Feature #184
Updated by Daniel Curtis over 11 years ago
During routine system maintenance I noticed that one CPU was disabled. The system has been running solid since its deployment, and enabling the second CPU is purely for performance gain. I checked the systems hardware like so: <pre> sudo lshw </pre> > *!-cpu:0 *-cpu:0 > description: CPU > product: 7455, altivec supported > physical id: 2 > bus info: cpu@0 > version: 2.1 (pvr 8001 0201) > size: 999MHz > clock: 133MHz > capabilities: altivec performance-monitor > *!-cache:0 *-cache:0 > description: L1 Cache > physical id: 0 > size: 32KiB > *!-cache:1 *-cache:1 > description: L2 Cache (unified) > physical id: 1 > size: 256KiB > clock: 999MHz (1.0ns) > > *!-cpu:1 *-cpu:1 DISABLED > description: CPU > product: PowerPC,G4 > physical id: 3 > bus info: cpu@1 > version: 8001.2.1 > size: 999MHz > clock: 133MHz > capabilities: altivec performance-monitor > *!-cache:0 *-cache:0 UNCLAIMED > description: L1 Cache > physical id: 0 > size: 32KiB > *!-cache:1 *-cache:1 UNCLAIMED > description: L2 Cache (unified) > physical id: 1 > size: 256KiB > clock: 999MHz (1.0ns) This is where I spotted that the CPU was disabled. I decided to search with apt-cache and locate the SMP (Symmetric MultiProcessing) Linux Image for the PowerPC architecture: <pre> sudo apt-cache search linux-image </pre> From there I installed the proper linux-image-powerpc-smp: <pre> sudo apt-get install linux-image-powerpc-smp linux-image-headers-powerpc-smp </pre> Reboot the server: <pre> sudo reboot </pre> And check to see if the CPU has been enabled: <pre> sudo lshw </pre> > *!-cpu:0 *-cpu:0 > description: CPU > product: 7455, altivec supported > physical id: 2 > bus info: cpu@0 > version: 2.1 (pvr 8001 0201) > size: 999MHz > clock: 133MHz > capabilities: altivec performance-monitor > *!-cache:0 *-cache:0 > description: L1 Cache > physical id: 0 > size: 32KiB > *!-cache:1 *-cache:1 > description: L2 Cache (unified) > physical id: 1 > size: 256KiB > clock: 999MHz (1.0ns) > *!-cpu:1 *-cpu:1 > description: CPU > product: 7455, altivec supported > physical id: 3 > bus info: cpu@1 > version: 2.1 (pvr 8001 0201) > size: 999MHz > clock: 133MHz > capabilities: altivec performance-monitor > *!-cache:0 *-cache:0 > description: L1 Cache > physical id: 0 > size: 32KiB > *!-cache:1 *-cache:1 > description: L2 Cache (unified) > physical id: 1 > size: 256KiB > clock: 999MHz (1.0ns)