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Add a "X KBytes of wired memory reserved" metric that represents

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approximately the amount of memory allocated from the mbuf maps
and sitting in the mbuf allocator's cache containers, and display
in parantheses the percentage of said memory that is actually
in use at the given time `netstat -m' is executed.

Suggested by: mjacob
This commit is contained in:
Bosko Milekic 2001-07-31 08:19:49 +00:00
parent 79e15ef30c
commit a8a35cdd91
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=80720
1 changed files with 14 additions and 11 deletions
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25
usr.bin/netstat/mbuf.c
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@ -104,7 +104,7 @@ mbpr(u_long mbaddr, u_long mbtaddr, u_long nmbcaddr, u_long nmbufaddr,
{
int i, nmbufs, nmbclusters, page_size, num_objs;
u_int mbuf_limit, clust_limit;
u_long totspace, totnum, totfree;
u_long totspace[2], totused[2], totnum, totfree;
size_t mlen;
struct mbstat *mbstat = NULL;
struct mbpstat **mbpstat = NULL;
@ -250,22 +250,22 @@ mbpr(u_long mbaddr, u_long mbtaddr, u_long nmbcaddr, u_long nmbufaddr,
(mbpstat[GENLST]->mb_mbpgs * MBPERPG));
totnum = mbpstat[GENLST]->mb_mbpgs * MBPERPG;
totfree = mbpstat[GENLST]->mb_mbfree;
totspace = mbpstat[GENLST]->mb_mbpgs * page_size;
totspace[0] = mbpstat[GENLST]->mb_mbpgs * page_size;
for (i = 0; i < (num_objs - 1); i++) {
if (mbpstat[i]->mb_active == 0)
continue;
printf("\tCPU #%d list:\t%lu/%lu (in use/in pool)\n", i,
(mbpstat[i]->mb_mbpgs * MBPERPG - mbpstat[i]->mb_mbfree),
(mbpstat[i]->mb_mbpgs * MBPERPG));
totspace += mbpstat[i]->mb_mbpgs * page_size;
totspace[0] += mbpstat[i]->mb_mbpgs * page_size;
totnum += mbpstat[i]->mb_mbpgs * MBPERPG;
totfree += mbpstat[i]->mb_mbfree;
}
printf("\tTotal:\t\t%lu/%lu (in use/in pool)\n", (totnum - totfree),
totnum);
totused[0] = totnum - totfree;
printf("\tTotal:\t\t%lu/%lu (in use/in pool)\n", totused[0], totnum);
printf("\tMaximum number allowed on each CPU list: %d\n", mbuf_limit);
printf("\tMaximum possible: %d\n", nmbufs);
printf("\t%lu%% of mbuf map consumed\n", ((totspace * 100) / (nmbufs
printf("\t%lu%% of mbuf map consumed\n", ((totspace[0] * 100) / (nmbufs
* MSIZE)));
printf("mbuf cluster usage:\n");
@ -274,24 +274,27 @@ mbpr(u_long mbaddr, u_long mbtaddr, u_long nmbcaddr, u_long nmbufaddr,
(mbpstat[GENLST]->mb_clpgs * CLPERPG));
totnum = mbpstat[GENLST]->mb_clpgs * CLPERPG;
totfree = mbpstat[GENLST]->mb_clfree;
totspace = mbpstat[GENLST]->mb_clpgs * page_size;
totspace[1] = mbpstat[GENLST]->mb_clpgs * page_size;
for (i = 0; i < (num_objs - 1); i++) {
if (mbpstat[i]->mb_active == 0)
continue;
printf("\tCPU #%d list:\t%lu/%lu (in use/in pool)\n", i,
(mbpstat[i]->mb_clpgs * CLPERPG - mbpstat[i]->mb_clfree),
(mbpstat[i]->mb_clpgs * CLPERPG));
totspace += mbpstat[i]->mb_clpgs * page_size;
totspace[1] += mbpstat[i]->mb_clpgs * page_size;
totnum += mbpstat[i]->mb_clpgs * CLPERPG;
totfree += mbpstat[i]->mb_clfree;
}
printf("\tTotal:\t\t%lu/%lu (in use/in pool)\n", (totnum - totfree),
totnum);
totused[1] = totnum - totfree;
printf("\tTotal:\t\t%lu/%lu (in use/in pool)\n", totused[1], totnum);
printf("\tMaximum number allowed on each CPU list: %d\n", clust_limit);
printf("\tMaximum possible: %d\n", nmbclusters);
printf("\t%lu%% of cluster map consumed\n", ((totspace * 100) /
printf("\t%lu%% of cluster map consumed\n", ((totspace[1] * 100) /
(nmbclusters * MCLBYTES)));
printf("%lu KBytes of wired memory reserved (%lu%% in use)\n",
(totspace[0] + totspace[1]) / 1024, ((totused[0] * MSIZE +
totused[1] * MCLBYTES) * 100) / (totspace[0] + totspace[1]));
printf("%lu requests for memory denied\n", mbstat->m_drops);
printf("%lu requests for memory delayed\n", mbstat->m_wait);
printf("%lu calls to protocol drain routines\n", mbstat->m_drain);