User`s manual

LOLA: Low Latency Audio Visual Streaming System
2.7. LOLA v1.3.x backward compatibility
Due to some newly introduced features, this version of LOLA is NOT backward compatible
with all previous versions. If you are upgrading from v1.2.x, keep this older version in a separate
folder, in order to be able to connect with those who do not have yet v1.3.x
2.8. Network Interface Cards (NICs) performances
During various tests we detected that a number of NICs who declare a full 1Gigabit per
second capability are indeed unable to deliver that, or have problems in delivering correctly the
number of Packets per Second (PPS) generated by LOLA (up to 60000). We identified issues with
all the Realtek and Broadcom chipset based NICs. Also some Marvell NICs seem to have the same
issues. We thus strongly suggest to get NICs which are based on Intel chipsets, because all Intel
based NICs we tested perform correctly also with LOLA at high frame rates.
INTEL NICs NOTE: if you encounter some audio or video performance issues at high
video fps (greater than 30), we strongly suggest to modify the “Interrupt Moderation Rate” value
to “Medium”. Generally the default setting is “Adaptive”, but during our tests we discovered that
it's not good for Lola. The same problem occurs if you completely turn off the interrupt moderation
rate.