Delimiter parser High CPU usage

[goodhoko]

• SerialPort Version: 5.0.0

• NodeJS Version: v6.11.1

• Operating System and Hardware Platform: Windows 10, x64

• Have you checked the right version of the api docs?: yes

• Are you having trouble installing and you checked the Installation Special Cases docs? no

• Are you using Electron and have you checked the Electron Docs?: no

Summary of Problem

When I run this code:

const SerialPort = require('serialport')
const Delimiter = SerialPort.parsers.Delimiter

var port = new SerialPort('COM4')
var parser = port.pipe(new Delimiter({ delimiter: '#'}))

The Node.js process consumes about 30-40% of CPU. When I comment out construction of the parser, usage is around 1%. I first noticed this using serialport in electron, but it's the same in Node.
The device is not sending any data to the port, and the usage doesn't drop even after physically unplugging the cable.

Steps and Code to Reproduce the Issue

Just run the code above.

[reconbot]

I'm willing to bet this is due to the recently closed windows write issue #1221 if you try with the latest 6.0.0 beta you might see an improvement. We'll release 6.0 once that has more testing.

Thanks!

[goodhoko]

I can confirm that after testing with 6.0.0-beta2 the usage dropped to around 0-1%!🎉
When can I expect rolling out 6.0.0 to npm?

[reconbot]

We need more people testing first. It's a big change! A week or two probably.

…

--- Francis Gulotta [email protected]

On Fri, Sep 8, 2017 at 10:40 AM, Jan Koutný ***@***.***> wrote: I can confirm that after testing with 6.0.0-beta2 the usage dropped to around 0-1%!🎉 When can I expect rolling out 6.0.0 to npm? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#1329 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AABlbhoser3Qr1g_JYGaPvxHI2oF_jauks5sgVHOgaJpZM4PPzZ_> .

[goodhoko]

OK. Thanks.
Can I help somehow?

[reconbot]

Keep using it and report any any issues you might have =) I think @dustmop would be happy to know of your success. =)