On 28 February 2017 at 11:34, Ashutosh Sharma <ashu.coe...@gmail.com> wrote:
> So, Here are the pgbench results I got with ' > *reduce_pgxact_access_AtEOXact.v2.patch*' on a read-write workload. > Thanks for performing a test. I see a low yet noticeable performance gain across the board on that workload. That is quite surprising to see a gain on that workload. The main workload we have been discussing was the full read-only test (-S). For that case the effect should be much more noticeable based upon Andres' earlier comments. Would it be possible to re-run the test using only the -S workload? Thanks very much. > > *pgbench settings:* > pgbench -i -s 300 postgres > pgbench -M prepared -c $thread -j $thread -T $time_for_reading postgres > > where, time_for_reading = 30mins > > *non default GUC param* > shared_buffers=8GB > max_connections=300 > > pg_wal is located in SSD. > > CLIENT COUNT TPS (HEAD) TPS (PATCH) % IMPROVEMENT > 4 2588 2601 0.5023183926 <(502)%20318-3926> > 8 5094 5098 0.0785237534 > 16 10294 10307 0.1262871576 > 32 19779 19815 0.182011224 > 64 27908 28346 1.569442454 > 72 27823 28416 2.131330194 > 128 28455 28618 0.5728342998 > 180 26739 26879 0.5235797898 > 196 27820 27963 0.5140186916 > 256 28763 28969 0.7161978931 > > Also, Excel sheet (results-readwrite-300-SF.xlsx) containing the results > for all the 3 runs is attached. > -- Simon Riggs http://www.2ndQuadrant.com/ <http://www.2ndquadrant.com/> PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
