182a85f8a1
Sysbench thinks SD_BALANCE_WAKE is too agressive and kbuild doesn't really mind too much, SD_BALANCE_NEWIDLE picks up most of the slack. On a dual socket, quad core, dual thread nehalem system: sysbench (--num_threads=16): SD_BALANCE_WAKE-: 13982 tx/s SD_BALANCE_WAKE+: 15688 tx/s kbuild (-j16): SD_BALANCE_WAKE-: 47.648295846 seconds time elapsed ( +- 0.312% ) SD_BALANCE_WAKE+: 47.608607360 seconds time elapsed ( +- 0.026% ) (same within noise) Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
#ifndef _ASM_MACH_TOPOLOGY_H
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#define _ASM_MACH_TOPOLOGY_H 1
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#include <asm/sn/hub.h>
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#include <asm/sn/types.h>
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#include <asm/mmzone.h>
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struct cpuinfo_ip27 {
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// cpuid_t p_cpuid; /* PROM assigned cpuid */
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cnodeid_t p_nodeid; /* my node ID in compact-id-space */
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nasid_t p_nasid; /* my node ID in numa-as-id-space */
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unsigned char p_slice; /* Physical position on node board */
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#if 0
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unsigned long loops_per_sec;
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unsigned long ipi_count;
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unsigned long irq_attempt[NR_IRQS];
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unsigned long smp_local_irq_count;
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unsigned long prof_multiplier;
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unsigned long prof_counter;
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#endif
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};
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extern struct cpuinfo_ip27 sn_cpu_info[NR_CPUS];
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#define cpu_to_node(cpu) (sn_cpu_info[(cpu)].p_nodeid)
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#define parent_node(node) (node)
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#define node_to_cpumask(node) (hub_data(node)->h_cpus)
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#define cpumask_of_node(node) (&hub_data(node)->h_cpus)
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struct pci_bus;
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extern int pcibus_to_node(struct pci_bus *);
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#define pcibus_to_cpumask(bus) (cpu_online_map)
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#define cpumask_of_pcibus(bus) (cpu_online_mask)
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extern unsigned char __node_distances[MAX_COMPACT_NODES][MAX_COMPACT_NODES];
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#define node_distance(from, to) (__node_distances[(from)][(to)])
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/* sched_domains SD_NODE_INIT for SGI IP27 machines */
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#define SD_NODE_INIT (struct sched_domain) { \
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.parent = NULL, \
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.child = NULL, \
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.groups = NULL, \
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.min_interval = 8, \
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.max_interval = 32, \
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.busy_factor = 32, \
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.imbalance_pct = 125, \
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.cache_nice_tries = 1, \
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.flags = SD_LOAD_BALANCE \
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| SD_BALANCE_EXEC \
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.last_balance = jiffies, \
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.balance_interval = 1, \
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.nr_balance_failed = 0, \
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}
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#include <asm-generic/topology.h>
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#endif /* _ASM_MACH_TOPOLOGY_H */
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