Date: Wed, 21 Nov 2001 17:01:16 +0100 From: Andrea Campi <andrea@webcom.it> To: freebsd-current@freebsd.org Subject: send_packet: No buffer space available Message-ID: <20011121160116.GA6891@webcom.it>
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This is a long-standing problem which is getting more and more annoying (or
so I feel, might be just an impression). I was wondering if anybody might
be interested in helping me debug and fix it.
I can repeat this at will using Tivoli Storage Manager for Linux to backup
my -CURRENT laptop. Basically, after a few minutes I start getting these
messages; at that point networking is basically hosed until I kill TSM.
First of all, is this just an application misbehaving and it should be fixed
only by tuning some sysctl, or is it an OS bug proper? Note that -STABLE
doesn't exhibit this problem.
netstat -m output is as follow:
mbuf usage:
GEN list: 0/0 (in use/in pool)
CPU #0 list: 71/144 (in use/in pool)
Total: 71/144 (in use/in pool)
Maximum number allowed on each CPU list: 512
Maximum possible: 18432
Allocated mbuf types:
46 mbufs allocated to data
25 mbufs allocated to packet headers
0% of mbuf map consumed
mbuf cluster usage:
GEN list: 0/0 (in use/in pool)
CPU #0 list: 20/66 (in use/in pool)
Total: 20/66 (in use/in pool)
Maximum number allowed on each CPU list: 128
Maximum possible: 9216
0% of cluster map consumed
168 KBytes of wired memory reserved (34% in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
Relevant parts of vmstat -m:
Memory statistics by type Type Kern
Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)
mbufmgr 65 31K 32K 31594K 268785 0 0 16,32,64,128,8K,32K
What else is needed to diagnose this? It's been baffling me for much too long...
Bye,
Andrea
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