onTopicPages < processedPages / 10 in the beginning when seeds (assuming seeds are on topic) are processed, something is wrong.
If you specified
content phrases, then this can go lower, down to
onTopicPages < processedPages / 100.
STOP, DELETE RESULTS, START crawl again.
If above situation repeats, fix your crawl settings.
forbidden atext patternsand
forbidden href patterns.
content phrases. This can make a crawl very inefficient if above steps are not done properly! Especially if you want geolocation targeting, you need to forbid few most common top level domains, countries, and cities (that appear in top of 'Most relevant domains' and 'Keyword ideas' tools) in
forbidden href patterns, and
forbidden atext patternssettings! This simple 'brute force' solution can produce MUCH better crawl results.
Crawl may stop before
onTopicPages is reached if crawl settings is detected to be anomalous (too low percent of detected on-topic pages).
If you find above process too complicated or time consuming, you can have an expert setup your crawl.