On 30 October 2017 at 18:58, Simon Riggs <si...@2ndquadrant.com> wrote: > On 30 October 2017 at 15:22, Simon Riggs <si...@2ndquadrant.com> wrote: > >>> You forgot to update this formula in xlog.c: >>> distance = (2.0 + CheckPointCompletionTarget) * >>> CheckPointDistanceEstimate; >>> /* add 10% for good measure. */ >>> distance *= 1.10; >>> You can guess easily where the mistake is. >> >> Doh - fixed that before posting, so I must have sent the wrong patch. >> >> It's the 10%, right? ;-) > > So, there are 2 locations that mention 2.0 in xlog.c > > I had already fixed one, which is why I remembered editing it. > > The other one you mention has a detailed comment above it explaining > why it should be 2.0 rather than 1.0, so I left it. > > Let me know if you still think it should be removed? I can see the > argument both ways. > > Or maybe we need another patch to account for manual checkpoints.
Revised patch to implement this -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
remove_secondary_checkpoint.v5.patch
Description: Binary data
-- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
