I have a new server and some time to do an interesting simple benchmark.
Compile PostgreSQL 7.4.1R by gcc3.2 and Intel CC 8.0 , and use pgbench to evaluate any difference..
Here is the result.
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CPU: Intel(R) Xeon(TM) CPU 3.06GHz (3052.79-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0xf29 Stepping = 9
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX
,FXSR,SSE,SSE2,SS,HTT,TM,PBE> Hyperthreading: 2 logical CPUs real memory = 3221200896 (3071 MB) avail memory = 3130855424 (2985 MB)
FreeBSD 5.1-RELEASE-p11
/usr/local/intel_cc_80/bin/icc -V
Intel(R) C++ Compiler for 32-bit applications, Version 8.0 Build 20031211Z Package ID: l_cc_p_8.0.055_pe057
Copyright (C) 1985-2003 Intel Corporation. All rights reserved.
FOR NON-COMMERCIAL USE ONLY
gcc -v Using built-in specs. Configured with: FreeBSD/i386 system compiler Thread model: posix gcc version 3.2.2 [FreeBSD] 20030205 (release)
Application: PostgreSQL 7.4.1 Benchmark: pgbench
Result : 1. IntelCC ( use ports/database/postgresql7 , default ) ./pgbench -U pgsql -c 30 test starting vacuum...end. transaction type: TPC-B (sort of) scaling factor: 1 number of clients: 30 number of transactions per client: 10 number of transactions actually processed: 300/300 tps = 34.975026 (including connections establishing) tps = 35.550815 (excluding connections establishing)
2. GNU cc( use ports/database/postgresql7 , default ) ./pgbench -U pgsql -c 30 test starting vacuum...end. transaction type: TPC-B (sort of) scaling factor: 1 number of clients: 30 number of transactions per client: 10 number of transactions actually processed: 300/300 tps = 38.968321 (including connections establishing) tps = 39.707451 (excluding connections establishing)
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