[ipfs/go-bitswap] provider performance issue

[kingwel-xie]

Currently the bitswap provider is responsible for announcing all content blocks to the DHT network. Also I can see there is a rate limiter which only takes 6 Cid at one time to avoid overwhelming the DHT.

Thus, I'm wondering it might be too slow to announce the content blocks. Assuming there are 1000 blocks, and it would take the provider 1000/6 = 166 rounds to process all blocks. It could be 166 minutes if each DHT providing takes 1 minutes in average.

Furthermore, I don't really get why we have to announce the content blocks? Is that not good enough if only doing for the root block? I notice there is no reprovide mechanism for content blocks, so I tend to believe it doesn't make sense to do providing for them.

Any comments?

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[BigLep]

Next step: @aschmahmann link this to the larger content routing issue and then close this out.

[welcome]

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In the meantime, please double-check that you have provided all the necessary information to make this process easy! Any information that can help save additional round trips is useful! We currently aim to give initial feedback within two business days. If this does not happen, feel free to leave a comment.
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