43 points chabad360 1 day ago 18 comments
jauntywundrkind 1 day ago | parent
I wonder if gigabit would make a difference on latency, faster packet transmissions. Could packets drop from 64 to 32b?
4ms is pretty good but I feel like sub 2ms would be nicer.
altairprime 1 day ago | parent
It seems like, at 16000TbaseT anyways, you’re adding an overhead of about 150% on top of copper/fiber latency plus transmit time latency to process data at that bandwidth. I wonder if the same holds true at 100 vs 1000, 2500, 10000? Certainly this is a known tradeoff for DDR performance tuning — if you don’t mind spiking response times greatly, you can get the advertised maximum speeds, else you accept less bandwidth for somewhat less latency — and they’re both effectively using the same strategies to talk over copper.
dcrazy 1 day ago | parent
eqvinox 17 hours ago | parent
"very low latency" in audio is <=1ms. 3.6ms is good but not special.
h3lp 1 hour ago | parent
> The LATMON pulse width is therefore an accurate measure of the total processing latency of each cycle and is affected by every element in the data path: processing delay in the microcontroller, network transmission delay, host OS delays, signal processing delay in the DAW, etc
k_roy 1 hour ago | parent
I would love to know why this is hand-wavy and not very cool? Even as not-audiophile, I’ve got ideas of things to use this for.
> RME HDSPe AIO Pro PCIe
> eth68 matches the latency performance of the RME card at 48 kHz and surpasses it by 0.33 ms at 96 kHz.
Venn1 45 minutes ago | parent
On Linux, we don’t have much in the way of Thunderbolt support for audio interfaces, so the only way to achieve this sort of latency has traditionally been with PCIe or PCI audio interfaces. Having a low-cost, infinitely more portable solution would be very welcome.
k_roy 31 minutes ago | parent
This is just the answer I was looking for. I definitely don’t know anything about the audio space, but am into networking hardcode.
I love seeing audiophile projects that don’t involve a rebranded tp-link switch and marked up 1000%
tern 56 minutes ago | parent
You might be thinking of latency of the converters, which is indeed normally sub-ms.
dasv 49 minutes ago | parent