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I have question My geth show me like that "Deep froze chain segment" repeatedly

What mean??

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This is related to Geth's Freezer functionality, which "moves ancient chain segments out of the active database into immutable append-only flat files."

The message you're seeing is informational, so it's nothing to worry about.

Geth's freeze() function (in freezer.go), where that message is output, does the following:

"freeze is a background thread that periodically checks the blockchain for any import progress and moves ancient data from the fast database into the freezer."

Freezer was implemented in PR #17814, and is described in detail in the PR.

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