kern.ipc.nmbclusters limit reached
Olivier.Nicole at cs.ait.ac.th
Tue Jun 30 09:31:44 UTC 2015
Thank you Ben,
>> Since I updated my amanda server to 10.1, I cannot complete a back-up,
>> the system will freeze in the middle of the dumps with bunches of error:
>> Jun 30 09:37:16 amanda kernel: [zone: mbuf_cluster] kern.ipc.nmbclusters
>> limit reached
>> The kernel is:
>> FreeBSD amanda.cs.ait.ac.th 10.1-RELEASE-p9 FreeBSD 10.1-RELEASE-p9 #0
>> r282829: Wed May 13 14:31:30 ICT 2015 root at amanda.cs.ait.ac.th:/usr/obj/usr/src/sys/GENERIC
>> sysctl kern.ipc.nmbclusters
>> kern.ipc.nmbclusters: 253064
>> This ipc.nmbcluster seems terribly high (like 0.5 GB memory), but that's
>> the value set by the kernel by default!
>> Something must be wrong there, but I don't know ehre to look.
>> Thanks in advance for the help,
> I guess you are using Intel igb(4) or em(4) network interface cards?
No, that MB uses nfe(4).
> This is a known issue, and the work around proposed by the pfsense project
> is to manually increased the nmbcluster limit:
> Add the following to /boot/loader.conf:
But I will try that anyway.
My concern is that 2048 Bytes per nmbcluster, makes it 2,048,000,000 two
giga bytes of memory?
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