4 ms·
single-digit microseconds tick to trade (i.e. from when a message appears on the wire till a relevant order is sent to the exchange). Without trying too hard,
by veyron 15y ago
single-digit microseconds tick to trade (i.e. from when a message appears on the wire till a relevant order is sent to the exchange).
Without trying too hard, you should be able to get to 100 microsecond tails (CPython and perl prototypes can hit 80 usec at the 90th percentile).
Generally people use 10G nics with some sort of DMA (e.g. solarflare nics support a solution called OnLoad).
Though it should be said that, over the past few months, the effect of a few microseconds is mostly irrelevant (though being slow by milliseconds can be calamitous)
- CamperBob 15y agoThough it should be said that, over the past few months, the effect of a few microseconds is mostly irrelevant (though being slow by milliseconds can be calamitous) How in the heck do these shenanigans add any possible value to the economy?
- Peaker 15y agoThey probably don't add nearly as much value as they make for their players. However, they do add a small value: They close the economic arbitrage "loopholes" -- allowing other players to focus on other things, which are likely to have more economic value. They also may increase trust that the current pricing makes sense. When you buy some stock, it is more likely that you're getting a "fair" transaction.