Date: Tue, 15 Apr 1997 18:48:45 +0400 (MSD) From: bag@sinbin.demos.su (Alex G. Bulushev) To: mishania@demos.su Cc: hackers@freebsd.org Subject: Re: mbuf clusters problem in 2.2.1R Message-ID: <199704151448.SAA17603@sinbin.demos.su> In-Reply-To: <199704141643.UAA22556@skraldespand.demos.su> from "Mikhail A. Sokolov" at Apr 14, 97 08:43:55 pm
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> now output of "netstat -m" 11 Apr 13:07 (4 min before crash)
>
> 14911 mbufs in use:
> 13719 mbufs allocated to data
> 1176 mbufs allocated to packet headers
> 14 mbufs allocated to protocol control blocks
> 2 mbufs allocated to socket names and addresses
> 11062/11070 mbuf clusters in use
> 24003 Kbytes allocated to network (-74% in use)
> ^^^^^^^ ??????????????????
i found that negative value is a result of wrong types in netstat sources.
Patch attached at the end of this letter ...
>
> now output of "netstat -m" 11 Apr 13:10 (1 min before crash)
>
> 18053 mbufs in use:
> 16818 mbufs allocated to data
> 1219 mbufs allocated to packet headers
> 14 mbufs allocated to protocol control blocks
> 2 mbufs allocated to socket names and addresses
> 14042/14060 mbuf clusters in use
> ^^^^^^^^^^^????????????????????????????????????????????
this value not understandable for me now ...
NMBCLUSTERS=12288 in kernel config
but 14060 > 12288 ............
> 30376 Kbytes allocated to network (-38% in use)
> ^^^^?????????????????????
now patch to netstat mbuf.c module for negative percents ...
this one for 2.2.1R ...
----------------------------------------------------------------
*** mbuf.c Tue Apr 15 17:52:31 1997
--- mbuf.c.orig Tue Apr 15 17:49:22 1997
***************
*** 79,85 ****
mbpr(mbaddr)
u_long mbaddr;
{
! register u_long totmem, totfree, totmbufs;
register int i;
register struct mbtypes *mp;
--- 79,85 ----
mbpr(mbaddr)
u_long mbaddr;
{
! register int totmem, totfree, totmbufs;
register int i;
register struct mbtypes *mp;
***************
*** 96,119 ****
totmbufs = 0;
for (mp = mbtypes; mp->mt_name; mp++)
totmbufs += mbstat.m_mtypes[mp->mt_type];
! printf("%lu mbufs in use:\n", totmbufs);
for (mp = mbtypes; mp->mt_name; mp++)
if (mbstat.m_mtypes[mp->mt_type]) {
seen[mp->mt_type] = YES;
! printf("\t%lu mbufs allocated to %s\n",
mbstat.m_mtypes[mp->mt_type], mp->mt_name);
}
seen[MT_FREE] = YES;
for (i = 0; i < nmbtypes; i++)
if (!seen[i] && mbstat.m_mtypes[i]) {
! printf("\t%lu mbufs allocated to <mbuf type %d>\n",
mbstat.m_mtypes[i], i);
}
printf("%lu/%lu mbuf clusters in use\n",
mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters);
totmem = totmbufs * MSIZE + mbstat.m_clusters * MCLBYTES;
totfree = mbstat.m_clfree * MCLBYTES;
! printf("%lu Kbytes allocated to network (%lu%% in use)\n",
totmem / 1024, (totmem - totfree) * 100 / totmem);
printf("%lu requests for memory denied\n", mbstat.m_drops);
printf("%lu requests for memory delayed\n", mbstat.m_wait);
--- 96,119 ----
totmbufs = 0;
for (mp = mbtypes; mp->mt_name; mp++)
totmbufs += mbstat.m_mtypes[mp->mt_type];
! printf("%u mbufs in use:\n", totmbufs);
for (mp = mbtypes; mp->mt_name; mp++)
if (mbstat.m_mtypes[mp->mt_type]) {
seen[mp->mt_type] = YES;
! printf("\t%u mbufs allocated to %s\n",
mbstat.m_mtypes[mp->mt_type], mp->mt_name);
}
seen[MT_FREE] = YES;
for (i = 0; i < nmbtypes; i++)
if (!seen[i] && mbstat.m_mtypes[i]) {
! printf("\t%u mbufs allocated to <mbuf type %d>\n",
mbstat.m_mtypes[i], i);
}
printf("%lu/%lu mbuf clusters in use\n",
mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters);
totmem = totmbufs * MSIZE + mbstat.m_clusters * MCLBYTES;
totfree = mbstat.m_clfree * MCLBYTES;
! printf("%u Kbytes allocated to network (%d%% in use)\n",
totmem / 1024, (totmem - totfree) * 100 / totmem);
printf("%lu requests for memory denied\n", mbstat.m_drops);
printf("%lu requests for memory delayed\n", mbstat.m_wait);
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