Linux on System z Current & Future Technology - z/VM - IBM
Linux on System z Current & Future Technology - z/VM - IBM
Linux on System z Current & Future Technology - z/VM - IBM
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<strong>IBM</strong> <str<strong>on</strong>g>Linux</str<strong>on</strong>g> and <strong>Technology</strong> Center<strong>System</strong> z kernel features – Core• QDIO outbound scan algorithm (kernel 2.6.38)– Improve scheduling of QDIO tasklets, OSA / HiperSockets / zfcp need differentthresholds• Enabling spinning mutex (kernel 2.6.38)– Make use of the comm<strong>on</strong> code for adaptive mutexes.– Add a new architecture primitive arch_mutex_cpu_relax to exploit sigp senserunning to avoid the mutex lock retries if the hypervisor has not scheduled thecpu holding the mutex.11.211.213© 2012 <strong>IBM</strong> Corporati<strong>on</strong>
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