kern/165903: mbuf leak

Chris Forgeron cforgeron at acsi.ca
Sat Apr 13 23:03:40 UTC 2013


To follow-up:

I installed 9.1-RELEASE last night, then went and cvsup'ed to the latest that RELENG_9 would give me.

Everything is completely stock, I have not modified any config files other than filling out the setup questions (hostname, em0 set to DHCP, added a base user so I can ssh to it)

Mu current uname -a is: FreeBSD test 9.1-STABLE FreeBSD 9.1-STABLE #0: Sat Apr 13 00:29:24 ADT 2013     root at test:/usr/obj/usr/src/sys/GENERIC  amd64

I am still having the same mbuf drain problem, that doesn't exist on 9.0-STABLE of July 2012.

It's only been 2 hours since my last reboot, and you can already see the drain starting. I expect this box will be unresponsive on the network sometime tomorrow.

All that has been running is a ssh connection that wasn't moving any traffic.


Here is a dump of the requested logs. Please note that I give the stats at boot, then ~2 hours later.

Please let me know how I can help this move forward. 

-------------------------------------------------
After Boot


Sat Apr 13 17:41:04 ADT 2013
root at test:/usr/home/aatech # vmstat -z
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP

UMA Kegs:               208,      0,      89,      13,      89,   0,   0
UMA Zones:              640,      0,      89,       1,      89,   0,   0
UMA Slabs:              568,      0,    3817,       5,    6208,   0,   0
UMA RCntSlabs:          568,      0,     273,       0,     273,   0,   0
UMA Hash:               256,      0,       3,      12,       4,   0,   0
16 Bucket:              152,      0,      64,      11,      64,   0,   0
32 Bucket:              280,      0,      51,       5,      51,   0,   0
64 Bucket:              536,      0,      34,       1,      34,  62,   0
128 Bucket:            1048,      0,      41,       1,      41, 676,   0
VM OBJECT:              232,      0,     977,      31,   10100,   0,   0
MAP:                    232,      0,       7,      25,       7,   0,   0
KMAP ENTRY:             120, 150257,      33,     246,    8450,   0,   0
MAP ENTRY:              120,      0,     753,     115,   23051,   0,   0
fakepg:                 120,      0,       0,       0,       0,   0,   0
mt_zone:               4112,      0,     323,       4,     323,   0,   0
16:                      16,      0,    2486,     202,   38914,   0,   0
32:                      32,      0,    2990,     444,   16915,   0,   0
64:                      64,      0,    7243,     261,   37658,   0,   0
128:                    128,      0,    8311,     186,   12364,   0,   0
256:                    256,      0,     465,      75,    3012,   0,   0
512:                    512,      0,     613,      66,    3743,   0,   0
1024:                  1024,      0,      34,     162,    4785,   0,   0
2048:                  2048,      0,    5129,     141,    5692,   0,   0
4096:                  4096,      0,     421,      34,    6083,   0,   0
Files:                   80,      0,      78,     102,    3712,   0,   0
rl_entry:                40,      0,      29,     223,      29,   0,   0
TURNSTILE:              136,      0,     115,      45,     115,   0,   0
umtx pi:                 96,      0,       0,       0,       0,   0,   0
MAC labels:              40,      0,       0,       0,       0,   0,   0
PROC:                  1184,      0,      44,      28,     893,   0,   0
THREAD:                1160,      0,      98,      16,      98,   0,   0
SLEEPQUEUE:              80,      0,     115,      30,     115,   0,   0
VMSPACE:                392,      0,      26,      24,     876,   0,   0
cpuset:                  72,      0,      51,      49,      51,   0,   0
audit_record:           960,      0,       0,       0,       0,   0,   0
mbuf_packet:            256,      0,     288,     224,    1462,   0,   0
mbuf:                   256,      0,       2,     266,     380,   0,   0
mbuf_cluster:          2048,  25600,     512,      16,     512,   0,   0
mbuf_jumbo_page:       4096,  12800,       0,       9,       6,   0,   0
mbuf_jumbo_9k:         9216,   6400,       0,       0,       0,   0,   0
mbuf_jumbo_16k:       16384,   3200,       0,       0,       0,   0,   0
mbuf_ext_refcnt:          4,      0,       0,       0,       0,   0,   0
g_bio:                  232,      0,       0,     144,    3498,   0,   0
ttyinq:                 160,      0,     180,      60,     765,   0,   0
ttyoutq:                256,      0,      95,      25,     407,   0,   0
ata_request:            328,      0,       0,      48,      86,   0,   0
ata_composite:          336,      0,       0,       0,       0,   0,   0
vtnet_tx_hdr:            24,      0,       0,       0,       0,   0,   0
FPU_save_area:          832,      0,       0,       0,       0,   0,   0
VNODE:                  504,      0,     490,      30,     516,   0,   0
VNODEPOLL:              112,      0,       0,       0,       0,   0,   0
NAMEI:                 1024,      0,       0,      36,    7095,   0,   0
S VFS Cache:            108,      0,     475,      53,    1000,   0,   0
STS VFS Cache:          148,      0,       0,       0,       0,   0,   0
L VFS Cache:            328,      0,       0,       0,       0,   0,   0
LTS VFS Cache:          368,      0,       0,       0,       0,   0,   0
NCLNODE:                568,      0,       0,       0,       0,   0,   0
DIRHASH:               1024,      0,      23,      13,      23,   0,   0
pipe:                   728,      0,       2,      28,     460,   0,   0
Mountpoints:            824,      0,       2,       6,       2,   0,   0
ksiginfo:               112,      0,      57,     999,      63,   0,   0
itimer:                 344,      0,       1,      21,       1,   0,   0
KNOTE:                  128,      0,       0,      87,      40,   0,   0
socket:                 680,  25602,      23,      13,     283,   0,   0
ipq:                     56,    819,       0,       0,       0,   0,   0
udp_inpcb:              392,  25600,       8,      22,     222,   0,   0
udpcb:                   16,  25704,       8,     328,     222,   0,   0
tcp_inpcb:              392,  25600,       4,      26,      10,   0,   0
tcpcb:                  976,  25600,       4,       8,      10,   0,   0
tcptw:                   72,   5150,       0,       0,       0,   0,   0
syncache:               152,  15375,       0,      50,       1,   0,   0
hostcache:              136,  15372,       0,       0,       0,   0,   0
tcpreass:                40,   1680,       0,       0,       0,   0,   0
sackhole:                32,      0,       0,       0,       0,   0,   0
sctp_ep:               1376,  25600,       0,       0,       0,   0,   0
sctp_asoc:             2288,  40000,       0,       0,       0,   0,   0
sctp_laddr:              48,  80064,       0,     216,       3,   0,   0
sctp_raddr:             704,  80000,       0,       0,       0,   0,   0
sctp_chunk:             136, 400008,       0,       0,       0,   0,   0
sctp_readq:             104, 400032,       0,       0,       0,   0,   0
sctp_stream_msg_out:    112, 400026,       0,       0,       0,   0,   0
sctp_asconf:             40, 400008,       0,       0,       0,   0,   0
sctp_asconf_ack:         48, 400032,       0,       0,       0,   0,   0
ripcb:                  392,  25600,       1,      19,       1,   0,   0
unpcb:                  240,  25600,       8,      40,      40,   0,   0
rtentry:                200,      0,      13,      44,      14,   0,   0
selfd:                   56,      0,      38,     151,    2435,   0,   0
SWAPMETA:               288, 502372,       0,       0,       0,   0,   0
FFS inode:              168,      0,     453,      53,     477,   0,   0
FFS1 dinode:            128,      0,       0,       0,       0,   0,   0
FFS2 dinode:            256,      0,     453,      27,     477,   0,   0

root at test:/usr/home/aatech # netstat -Q
Configuration:
Setting                        Current        Limit
Thread count                         1            1
Default queue limit                256        10240
Dispatch policy                 direct          n/a
Threads bound to CPUs         disabled          n/a

Protocols:
Name   Proto QLimit Policy Dispatch Flags
ip         1    256   flow  default   ---
igmp       2    256 source  default   ---
rtsock     3    256 source  default   ---
arp        7    256 source  default   ---
ether      9    256 source   direct   ---
ip6       10    256   flow  default   ---

Workstreams:
WSID CPU   Name     Len WMark   Disp'd  HDisp'd   QDrops   Queued  Handled
   0   0   ip         0     0        6        0        0        0        6
   0   0   igmp       0     0        0        0        0        0        0
   0   0   rtsock     0     2        0        0        0       16       16
   0   0   arp        0     0        1        0        0        0        1
   0   0   ether      0     0        7        0        0        0        7
   0   0   ip6        0     0        0        0        0        0        0
root at test:/usr/home/aatech # netstat -n -x
Active Internet connections
Proto Recv-Q Send-Q Local Address          Foreign Address        R-MBUF S-MBUF R-CLUS S-CLUS R-HIWA S-HIWA R-LOWA S-LOWA 

R-BCNT S-BCNT R-BMAX S-BMAX   rexmt persist    keep    2msl  delack rcvtime
tcp4       0     52 192.168.9.224.22       192.168.9.108.61563         0      1      0      0  65700  33580      1   2048 

     0    256 525600 268640    0.37    0.00 7199.90    0.00    0.00    0.10
udp4       0      0 127.0.0.1.123          *.*                         0      0      0      0  42080   9216      1   2048 

     0      0 336640  73728
udp6       0      0 fe80:4::1.123          *.*                         0      0      0      0  42080   9216      1   2048 

     0      0 336640  73728
udp6       0      0 ::1.123                *.*                         0      0      0      0  42080   9216      1   2048 

     0      0 336640  73728
udp4       0      0 192.168.9.224.123      *.*                         0      0      0      0  42080   9216      1   2048 

     0      0 336640  73728
Active UNIX domain sockets
Address  Type   Recv-Q Send-Q    Inode     Conn     Refs  Nextref Addr
fffffe00064ab690 stream      0      0        0 fffffe00064ab5a0        0        0
fffffe00064ab5a0 stream      0      0        0 fffffe00064ab690        0        0
fffffe00064a00f0 stream      0      0 fffffe00063e8bd0        0        0        0 /var/run/devd.pipe
fffffe00064aa5a0 dgram       0      0        0 fffffe00064aa960        0        0
fffffe00064ab0f0 dgram       0      0        0 fffffe00064aa870        0 fffffe00064ab1e0
fffffe00064ab1e0 dgram       0      0        0 fffffe00064aa870        0        0
fffffe00064aa870 dgram       0      0 fffffe0006531bd0        0 fffffe00064ab0f0        0 /var/run/logpriv
fffffe00064aa960 dgram       0      0 fffffe0006531dc8        0 fffffe00064aa5a0        0 /var/run/log
root at test:/usr/home/aatech # netstat -m
298/737/1035 mbufs in use (current/cache/total)
296/360/656/25600 mbuf clusters in use (current/cache/total/max)
296/344 mbuf+clusters out of packet secondary zone in use (current/cache)
0/9/9/12800 4k (page size) jumbo clusters in use (current/cache/total/max)
0/0/0/6400 9k jumbo clusters in use (current/cache/total/max)
0/0/0/3200 16k jumbo clusters in use (current/cache/total/max)
666K/940K/1606K bytes allocated to network (current/cache/total)
0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters)
0/0/0 requests for jumbo clusters delayed (4k/9k/16k)
0/0/0 requests for jumbo clusters denied (4k/9k/16k)
0/0/0 sfbufs in use (current/peak/max)
0 requests for sfbufs denied
0 requests for sfbufs delayed
0 requests for I/O initiated by sendfile
0 calls to protocol drain routines


----------------------------------------------------
After ~2 hours

root at test:/usr/home/aatech # date
Sat Apr 13 19:32:34 ADT 2013
root at test:/usr/home/aatech # netstat -m
1616/694/2310 mbufs in use (current/cache/total)
1614/322/1936/25600 mbuf clusters in use (current/cache/total/max)
1614/306 mbuf+clusters out of packet secondary zone in use (current/cache)
0/9/9/12800 4k (page size) jumbo clusters in use (current/cache/total/max)
0/0/0/6400 9k jumbo clusters in use (current/cache/total/max)
0/0/0/3200 16k jumbo clusters in use (current/cache/total/max)
3632K/853K/4485K bytes allocated to network (current/cache/total)
0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters)
0/0/0 requests for jumbo clusters delayed (4k/9k/16k)
0/0/0 requests for jumbo clusters denied (4k/9k/16k)
0/0/0 sfbufs in use (current/peak/max)
0 requests for sfbufs denied
0 requests for sfbufs delayed
0 requests for I/O initiated by sendfile
0 calls to protocol drain routines

root at test:/usr/home/aatech # vmstat -z
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP

UMA Kegs:               208,      0,      89,      13,      89,   0,   0
UMA Zones:              640,      0,      89,       1,      89,   0,   0
UMA Slabs:              568,      0,    3851,       6,    6244,   0,   0
UMA RCntSlabs:          568,      0,     977,       3,     977,   0,   0
UMA Hash:               256,      0,       3,      12,       4,   0,   0
16 Bucket:              152,      0,      65,      10,      65,   0,   0
32 Bucket:              280,      0,      51,       5,      51,   0,   0
64 Bucket:              536,      0,      40,       2,      40,  62,   0
128 Bucket:            1048,      0,      43,       2,      43, 676,   0
VM OBJECT:              232,      0,    1001,      87,   13050,   0,   0
MAP:                    232,      0,       7,      25,       7,   0,   0
KMAP ENTRY:             120, 150257,      33,     246,    8454,   0,   0
MAP ENTRY:              120,      0,     753,     146,   29632,   0,   0
fakepg:                 120,      0,       0,       0,       0,   0,   0
mt_zone:               4112,      0,     323,       4,     323,   0,   0
16:                      16,      0,    2486,     202,   40587,   0,   0
32:                      32,      0,    2990,     444,   17187,   0,   0
64:                      64,      0,    7260,     300,   41779,   0,   0
128:                    128,      0,    8367,     275,   13151,   0,   0
256:                    256,      0,     469,      71,    4864,   0,   0
512:                    512,      0,     637,      91,    4628,   0,   0
1024:                  1024,      0,      34,     162,    5307,   0,   0
2048:                  2048,      0,    5129,     141,    5694,   0,   0
4096:                  4096,      0,     421,      66,    6369,   0,   0
Files:                   80,      0,      78,     147,    5507,   0,   0
rl_entry:                40,      0,      43,     209,      43,   0,   0
TURNSTILE:              136,      0,     133,      27,     133,   0,   0
umtx pi:                 96,      0,       0,       0,       0,   0,   0
MAC labels:              40,      0,       0,       0,       0,   0,   0
PROC:                  1184,      0,      44,      43,    1158,   0,   0
THREAD:                1160,      0,     116,      16,     116,   0,   0
SLEEPQUEUE:              80,      0,     133,      41,     133,   0,   0
VMSPACE:                392,      0,      26,      24,    1076,   0,   0
cpuset:                  72,      0,      51,      49,      51,   0,   0
audit_record:           960,      0,       0,       0,       0,   0,   0
mbuf_packet:            256,      0,    1622,     298,   31168,   0,   0
mbuf:                   256,      0,       2,     388,    5267,   0,   0
mbuf_cluster:          2048,  25600,    1920,      16,    1920,   0,   0
mbuf_jumbo_page:       4096,  12800,       0,       9,       6,   0,   0
mbuf_jumbo_9k:         9216,   6400,       0,       0,       0,   0,   0
mbuf_jumbo_16k:       16384,   3200,       0,       0,       0,   0,   0
mbuf_ext_refcnt:          4,      0,       0,       0,       0,   0,   0
g_bio:                  232,      0,       0,     144,    5175,   0,   0
ttyinq:                 160,      0,     180,      60,     765,   0,   0
ttyoutq:                256,      0,      95,      25,     407,   0,   0
ata_request:            328,      0,       0,      48,    2315,   0,   0
ata_composite:          336,      0,       0,       0,       0,   0,   0
vtnet_tx_hdr:            24,      0,       0,       0,       0,   0,   0
FPU_save_area:          832,      0,       0,       0,       0,   0,   0
VNODE:                  504,      0,     497,      23,     537,   0,   0
VNODEPOLL:              112,      0,       0,       0,       0,   0,   0
NAMEI:                 1024,      0,       0,      36,   13140,   0,   0
S VFS Cache:            108,      0,     471,     123,    1525,   0,   0
STS VFS Cache:          148,      0,       0,       0,       0,   0,   0
L VFS Cache:            328,      0,       0,       0,       0,   0,   0
LTS VFS Cache:          368,      0,       0,       0,       0,   0,   0
NCLNODE:                568,      0,       0,       0,       0,   0,   0
DIRHASH:               1024,      0,      23,      13,      23,   0,   0
pipe:                   728,      0,       2,      28,     534,   0,   0
Mountpoints:            824,      0,       2,       6,       2,   0,   0
ksiginfo:               112,      0,      75,     981,     311,   0,   0
itimer:                 344,      0,       1,      21,       1,   0,   0
KNOTE:                  128,      0,       0,      87,      40,   0,   0
socket:                 680,  25602,      23,      25,     443,   0,   0
ipq:                     56,    819,       0,       0,       0,   0,   0
udp_inpcb:              392,  25600,       8,      22,     336,   0,   0
udpcb:                   16,  25704,       8,     328,     336,   0,   0
tcp_inpcb:              392,  25600,       4,      26,      14,   0,   0
tcpcb:                  976,  25600,       4,       8,      14,   0,   0
tcptw:                   72,   5150,       0,     100,       2,   0,   0
syncache:               152,  15375,       0,      50,       3,   0,   0
hostcache:              136,  15372,       0,       0,       0,   0,   0
tcpreass:                40,   1680,       0,       0,       0,   0,   0
sackhole:                32,      0,       0,       0,       0,   0,   0
sctp_ep:               1376,  25600,       0,       0,       0,   0,   0
sctp_asoc:             2288,  40000,       0,       0,       0,   0,   0
sctp_laddr:              48,  80064,       0,     216,       3,   0,   0
sctp_raddr:             704,  80000,       0,       0,       0,   0,   0
sctp_chunk:             136, 400008,       0,       0,       0,   0,   0
sctp_readq:             104, 400032,       0,       0,       0,   0,   0
sctp_stream_msg_out:    112, 400026,       0,       0,       0,   0,   0
sctp_asconf:             40, 400008,       0,       0,       0,   0,   0
sctp_asconf_ack:         48, 400032,       0,       0,       0,   0,   0
ripcb:                  392,  25600,       1,      19,       1,   0,   0
unpcb:                  240,  25600,       8,      40,      82,   0,   0
rtentry:                200,      0,      13,      44,      14,   0,   0
selfd:                   56,      0,      42,     147,   64963,   0,   0
SWAPMETA:               288, 502372,       0,       0,       0,   0,   0
FFS inode:              168,      0,     459,      47,     496,   0,   0
FFS1 dinode:            128,      0,       0,       0,       0,   0,   0
FFS2 dinode:            256,      0,     459,      21,     496,   0,   0

root at test:/usr/home/aatech # 
root at test:/usr/home/aatech # netstat -Q
Configuration:
Setting                        Current        Limit
Thread count                         1            1
Default queue limit                256        10240
Dispatch policy                 direct          n/a
Threads bound to CPUs         disabled          n/a

Protocols:
Name   Proto QLimit Policy Dispatch Flags
ip         1    256   flow  default   ---
igmp       2    256 source  default   ---
rtsock     3    256 source  default   ---
arp        7    256 source  default   ---
ether      9    256 source   direct   ---
ip6       10    256   flow  default   ---

Workstreams:
WSID CPU   Name     Len WMark   Disp'd  HDisp'd   QDrops   Queued  Handled
   0   0   ip         0     0      166        0        0        0      166
   0   0   igmp       0     0        0        0        0        0        0
   0   0   rtsock     0     2        0        0        0       16       16
   0   0   arp        0     0       63        0        0        0       63
   0   0   ether      0     0      229        0        0        0      229
   0   0   ip6        0     0        0        0        0        0        0
root at test:/usr/home/aatech # 

root at test:/usr/home/aatech # netstat -n -x
Active Internet connections
Proto Recv-Q Send-Q Local Address          Foreign Address        R-MBUF S-MBUF R-CLUS S-CLUS R-HIWA S-HIWA R-LOWA S-LOWA 

R-BCNT S-BCNT R-BMAX S-BMAX   rexmt persist    keep    2msl  delack rcvtime
tcp4       0     52 192.168.9.224.22       192.168.9.108.61563         0      1      0      0  65700  33580      1   2048 

     0    256 525600 268640    0.41    0.00 7199.92    0.00    0.00    0.08
udp4       0      0 127.0.0.1.123          *.*                         0      0      0      0  42080   9216      1   2048 

     0      0 336640  73728
udp6       0      0 fe80:4::1.123          *.*                         0      0      0      0  42080   9216      1   2048 

     0      0 336640  73728
udp6       0      0 ::1.123                *.*                         0      0      0      0  42080   9216      1   2048 

     0      0 336640  73728
udp4       0      0 192.168.9.224.123      *.*                         0      0      0      0  42080   9216      1   2048 

     0      0 336640  73728
Active UNIX domain sockets
Address  Type   Recv-Q Send-Q    Inode     Conn     Refs  Nextref Addr
fffffe00064ab690 stream      0      0        0 fffffe00064ab5a0        0        0
fffffe00064ab5a0 stream      0      0        0 fffffe00064ab690        0        0
fffffe00064a00f0 stream      0      0 fffffe00063e8bd0        0        0        0 /var/run/devd.pipe
fffffe00064aa5a0 dgram       0      0        0 fffffe00064aa960        0        0
fffffe00064ab0f0 dgram       0      0        0 fffffe00064aa870        0 fffffe00064ab1e0
fffffe00064ab1e0 dgram       0      0        0 fffffe00064aa870        0        0
fffffe00064aa870 dgram       0      0 fffffe0006531bd0        0 fffffe00064ab0f0        0 /var/run/logpriv
fffffe00064aa960 dgram       0      0 fffffe0006531dc8        0 fffffe00064aa5a0        0 /var/run/log
root at test:/usr/home/aatech #


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