adverb, noun which may take the genitive case particle 'no'
Kansai dialect form of これだけ. Used to indicate degree or quantity, often with a sense of surprise or emphasis.
See also: これだけ
こんだけ待ったのに、まだ来ない。
I've waited this much and they still haven't come.
こんだけの量を一人で食べるんか?
You're going to eat this much by yourself?