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Scanner is very slow running

Toby | Last updated: Jan 22, 2016 01:28PM UTC

Burp Scanner is very slow running why ???

Liam, PortSwigger Agent | Last updated: Jan 22, 2016 01:31PM UTC

Hi Toby Thanks for your message. It could be any number of things causing Burp Scanner to run slowly. It could be the size of the application, the amount of inputs / insertion points or even the amount of cookies on each individual page. It could also be that you are testing a slow application. You can use the Scanner > Options tab to refine your scanning and ensure you are only scanning aspects of the application that are necessary. Please let us know if you need any further assistance.

Burp User | Last updated: Jan 25, 2016 09:08AM UTC

Still too slow, It was even faster than version 1.6.27.. Why ?

Liam, PortSwigger Agent | Last updated: Jan 25, 2016 09:19AM UTC

Hi Toby Is your comparison based on testing the exact same application? Have you installed any extensions? In addition, since version 1.6.27 we have increased the amount of payloads per insertion point in an effort improve the performance of the Scanner. We have also introduced Burp Collaborator. While these additions shouldn't have caused a noticeable increase in scan speed, Burp is doing more work than in older versions.

PortSwigger Agent | Last updated: Feb 04, 2016 01:04PM UTC

We'd be grateful if you could provide more details of this problem, either here or by emailing our support. Do you have any extensions installed? Does this affect every application or only some? Does the problem affect disk-based projects, or temporary projects, or both?

Burp User | Last updated: Sep 15, 2016 09:28PM UTC

I am having the same issue. Scanning an application with burpsuite_pro_v1.6.32, I have excellent performance. Scanning with anything above this version, my scans grind to a halt. Please provide much more detailed guidance on tuning. Thanks in advance!

Burp User | Last updated: Dec 02, 2016 02:53PM UTC

Yeah - I can't pin point what changed but the duration for a request is SUPER SLOW after some of the recent updates. I thought this was a web app specific issue but has happened through many tests of varying systems over the last couple months, impacting disk based and temp projects. It can be really tedious to monitor and re-test. Windows 7 64 bit latest version. 1.6 or so like mentioned above did not do this unless theres been a change in how the requests are counted and displayed?

PortSwigger Agent | Last updated: Dec 05, 2016 09:01AM UTC

If you have an application that Burp can scan reliably with an older version but not with the current version, then please email support@portswigger.net with more details and we'll investigate and do our best to help. Unfortunately, anecdotal reports that today's Burp scan is running slower than a different scan a while ago aren't enough for us to investigate or help out, sorry.

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