Hi Tim,

When making requests for historical data, I pack my requests all in one (let's say 50 requests in the same string, separated by \n) and I send it over to IQFeed.

I then receive the 50 answers, one by one, approximately 0.5 sec apart from each other. So it takes about 20 seconds to receive the 50 answers.

Q: Is such a speed normal?

I find it rather slow compared to what we can receive with the live feed.

Q: Is there any way to speed it up?

Thanks!

Frederic

Hi Frederic,

If you create 15 sockets, then you can do 15 requests at any 1 time which should get you down to just a few seconds.15 is the maximum number of history requests we allow at any 1 time.

Tim

So, I understand the transfer speed I am experiencing is normal, and multiple sockets is the way to go to make it higher. Reducing retrieval time by a factor 15 would be very nice indeed!

I have not managed multiple sockets before, I will look into this asap.

Thank you for the very useful answer!

Frederic

Happy to.

Butm yes that is normal, the requests happen in line, they are not sent in as a batch. So you have a lot of extra transfer latency dragging things down on top of the sequential processing.

Tim

This makes sense.

Have a nice weekend!

Frederic