Hi all, My CPU is AMD Sempron 2800+: http://en.wikipedia.org/wiki/List_of_AMD_Sempron_microprocessors#.22Palermo.22_.28Socket_754.2C_D0.2C_E3_.26_E6.2C_90_nm.29 It sounds a single-core cpu, as I haven't find it at AMD cpu lists which support SMP: http://en.wikipedia.org/wiki/Symmetric_multiprocessing My desktop uses ubuntu8.04, and I find it enable CONFIG_SMP at /boot/config-2.6.24-24-generic. My cpuinfo is: processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 28 model name : AMD Sempron(tm) Processor 2800+ stepping : 0 cpu MHz : 1607.322 cache size : 256 KB 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 syscall nx mmxext fxsr_opt lm 3dnowext 3dnow up lahf_lm ts ttp bogomips : 3216.87 clflush size : 64 ps results: USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.3 2844 1688 ? Ss 12:55 0:01 /sbin/init root 2 0.0 0.0 0 0 ? S< 12:55 0:00 [kthreadd] root 3 0.0 0.0 0 0 ? S< 12:55 0:00 [migration/0] root 4 0.0 0.0 0 0 ? S< 12:55 0:00 [ksoftirqd/0] root 5 0.0 0.0 0 0 ? S< 12:55 0:00 [watchdog/0] root 6 0.0 0.0 0 0 ? S< 12:55 0:00 [events/0] root 7 0.0 0.0 0 0 ? S< 12:55 0:00 [khelper] root 41 0.0 0.0 0 0 ? S< 12:55 0:00 [kblockd/0] root 44 0.0 0.0 0 0 ? S< 12:55 0:00 [kacpid] root 45 0.0 0.0 0 0 ? S< 12:55 0:00 [kacpi_notify] root 150 0.0 0.0 0 0 ? S< 12:55 0:00 [kseriod] root 188 0.0 0.0 0 0 ? S 12:55 0:00 [pdflush] root 189 0.0 0.0 0 0 ? S 12:55 0:00 [pdflush] root 190 0.0 0.0 0 0 ? S< 12:55 0:00 [kswapd0] root 231 0.0 0.0 0 0 ? S< 12:55 0:00 [aio/0] root 1552 0.0 0.0 0 0 ? S< 12:55 0:00 [ksuspend_usbd] root 1558 0.0 0.0 0 0 ? S< 12:55 0:00 [khubd] root 1578 0.0 0.0 0 0 ? S< 12:55 0:01 [ata/0] root 1581 0.0 0.0 0 0 ? S< 12:55 0:00 [ata_aux] root 2318 0.0 0.0 0 0 ? S< 12:55 0:00 [scsi_eh_0] root 2319 0.0 0.0 0 0 ? S< 12:55 0:01 [scsi_eh_1] root 2349 0.0 0.0 0 0 ? S< 12:55 0:00 [scsi_eh_2] root 2351 0.0 0.0 0 0 ? S< 12:55 0:00 [scsi_eh_3] root 2638 0.0 0.0 0 0 ? S< 12:55 0:00 [kjournald] root 2839 0.0 0.1 2412 956 ? S<s 12:55 0:00 /sbin/udevd --daemon root 3320 0.0 0.0 0 0 ? S< 12:56 0:00 [kpsmoused] root 4343 0.0 0.0 0 0 ? S< 12:56 0:00 [kjournald] root 4344 0.0 0.0 0 0 ? S< 12:56 0:00 [kjournald] root 4636 0.0 0.0 1716 512 tty4 Ss+ 12:56 0:00 /sbin/getty 38400 tty4 ...... I have two questions: 1. Does SMP technology can be only used at Dual-core processor, or only Dual-core processor can get benefit from SMP technology? 2. If mine cpu is single-core and I enabled SMP, which will happen? Thank you Peter Chen -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
