cpu comparison
От | M. D. |
---|---|
Тема | cpu comparison |
Дата | |
Msg-id | 4E248E04.2090506@turnkey.bz обсуждение исходный текст |
Ответы |
Re: cpu comparison
("ktm@rice.edu" <ktm@rice.edu>)
Re: cpu comparison (Josh Berkus <josh@agliodbs.com>) Re: cpu comparison (Greg Smith <greg@2ndquadrant.com>) |
Список | pgsql-performance |
I have 2 small servers, one a fairly new server with a x3450 (4-core with HT) cpu running at 2.67GHz and an older E5335 (4-core) cpu running at 2GHz. I have been quite surprised how the E5335 compares very closely to the x3450, but maybe I have tested it wrongly. here's the CPUINFO: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Xeon(R) CPU E5335 @ 2.00GHz stepping : 7 cpu MHz : 1995.036 cache size : 4096 KB physical id : 3 siblings : 1 core id : 0 cpu cores : 1 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu tsc msr pae cx8 apic mtrr cmov pat clflush acpi mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc pni vmx ssse3 cx16 lahf_lm bogomips : 4989.65 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: OS: CentOS 64bit Postgres: 9.0.4 compiled processor : 7 vendor_id : GenuineIntel cpu family : 6 model : 30 model name : Intel(R) Xeon(R) CPU X3450 @ 2.67GHz stepping : 5 cpu MHz : 2660.099 cache size : 8192 KB physical id : 0 siblings : 8 core id : 3 cpu cores : 4 apicid : 7 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : 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 ht tm pbe nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr sse4_1 sse4_2 popcnt lahf_lm [8] bogomips : 5319.92 OS: CentOS 32bit Postgres: 9.0.4 compiled In my testing I have a 32bit CentOS on the x3450, but a 64bit CentOS on the E5335. Can this make such a bit difference or should the perform fairly close to the same speed? Both servers have 8GB of RAM, and the database I tested with is only 3.7GB. I'm a bit surprised as the x3450 has DDR3, while the E5335 has DDR2, and of course because of the cycle speed difference alone I would think the X3450 should beat the E5335.
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