Optimize Option to Error conversion#3036
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To convert option to error we generate an error message. In some places it contains header or block hash code or other data which is costly to produce. So during the initial header sync we spend 12% of all time on generating those messages (in 99% cases we don't use it). This PR introduces a lazy generation of error messages which completely eliminates CPU load during the header sync.
antiochp
approved these changes
Sep 10, 2019
garyyu
reviewed
Sep 10, 2019
| { | ||
| match res { | ||
| Ok(None) => Err(Error::NotFoundErr(field_name.to_owned())), | ||
| Ok(None) => Err(Error::NotFoundErr(field_name())), |
garyyu
approved these changes
Sep 10, 2019
Member
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Nice find! |
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To convert option to error we generate an error message. In some places
it contains header or block hash code or other data which is costly to
produce. So during the initial header sync we spend 12% of all time on
generating those messages (in 99% cases we don't use it). This PR
introduces a lazy generation of error messages which completely
eliminates CPU load during the header sync.
Before:
after:
