From: Saravana Kumar <maheshmcc39@gmail.com>
To: dev@dpdk.org
Subject: [dpdk-dev] Clarification on latency at NIC line rate..
Date: Thu, 3 Mar 2016 11:35:09 -0800 [thread overview]
Message-ID: <CAA=abZ_rnCLGBTWYAT4KdjoNoWD+mS0nF-7Eq_jVYpmcF9GYsQ@mail.gmail.com> (raw)
Hi DPDK community,
I have been experimenting with dpdk eth_tx send on ixgbe pmd (82599 NIC)
I am seeing the following behavior
When i pass 1500 bytes at 9.99GB traffic -- latency looks
fine (25 microseconds)
but when i pass 1500 bytes hitting 10GB traffic(line rate)
-- latency spikes (160 microseconds) and stays forever
once the traffic returns back to 9.99GB traffic latency also
returns back to normal (25 microseconds)
Is this expected behaviour ? Is there any way to reduce the 160
microseconds line rate issue. Thanks Team
Regards,
Saravanan
reply other threads:[~2016-03-03 19:35 UTC|newest]
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