HACMP System does failover due to lack of Mbuf space.
System crashed: led 888.102.700.0c4
Env: 2-990's AIX 3.2.5 HACMP 3.1
Act: The crash is due to a dms timeout.
Desc: Customer wants to know what caused the dms timeout.
Act: run netstat -m
239 mbufs in use:
17 mbufs allocated to data
1 mbufs allocated to packet headers
137 mbufs allocated to socket structures
54 mbufs allocated to protocol control blocks
13 mbufs allocated to routing table entries
7 mbufs allocated to socket names and addresses
10 mbufs allocated to interface addresses
27/27 mapped pages in use
142 Kbytes allocated to network (100% in use)
23 requests for memory denied
78 requests for memory delayed
0 calls to protocol drain routines
netstat -m showed that Mbufs where running out of space due to improper
close of sockets. To resolve this problem make sure all sockets are
being closed properly and/or increase the amount of Mbuf space. Mbuf
space can be increased by performing the following command.
no -o thewall=1024 (Size in 1MB increaments)
This entry must be run each time the system is restarted or it can be
placed at the end of the /etc/rc.tcpip script.
Support Line: HACMP System does failover due to lack of Mbuf space. ITEM: AP4673L
Dated: March 1996 Category: N/A
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