checkcrc anr when the file it too large about mmkv HOT 4 CLOSED

Don't use libz's soft implementation of crc32. Use a tuned implementation of crc32 (such as hardware accelerated) if possible. MMKV has some hardware accelerated crc32 inside. I'm not sure why your App doesn't use it.

By the way, you should provide info needed by following the issue template. Things like language & platform help.

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And 4M is not considered LARGE for MMKV. Generally speaking, MMKV handles files in that size range very well.

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appreciate for your apply and I'm sorry for that, I have edited my issue.

our platform is iOS, there is a commit turn off crc32 optimization for iOS that mmkv have closed crc32 optimization, does it have any problems on iOS?

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It's turned off because back then there were repeated reports from GitHub issues that some device crashed on these crc32 instructions. Theoretically, the libz provided by Apple is already tuned with accelerated hardware.

Exactly how big is your file when this ANR happens?

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