Stack Overflow Issue

[Keith Bennett]

Hi, Alex and All -

I'm trying to help out a poster on Stack Overflow, at http://stackoverflow.com/questions/36743801/increasing-ruby-resolv-speed.

I've suggested he use dnsruby in a script I wrote for him (at https://gist.github.com/keithrbennett/3cf0be2a1100a46314f662aea9b368ed), and he's getting some errors and 100% CPU utilization when processing 5,000 subdomain prefixes and 1 domain.  We're not sure yet if it's in the dnsruby code, but should there be any problem posting 5,000 asynchronous requests to a queue and then retrieving the responses?  No, right?

- Keith

[Alex Dalitz]

Hi -

As per some of the example code, it’s best to limit the number of concurrent queries.  The idea is to send up to a maximum, and then send more as previous queries complete. This effectively creates a buffer of concurrent queries. 

HTH,

Alex.

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[Keith Bennett]

Alex -

What would you recommend as a practical maximum concurrent request count for a standard Mac or PC?

- Keith

On Friday, April 22, 2016 at 12:50:18 AM UTC+8, Alex Dalitz wrote:

Hi -

As per some of the example code, it’s best to limit the number of concurrent queries.  The idea is to send up to a maximum, and then send more as previous queries complete. This effectively creates a buffer of concurrent queries. 

HTH,

Alex.

On 21 Apr 2016, at 17:09, Keith Bennett <keithr...@gmail.com> wrote:

Hi, Alex and All -

I'm trying to help out a poster on Stack Overflow, at http://stackoverflow.com/questions/36743801/increasing-ruby-resolv-speed.

I've suggested he use dnsruby in a script I wrote for him (at https://gist.github.com/keithrbennett/3cf0be2a1100a46314f662aea9b368ed), and he's getting some errors and 100% CPU utilization when processing 5,000 subdomain prefixes and 1 domain.  We're not sure yet if it's in the dnsruby code, but should there be any problem posting 5,000 asynchronous requests to a queue and then retrieving the responses?  No, right?

- Keith

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[Alex Dalitz]

> What would you recommend as a practical maximum concurrent request count for a standard Mac or PC?

Heh - suck it and see… ;-)