mailing list archives
Re: Hi speed trading - hi speed monitoring
From: Paul Graydon <paul () paulgraydon co uk>
Date: Thu, 16 Feb 2012 15:08:31 -1000
On 2/16/2012 3:03 AM, Hank Nussbacher wrote:
Anecdotally, I had an interview years ago for a small-ish futures
trading company based in London. The interviewer had to pause the
interview part way through whilst he investigated a 10ms latency spike
that the traders were noticing on a short point-to-point fiber link to
the London Stock Exchange. He commented that the traders were far
better at 'feeling' when an connection was showing even a trace of lag
compared to normal than anything he'd set up by way of monitoring (not
sure how good his monitoring was, though.)
Nanosecond Trading Could Make Markets Go Haywire
"Below the 950-millisecond level, where computerized trading occurs so
quickly that human traders can't even react, no fewer than 18,520
crashes and spikes occurred."
Anyone who has managed a network knows that when you look at your
MRTG/Cacti graphs at 5min, 10min ,15min intervals - all looks well.
Start looking at 1sec intervals and you will see spikes that hit 100%
of capacity - even on networks running at 25% average utilization.
I guess trading and networking do have many unseen similarities.