Re: [PATCHES] wal_checksum = on (default) | off - Mailing list pgsql-hackers

"Simon Riggs" <simon@2ndquadrant.com> writes:
> COPY        XLogInsert() #1 on oprofile results at 17% CPU
>         (full_page_writes = on)

But what portion of that is actually CRC-related?  XLogInsert does quite
a lot.

Anyway, I can't see degrading the reliability of the system for a gain
in the range of a few percent, which is the most that we'd be likely
to get here ... for a factor of two or more, maybe people would be
willing to take a risk.

            regards, tom lane