[DragonFlyBSD - Bug #2825] 3x dhclient = hanging system (objcache exhausted)

[bugtracker-admin at leaf.dragonflybsd.org]

Issue #2825 has been updated by dillon.

Assignee set to sepherosa

You can temporarily work around this by increasing the number of mbuf clusters at system boot with:

kern.ipc.nmbclusters=32768

The default of 16384 clusters (or less) is not enough for the EM driver which I think can allocate as many as 2048 or even 4096 clusters for each EM device ring.

I'll assign this to Sephe for now and he and I will figure out a more permanent fix.

-Matt

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Bug #2825: 3x dhclient = hanging system (objcache exhausted)
http://bugs.dragonflybsd.org/issues/2825#change-12695

* Author: jaccovonb
* Status: New
* Priority: High
* Assignee: sepherosa
* Category: Networking
* Target version: 4.0.x
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Starting dhclient 3 times causes the system to hang:

    Warning, objcache(mbuf pkt hdr + cluster): Exhausted!

To reproduce, set the following in /etc/rc.conf:

ifconfig_em0="DHCP"
ifconfig_em1="DHCP"
ifconfig_em2="DHCP"





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