Dirty pages, faster writing and fsync

Posted Mar 27, 2014 10:45 UTC (Thu) by dgm (subscriber, #49227)
In reply to: Dirty pages, faster writing and fsync by jhhaller
Parent article: PostgreSQL pain points

As with bufferbloat, one approach could be to measure the buffer cache in terms of time it takes to write it back, instead of bytes and megabytes.

As others have suggested, having multiple queues mapped somehow to ionice levels, could be of help too.