I wrote: > (BTW, in case you can't tell from the drift of my questions, I've > separated the patch into "add background wal writer" and "add async > commit", and am working on the first half.)
I've committed the first half of that. Something that still needs investigation is what the default wal_writer_delay should be. I left it at 200ms as submitted, but in some crude testing here (just running the regression tests and strace'ing the walwriter) it seemed that I had to crank it down to 10ms before the walwriter was really doing the majority of the wal-flushing work. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings