diff options
| author | Alexander Bluhm <bluhm@cvs.openbsd.org> | 2024-08-29 10:44:41 +0000 |
|---|---|---|
| committer | Alexander Bluhm <bluhm@cvs.openbsd.org> | 2024-08-29 10:44:41 +0000 |
| commit | 220e7eb3f89a88d35bc8e733892459bac690c6bd (patch) | |
| tree | 3f375a3fa1bebe05b0da588477908ff35b6c97b4 /usr.bin/netstat | |
| parent | fc6ac0186aa4c3bfbfc58f2b1259486e591addea (diff) | |
Show expensive mbuf operations in netstat(1) statistics.
If the memory layout is not optimal, m_defrag(), m_prepend(),
m_pullup(), and m_pulldown() will allocate mbufs or copy memory.
Count these operations to find possible optimizations.
input dhill@; OK mvs@
Diffstat (limited to 'usr.bin/netstat')
| -rw-r--r-- | usr.bin/netstat/mbuf.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/usr.bin/netstat/mbuf.c b/usr.bin/netstat/mbuf.c index 6eeeebe96f2..7660f832630 100644 --- a/usr.bin/netstat/mbuf.c +++ b/usr.bin/netstat/mbuf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: mbuf.c,v 1.45 2023/07/16 03:01:31 yasuoka Exp $ */ +/* $OpenBSD: mbuf.c,v 1.46 2024/08/29 10:44:40 bluhm Exp $ */ /* $NetBSD: mbuf.c,v 1.9 1996/05/07 02:55:03 thorpej Exp $ */ /* @@ -79,7 +79,7 @@ static struct mbtypes { }; int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(u_long); -bool seen[MBSTAT_COUNT]; /* "have we seen this type yet?" */ +bool seen[MBSTAT_TYPES]; /* "have we seen this type yet?" */ /* * Print mbuf statistics. @@ -93,7 +93,7 @@ mbpr(void) struct mbtypes *mp; size_t size; - if (nmbtypes != MBSTAT_COUNT) { + if (nmbtypes != MBSTAT_TYPES) { fprintf(stderr, "%s: unexpected change to mbstat; check source\n", __progname); @@ -205,4 +205,10 @@ mbpr(void) 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); + printf("%lu defrag mbuf allocation\n", mbstat.m_defrag_alloc); + printf("%lu prepend mbuf allocation\n", mbstat.m_prepend_alloc); + printf("%lu pullup mbuf allocation\n", mbstat.m_pullup_alloc); + printf("%lu pullup memory copy\n", mbstat.m_pullup_copy); + printf("%lu pulldown mbuf allocation\n", mbstat.m_pulldown_alloc); + printf("%lu pulldown memory copy\n", mbstat.m_pulldown_copy); } |