7.52 second kernel compile

From: Anton Blanchard (anton@samba.org)
Date: Sat Mar 16 2002 - 01:15:35 EST


> Let the kernel compile benchmarks continue!

I think Im addicted. I need help!

In this update we added 8 cpus and rewrote the ppc64 pagetable management
code to do lockless inserts and removals (there is still locking at
the pte level to avoid races).

hardware: 32 way logical partition, 1.1GHz POWER4, 60G RAM

kernel: 2.5.7-pre1 + ppc64 pagetable rework

kernel compiled: 2.4.18 x86 with Martin's config

compiler: gcc 2.95.3 x86 cross compiler

make[1]: Leaving directory `/home/anton/intel_kernel/linux/arch/i386/boot'
128.89user 40.23system 0:07.52elapsed 2246%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (437084major+572835minor)pagefaults 0swaps

7.52 seconds is not a bad result for something running under a hypervisor.
The profile looks much better now. We still spend a lot of time flushing tlb
entries but we can look into batching them.

Anton

--
anton@samba.org
anton@au.ibm.com

155912 total 0.0550 114562 .cpu_idle

12615 .local_flush_tlb_range 8476 .local_flush_tlb_page 2576 .insert_hpte_into_group

1980 .do_anonymous_page 1813 .lru_cache_add 1390 .d_lookup 1320 .__copy_tofrom_user 1140 .save_remaining_regs 612 .rmqueue 517 .atomic_dec_and_lock 492 .do_page_fault 444 .copy_page 438 .__free_pages_ok 375 .set_page_dirty 350 .zap_page_range 314 .schedule 270 .__find_get_page 245 .page_cache_release 233 .lru_cache_del 231 .hvc_poll 215 .sys_brk - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/



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