Re: cq error timeout issue

[Hal Rosenstock <hal-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>]

Just to clarify:

On 11/1/2011 9:25 AM, Vlad Weinbaum wrote:
> packet_life_time is 12 in sm.conf.

OpenSM packet_life_time setting has nothing to do with this (but is used
for SwitchInfo:LifeTimeValue setting):

# The code of maximal time a packet can live in a switch
# The actual time is 4.096usec * 2^<packet_life_time>
# The value 0x14 disables this mechanism

The rate in SA PathRecord comes from subnet timeout in the absence of QoS:
        /*
         * Set packet lifetime.
         * According to spec definition IBA 1.2 Table 205
         * PacketLifeTime description, for loopback paths,
         * packetLifeTime shall be zero.
         */
        if (p_src_port == p_dest_port)
                pkt_life = 0;
        else if (p_qos_level && p_qos_level->pkt_life_set)
                pkt_life = p_qos_level->pkt_life;
        else
                pkt_life = sa->p_subn->opt.subnet_timeout;

-- Hal

--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html