Messages in this thread | | | From | "Styner, Douglas W" <> | Date | Mon, 4 May 2009 08:52:21 -0700 | Subject | |
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Summary: Measured the mainline kernel from kernel.org (2.6.30-rc4).
The regression for 2.6.30-rc4 against the baseline, 2.6.24.2 is 2.15% (2.6.30-rc3 regression was 1.91%). Oprofile reports 70.1204% user, 29.874% system.
Linux OLTP Performance summary Kernel# Speedup(x) Intr/s CtxSw/s us% sys% idle% iowait% 2.6.24.2 1.000 22106 43709 75 24 0 0 2.6.30-rc4 0.978 30581 43034 75 25 0 0
Server configurations: Intel Xeon Quad-core 2.0GHz 2 cpus/8 cores/8 threads 64GB memory, 3 qle2462 FC HBA, 450 spindles (30 logical units)
======oprofile CPU_CLK_UNHALTED for top 30 functions Cycles% 2.6.24.2 Cycles% 2.6.30-rc4 74.8578 <database> 67.8732 <database> 1.0500 qla24xx_start_scsi 1.1162 qla24xx_start_scsi 0.8089 schedule 0.9888 qla24xx_intr_handler 0.5864 kmem_cache_alloc 0.8776 __schedule 0.4989 __blockdev_direct_IO 0.7401 kmem_cache_alloc 0.4357 __sigsetjmp 0.4914 read_hpet 0.4152 copy_user_generic_string 0.4792 __sigsetjmp 0.3953 qla24xx_intr_handler 0.4368 __blockdev_direct_IO 0.3850 memcpy 0.3822 task_rq_lock 0.3596 scsi_request_fn 0.3781 __switch_to 0.3188 __switch_to 0.3620 __list_add 0.2889 lock_timer_base 0.3377 rb_get_reader_page 0.2750 memmove 0.3336 copy_user_generic_string 0.2519 task_rq_lock 0.3195 try_to_wake_up 0.2474 aio_complete 0.3114 scsi_request_fn 0.2460 scsi_alloc_sgtable 0.3114 ring_buffer_consume 0.2445 generic_make_request 0.2932 aio_complete 0.2263 qla2x00_process_completed_re0.2730 lock_timer_base 0.2118 blk_queue_end_tag 0.2588 memset_c 0.2085 dio_bio_complete 0.2588 mod_timer 0.2021 e1000_xmit_frame 0.2447 generic_make_request 0.2006 __end_that_request_first 0.2426 qla2x00_process_completed_re 0.1954 generic_file_aio_read 0.2265 tcp_sendmsg 0.1949 kfree 0.2184 memmove 0.1915 tcp_sendmsg 0.2184 kfree 0.1901 try_to_wake_up 0.2103 scsi_device_unbusy 0.1895 kref_get 0.2083 mempool_free 0.1864 __mod_timer 0.1961 blk_queue_end_tag 0.1863 thread_return 0.1941 kmem_cache_free 0.1854 math_state_restore 0.1921 kref_get
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