Hi, I've searched the archives and the web in general but haven't found an answer.
Problem: I recently started setting up a new machine for use as a standard LAMP server and as a box to investigate XEN virtualisation. When doing some crude performance tests using ab, I found that performance of the machine was not what I would have expected. We have a number of XEON based systems in a different hosting provider. My expectation was that the AMD 6000+ box would perform at least as well as the XEON boxes. Command: ab -k -c 100 -n 50,000 http://localhost/ index.html here was a static text file with either standard debian content or a "hello world" message so size of content is usually less than 20 bytes or so. AMD BOX: about 8,000 requests per second. XEON BOX: about 16,000 requests per second. XEON BOX: 2 gb ram 1 x xeon 3050 @ 2.13ghz (dual core) / is on a mirror of 2 seagate barracuda (it appears. write speed on this box is quite poor...) 32 bit debian etch apache 2.2.3 AMD BOX: 6gb ram 1 x amd x2 6000+ (dual core) / on a mirror of 2 samsung drives. Not sure which ones but bonnie tells me I/O perfomance is superior to XEON box. Various versions of debian were tried and various kernels but all gave similar results lenny 64 bit and 32 bit xen and non xen kernels xen guest os in 32 and 64 bit lenny and etch The hosting provider gives us a black box installation menu that didn't seem to be able to install etch so I can't quite compare apples to apples which is unfortunate. Apache configs. In order to try and level this unlevel playing field I tried a lot of different apache configs on the amd box including using exactly the same one as on herbgarden yet performance remained about the same. What I did notice was that according to vmstat 1, cpu idle count never dropped below 50% on the amd box indicating some issue with multithreading. My question is, should I expect the ab test above on the AMD box to be at least the same as on the XEON box rather than then current poor situation? Any pointers appreciated. John Extra info: AMD BOX: # cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 107 model name : AMD Athlon(tm) 64 X2 Dual Core Processor 6000+ stepping : 2 cpu MHz : 3100.000 cache size : 512 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy 3dnowprefetch bogomips : 6205.46 clflush size : 64 power management: ts fid vid ttp tm stc 100mhzsteps processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 107 model name : AMD Athlon(tm) 64 X2 Dual Core Processor 6000+ stepping : 2 cpu MHz : 3100.000 cache size : 512 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy 3dnowprefetch bogomips : 6205.46 clflush size : 64 power management: ts fid vid ttp tm stc 100mhzsteps free total used free shared buffers cached Mem: 6200668 536780 5663888 0 24740 453800 -/+ buffers/cache: 58240 6142428 Swap: 4200888 0 4200888 hope:~# --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org " from the digest: users-digest-unsubscr...@httpd.apache.org For additional commands, e-mail: users-h...@httpd.apache.org
