Following are the pgbench results for read-write workload, I got with pgxact-align-3 patch. The results are for 300 scale factor with 8GB of shared buffer i.e. when data fits into the shared buffer. For 1000 scale factor with 8GB shared buffer the test is still running, once it is completed I will share the results for that as well.
non default GUC param: shared_buffers=8GB max_connections=300
pg_xlog is located in SSD.
Thank you for testing.
It seems that there is still regression. While padding was reduced from 116 bytes to 4 bytes, it makes me think that probably there is something wrong in testing methodology.
Are you doing re-initdb and pgbench -i before each run? I would ask you to do the both.
Also, if regression would still exist, let's change the order of versions. Thus, if you run master before patched version, I would ask you to run patched version before master.
