Production processing got stalled on 13% -15%

I have a project that is in reconstruction processing. Every time I try, it gets stuck  at 13-15% for a long time over 10 hours. The size of the task log will increase quickly from tens of KB to hundreds of MB in one minite. The log is too big to upload. We also check the syslog and the storage access information using procmon, but there is no useful information. I have no idea how to check this problem next. Could you give me some guides of this problem? Thank you very much.