"-              Switch off all debug options\n"
@@ -231,6 +233,7 @@ static int store_size(char *buffer, unsigned long value) 
	char trailer = 0;

	int n;



	if (!show_bytes) {

		if (value > 1000000000UL) {

			divisor = 100000000UL;

			trailer = 'G';
@@ -241,6 +244,7 @@ static int store_size(char *buffer, unsigned long value) 
			divisor = 100;

			trailer = 'K';

		}

	}



	value /= divisor;

	n = sprintf(buffer, "%ld",value);
@@ -303,7 +307,8 @@ int line = 0; 
static void first_line(void)

{

	if (show_activity)

		printf("Name                   Objects      Alloc       Free   %%Fast Fallb O CmpX   UL\n");

		printf("Name                   Objects      Alloc       Free"

			"   %%Fast Fallb O CmpX   UL\n");

	else

		printf("Name                   Objects Objsize           %s "

			"Slabs/Part/Cpu  O/S O %%Fr %%Ef Flg\n",
@@ -516,7 +521,7 @@ static void report(struct slabinfo *s) 
	if (strcmp(s->name, "*") == 0)

		return;



	printf("\nSlabcache: %-20s  Aliases: %2d Order : %2d Objects: %lu\n",

	printf("\nSlabcache: %-15s  Aliases: %2d Order : %2d Objects: %lu\n",

		s->name, s->aliases, s->order, s->objects);

	if (s->hwcache_align)

		printf("** Hardware cacheline aligned\n");
@@ -618,7 +623,7 @@ static void slabcache(struct slabinfo *s) 
			s->order_fallback, s->order, s->cmpxchg_double_fail,

			s->cmpxchg_double_cpu_fail);

	} else {

		printf("%-21s %8ld %7d %8s %14s %4d %1d %3ld %3ld %s\n",

		printf("%-21s %8ld %7d %15s %14s %4d %1d %3ld %3ld %s\n",

			s->name, s->objects, s->object_size, size_str, dist_str,

			s->objs_per_slab, s->order,

			s->slabs ? (s->partial * 100) / s->slabs : 100,
@@ -933,84 +938,88 @@ static void totals(void) 


	printf("Slabcache Totals\n");

	printf("----------------\n");

	printf("Slabcaches : %3d      Aliases  : %3d->%-3d Active: %3d\n",

	printf("Slabcaches : %15d   Aliases  : %11d->%-3d  Active:    %3d\n",

			slabs, aliases, alias_targets, used_slabs);



	store_size(b1, total_size);store_size(b2, total_waste);

	store_size(b3, total_waste * 100 / total_used);

	printf("Memory used: %6s   # Loss   : %6s   MRatio:%6s%%\n", b1, b2, b3);

	printf("Memory used: %15s   # Loss   : %15s   MRatio:%6s%%\n", b1, b2, b3);



	store_size(b1, total_objects);store_size(b2, total_partobj);

	store_size(b3, total_partobj * 100 / total_objects);

	printf("# Objects  : %6s   # PartObj: %6s   ORatio:%6s%%\n", b1, b2, b3);

	printf("# Objects  : %15s   # PartObj: %15s   ORatio:%6s%%\n", b1, b2, b3);



	printf("\n");

	printf("Per Cache    Average         Min         Max       Total\n");

	printf("---------------------------------------------------------\n");

	printf("Per Cache         Average              "

		"Min              Max            Total\n");

	printf("---------------------------------------"

		"-------------------------------------\n");



	store_size(b1, avg_objects);store_size(b2, min_objects);

	store_size(b3, max_objects);store_size(b4, total_objects);

	printf("#Objects  %10s  %10s  %10s  %10s\n",

	printf("#Objects  %15s  %15s  %15s  %15s\n",

			b1,	b2,	b3,	b4);



	store_size(b1, avg_slabs);store_size(b2, min_slabs);

	store_size(b3, max_slabs);store_size(b4, total_slabs);

	printf("#Slabs    %10s  %10s  %10s  %10s\n",

	printf("#Slabs    %15s  %15s  %15s  %15s\n",

			b1,	b2,	b3,	b4);



	store_size(b1, avg_partial);store_size(b2, min_partial);

	store_size(b3, max_partial);store_size(b4, total_partial);

	printf("#PartSlab %10s  %10s  %10s  %10s\n",

	printf("#PartSlab %15s  %15s  %15s  %15s\n",

			b1,	b2,	b3,	b4);

	store_size(b1, avg_ppart);store_size(b2, min_ppart);

	store_size(b3, max_ppart);

	store_size(b4, total_partial * 100  / total_slabs);

	printf("%%PartSlab%10s%% %10s%% %10s%% %10s%%\n",

	printf("%%PartSlab%15s%% %15s%% %15s%% %15s%%\n",

			b1,	b2,	b3,	b4);



	store_size(b1, avg_partobj);store_size(b2, min_partobj);

	store_size(b3, max_partobj);

	store_size(b4, total_partobj);

	printf("PartObjs  %10s  %10s  %10s  %10s\n",

	printf("PartObjs  %15s  %15s  %15s  %15s\n",

			b1,	b2,	b3,	b4);



	store_size(b1, avg_ppartobj);store_size(b2, min_ppartobj);

	store_size(b3, max_ppartobj);

	store_size(b4, total_partobj * 100 / total_objects);

	printf("%% PartObj%10s%% %10s%% %10s%% %10s%%\n",

	printf("%% PartObj%15s%% %15s%% %15s%% %15s%%\n",

			b1,	b2,	b3,	b4);



	store_size(b1, avg_size);store_size(b2, min_size);

	store_size(b3, max_size);store_size(b4, total_size);

	printf("Memory    %10s  %10s  %10s  %10s\n",

	printf("Memory    %15s  %15s  %15s  %15s\n",

			b1,	b2,	b3,	b4);



	store_size(b1, avg_used);store_size(b2, min_used);

	store_size(b3, max_used);store_size(b4, total_used);

	printf("Used      %10s  %10s  %10s  %10s\n",

	printf("Used      %15s  %15s  %15s  %15s\n",

			b1,	b2,	b3,	b4);



	store_size(b1, avg_waste);store_size(b2, min_waste);

	store_size(b3, max_waste);store_size(b4, total_waste);

	printf("Loss      %10s  %10s  %10s  %10s\n",

	printf("Loss      %15s  %15s  %15s  %15s\n",

			b1,	b2,	b3,	b4);



	printf("\n");

	printf("Per Object   Average         Min         Max\n");

	printf("---------------------------------------------\n");

	printf("Per Object        Average              "

		"Min              Max\n");

	printf("---------------------------------------"

		"--------------------\n");



	store_size(b1, avg_memobj);store_size(b2, min_memobj);

	store_size(b3, max_memobj);

	printf("Memory    %10s  %10s  %10s\n",

	printf("Memory    %15s  %15s  %15s\n",

			b1,	b2,	b3);

	store_size(b1, avg_objsize);store_size(b2, min_objsize);

	store_size(b3, max_objsize);

	printf("User      %10s  %10s  %10s\n",

	printf("User      %15s  %15s  %15s\n",

			b1,	b2,	b3);



	store_size(b1, avg_objwaste);store_size(b2, min_objwaste);

	store_size(b3, max_objwaste);

	printf("Loss      %10s  %10s  %10s\n",

	printf("Loss      %15s  %15s  %15s\n",

			b1,	b2,	b3);

}
@@ -1112,7 +1121,7 @@ static void alias(void) 
			active = a->slab->name;

		}

		else

			printf("%-20s -> %s\n", a->name, a->slab->name);

			printf("%-15s -> %s\n", a->name, a->slab->name);

	}

	if (active)

		printf("\n");
@@ -1296,14 +1305,14 @@ static void xtotals(void) 
	rename_slabs();



	printf("\nSlabs sorted by size\n");

	printf("----------------------\n");

	printf("--------------------\n");

	sort_loss = 0;

	sort_size = 1;

	sort_slabs();

	output_slabs();



	printf("\nSlabs sorted by loss\n");

	printf("----------------------\n");

	printf("--------------------\n");

	line = 0;

	sort_loss = 1;

	sort_size = 0;
@@ -1335,6 +1344,7 @@ struct option opts[] = { 
	{ "lines", required_argument, NULL, 'N'},

	{ "Loss", no_argument, NULL, 'L'},

	{ "Xtotals", no_argument, NULL, 'X'},

	{ "Bytes", no_argument, NULL, 'B'},

	{ NULL, 0, NULL, 0 }

};
@@ -1346,7 +1356,7 @@ int main(int argc, char *argv[]) 


	page_size = getpagesize();



	while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTSN:LX",

	while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTSN:LXB",

						opts, NULL)) != -1)

		switch (c) {

		case '1':
@@ -1422,6 +1432,10 @@ int main(int argc, char *argv[]) 
			if (output_lines == -1)

				output_lines = 1;

			extended_totals = 1;

			show_bytes = 1;

			break;

		case 'B':

			show_bytes = 1;

			break;

		default:

			fatal("%s: Invalid option '%c'\n", argv[0], optopt);

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