Date: Wed, 29 Mar 2006 19:18:18 -0500 From: Stephen Clark <Stephen.Clark@seclark.us> To: stable@freebsd.org Subject: 4.9 network not freeing memory Message-ID: <442B23CA.3060808@seclark.us>
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Hi, I realize this is a very old release but we have over a 1000 systems deployed so it is hard to upgrade. Anyway we are using gre/vpn/gif. If I stress test the system with netperf or nttcp I eventually run into the situation where netperf is in sbwait state and it stays there forever. I can't log into the machine with ssh but I can go in thru the console. If I try to ping localhost I get ping: sendto: No buffer space available. The only recourse to get things going again is reboot. If I do and netstat -m it shows I have mbufs available. The system is a Duron 1.6ghz with 256 mb of memory. What I am looking for is some direction on how to further diagnose the problem. this is before the problem $ netstat -m 2/736/131072 mbufs in use (current/peak/max): 2 mbufs allocated to data 0/672/32768 mbuf clusters in use (current/peak/max) 1528 Kbytes allocated to network (1% of mb_map in use) 0 requests for memory denied 0 requests for memory delayed 0 calls to protocol drain routines this is after the problem: 965/1376/131072 mbufs in use (current/peak/max): 965 mbufs allocated to data 872/876/32768 mbuf clusters in use (current/peak/max) 2096 Kbytes allocated to network (2% of mb_map in use) 0 requests for memory denied 0 requests for memory delayed 0 calls to protocol drain routines Any ideas would be greatly appreciated. Steve
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