Hi, I do performance tests against orignal JDBC driver and my version in binary and in text mode. I saw strange results when I was reading varchar values. Here is some output from simple benchmark
Plain strings speed Execution: 8316582 , local: 2116608 , all: 10433190 Binary strings speed Execution: 9354613 , local: 2755949 , all: 12110562 Text NG strings speed Execution: 8346902 , local: 2704242 , all: 11051144 Plain is standard JDBC driver, Binary is my version with binary transfer, Text is my version with normal transfer. 1st column, "Execution" is time spend on query execution this includes send, recivie proto message, store it, etc, no conversion to output format. Values are in nanoseconds. In new version I added some functionality, but routines to read parts in "Execution" block are almost same for binary and text. But as you see the binary version is 10-20% slower then orginal, and my text version, if I increase number of read records this proportion will not change. I done many checks, against even "skip proto message content" driver, end results was same 10-20% slower. Regards, Radek. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
