On Sat, April 24, 2010 01:17, Erik Rijkers wrote: > On Sat, April 24, 2010 00:39, Simon Riggs wrote: >> On Fri, 2010-04-23 at 11:32 -0400, Robert Haas wrote: >>> > >>> > 99% of transactions happen in similar times between primary and standby, >>> > everything dragged down by rare but severe spikes. >>> > >>> > We're looking for something that would delay something that normally >>> > takes <0.1ms into something that takes >100ms, yet does eventually >>> > return. That looks like a severe resource contention issue. >>> >>> Wow. Good detective work. >> >> While we haven't fully established the source of those problems, I am >> now happy that these test results don't present any reason to avoid >> commiting the main patch tested by Erik (not the smaller additional one >> I sent). I expect to commit that on Sunday. >> > > yes, that (main) patch seems to have largely > closed the gap between primary and standby; here > are some results from a lower scale (10):
FWIW, here are some more results from pgbench comparing primary and standby (both with Simon's patch). Sorry if it's too much data, but to me at least it was illuminating; I now understand the effects of the different parameters better. pgbench results, all -S (SELECT-only). scale: 10, 100, 500, 1000 clients: 1, 10, 20, 40, 60, 90 for each: 4x primary, 4x standby, for 15 minutes: (port 6565=primary, 6566=standby) scale: 10 clients: 1 tps = 6404.768132 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 10 clients: 1 tps = 6435.072983 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 10 clients: 1 tps = 6458.958549 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 10 clients: 1 tps = 6432.088099 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 10 clients: 1 tps = 6442.519035 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 10 clients: 1 tps = 6449.837931 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 10 clients: 1 tps = 6419.879026 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 10 clients: 1 tps = 6428.290175 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 --- scale: 10 clients: 10 tps = 27624.339871 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 10 clients: 10 tps = 27604.261750 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 10 clients: 10 tps = 28015.093466 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 10 clients: 10 tps = 28422.561280 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 10 clients: 10 tps = 27254.806526 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 10 clients: 10 tps = 27686.470866 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 10 clients: 10 tps = 28078.904035 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 10 clients: 10 tps = 27101.622337 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 ---- scale: 10 clients: 20 tps = 23106.795587 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 10 clients: 20 tps = 23101.681155 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 10 clients: 20 tps = 22893.364004 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 10 clients: 20 tps = 23038.577109 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 10 clients: 20 tps = 22903.578552 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 10 clients: 20 tps = 22970.691946 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 10 clients: 20 tps = 22999.473318 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 10 clients: 20 tps = 22884.854749 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 ---- scale: 10 clients: 40 tps = 23522.499429 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 10 clients: 40 tps = 23611.319191 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 10 clients: 40 tps = 23616.905302 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 10 clients: 40 tps = 23572.213990 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 10 clients: 40 tps = 23714.721220 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 10 clients: 40 tps = 23711.781175 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 10 clients: 40 tps = 23691.867023 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 10 clients: 40 tps = 23691.699231 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 ---- scale: 10 clients: 60 tps = 21987.497095 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 10 clients: 60 tps = 21950.344204 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 10 clients: 60 tps = 22006.461447 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 10 clients: 60 tps = 21824.071303 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 10 clients: 60 tps = 22149.415231 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 10 clients: 60 tps = 22211.064402 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 10 clients: 60 tps = 22164.238081 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 10 clients: 60 tps = 22174.585736 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 ---- scale: 10 clients: 90 tps = 18751.213002 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 10 clients: 90 tps = 18757.115811 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 10 clients: 90 tps = 18692.942329 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 10 clients: 90 tps = 18765.390154 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 10 clients: 90 tps = 18929.462104 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 10 clients: 90 tps = 18999.851184 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 10 clients: 90 tps = 18972.321607 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 10 clients: 90 tps = 18924.058827 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 ---- scale: 100 clients: 1 tps = 5854.489684 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 100 clients: 1 tps = 5852.679267 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 100 clients: 1 tps = 5844.005437 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 100 clients: 1 tps = 5867.593004 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 100 clients: 1 tps = 1111.368215 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 100 clients: 1 tps = 1187.678163 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 100 clients: 1 tps = 1332.544440 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 100 clients: 1 tps = 1488.574446 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 ---- scale: 100 clients: 10 tps = 28948.718439 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 100 clients: 10 tps = 28865.280357 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 100 clients: 10 tps = 28819.426232 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 100 clients: 10 tps = 28868.070716 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 100 clients: 10 tps = 1839.477133 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 100 clients: 10 tps = 2056.574852 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 100 clients: 10 tps = 2501.715270 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 100 clients: 10 tps = 3114.288871 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 ---- scale: 100 clients: 20 tps = 21561.395664 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 100 clients: 20 tps = 21482.860950 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 100 clients: 20 tps = 21447.896216 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 100 clients: 20 tps = 21450.846824 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 100 clients: 20 tps = 4309.312692 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 100 clients: 20 tps = 6786.460948 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 100 clients: 20 tps = 16552.535443 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 100 clients: 20 tps = 21513.519274 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 ---- scale: 100 clients: 40 tps = 20812.709326 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 100 clients: 40 tps = 20750.911233 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 100 clients: 40 tps = 20764.921432 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 100 clients: 40 tps = 20877.705726 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 100 clients: 40 tps = 20818.028682 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 100 clients: 40 tps = 20876.921640 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 100 clients: 40 tps = 20912.855749 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 100 clients: 40 tps = 20821.271974 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 ---- scale: 100 clients: 60 tps = 18746.870683 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 100 clients: 60 tps = 18752.631011 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 100 clients: 60 tps = 18717.634243 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 100 clients: 60 tps = 18776.138286 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 100 clients: 60 tps = 18850.133061 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 100 clients: 60 tps = 18893.463427 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 100 clients: 60 tps = 18918.599124 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 100 clients: 60 tps = 18903.389147 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 ---- scale: 100 clients: 90 tps = 15915.637099 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 100 clients: 90 tps = 15945.810305 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 100 clients: 90 tps = 15894.238941 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 100 clients: 90 tps = 15926.422587 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 100 clients: 90 tps = 16025.802748 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 100 clients: 90 tps = 16049.977788 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 100 clients: 90 tps = 16053.612396 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 100 clients: 90 tps = 16040.376994 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 ---- scale: 500 clients: 1 tps = 5646.892935 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 500 clients: 1 tps = 5642.544001 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 500 clients: 1 tps = 5633.282536 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 500 clients: 1 tps = 5627.330477 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 500 clients: 1 tps = 5625.659921 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 500 clients: 1 tps = 5645.898120 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 500 clients: 1 tps = 5644.897739 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 500 clients: 1 tps = 5640.990172 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 ---- scale: 500 clients: 10 tps = 28123.467099 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 500 clients: 10 tps = 28230.031309 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 500 clients: 10 tps = 28054.072374 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 500 clients: 10 tps = 28129.229553 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 500 clients: 10 tps = 28187.938585 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 500 clients: 10 tps = 28372.950289 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 500 clients: 10 tps = 28161.909825 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 500 clients: 10 tps = 28224.336096 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 ---- scale: 500 clients: 20 tps = 20932.340860 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 500 clients: 20 tps = 20990.560386 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 500 clients: 20 tps = 20926.001588 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 500 clients: 20 tps = 20903.012936 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 500 clients: 20 tps = 20956.917213 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 500 clients: 20 tps = 21007.634021 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 500 clients: 20 tps = 20982.386759 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 500 clients: 20 tps = 21002.399320 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 ---- scale: 500 clients: 40 tps = 19829.483373 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 500 clients: 40 tps = 19830.187082 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 500 clients: 40 tps = 19757.072979 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 500 clients: 40 tps = 19734.710111 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 500 clients: 40 tps = 19862.051804 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 500 clients: 40 tps = 19834.071543 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 500 clients: 40 tps = 19885.788466 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 500 clients: 40 tps = 19961.407411 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 ---- scale: 500 clients: 60 tps = 17829.256242 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 500 clients: 60 tps = 17816.152137 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 500 clients: 60 tps = 17828.589859 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 500 clients: 60 tps = 17748.044912 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 500 clients: 60 tps = 17926.708964 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 500 clients: 60 tps = 17943.758910 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 500 clients: 60 tps = 17917.713556 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 500 clients: 60 tps = 17932.597396 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 ---- scale: 500 clients: 90 tps = 15044.660043 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 500 clients: 90 tps = 15010.685976 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 500 clients: 90 tps = 15045.828142 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 500 clients: 90 tps = 14976.636159 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 500 clients: 90 tps = 15154.402300 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 500 clients: 90 tps = 15131.532084 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 500 clients: 90 tps = 15154.148091 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 500 clients: 90 tps = 15130.337148 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 ---- scale: 1000 clients: 1 tps = 222.307686 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 1000 clients: 1 tps = 261.163445 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 1000 clients: 1 tps = 307.343862 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 1000 clients: 1 tps = 367.285821 pgbench -p 6565 -n -S -c 1 -T 900 -j 1 scale: 1000 clients: 1 tps = 550.457516 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 1000 clients: 1 tps = 4347.697078 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 1000 clients: 1 tps = 5601.036491 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 scale: 1000 clients: 1 tps = 5604.021799 pgbench -p 6566 -n -S -c 1 -T 900 -j 1 ---- scale: 1000 clients: 10 tps = 3370.534977 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 1000 clients: 10 tps = 23156.038162 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 1000 clients: 10 tps = 28029.755911 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 1000 clients: 10 tps = 28179.609982 pgbench -p 6565 -n -S -c 10 -T 900 -j 1 scale: 1000 clients: 10 tps = 2880.404087 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 1000 clients: 10 tps = 13593.595875 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 1000 clients: 10 tps = 28033.649640 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 scale: 1000 clients: 10 tps = 28115.126500 pgbench -p 6566 -n -S -c 10 -T 900 -j 1 ---- scale: 1000 clients: 20 tps = 4876.882880 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 1000 clients: 20 tps = 21262.273826 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 1000 clients: 20 tps = 20403.533099 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 1000 clients: 20 tps = 20753.634216 pgbench -p 6565 -n -S -c 20 -T 900 -j 1 scale: 1000 clients: 20 tps = 3024.129307 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 1000 clients: 20 tps = 18786.862049 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 1000 clients: 20 tps = 20807.372965 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 scale: 1000 clients: 20 tps = 20896.373925 pgbench -p 6566 -n -S -c 20 -T 900 -j 1 ---- scale: 1000 clients: 40 tps = 5910.319107 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 1000 clients: 40 tps = 19705.088545 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 1000 clients: 40 tps = 19658.237802 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 1000 clients: 40 tps = 19593.955166 pgbench -p 6565 -n -S -c 40 -T 900 -j 1 scale: 1000 clients: 40 tps = 6555.937102 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 1000 clients: 40 tps = 19845.691237 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 1000 clients: 40 tps = 19755.112514 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 scale: 1000 clients: 40 tps = 19765.648969 pgbench -p 6566 -n -S -c 40 -T 900 -j 1 ---- scale: 1000 clients: 60 tps = 7104.451848 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 1000 clients: 60 tps = 17638.393625 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 1000 clients: 60 tps = 17621.464080 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 1000 clients: 60 tps = 17538.189171 pgbench -p 6565 -n -S -c 60 -T 900 -j 1 scale: 1000 clients: 60 tps = 6721.909857 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 1000 clients: 60 tps = 17798.542731 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 1000 clients: 60 tps = 17797.145061 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 scale: 1000 clients: 60 tps = 17739.437864 pgbench -p 6566 -n -S -c 60 -T 900 -j 1 ---- scale: 1000 clients: 90 tps = 6682.605788 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 1000 clients: 90 tps = 14853.076617 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 1000 clients: 90 tps = 14851.040207 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 1000 clients: 90 tps = 14859.575164 pgbench -p 6565 -n -S -c 90 -T 900 -j 1 scale: 1000 clients: 90 tps = 6208.586575 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 1000 clients: 90 tps = 15065.536476 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 1000 clients: 90 tps = 15033.388676 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 scale: 1000 clients: 90 tps = 15030.808207 pgbench -p 6566 -n -S -c 90 -T 900 -j 1 Hardware: 2x Xeon (quadcore) 5482; 32 GB; Areca 1280ML CentOS release 5.4 (Final), x86_64 Linux, 2.6.18-164.el5 Both instances on a raid volume of 12 disks (sata 7200) (and of course, server otherwise idle) hth, Erik Rijkers -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
