Anirban Chakraborty [mailto:anirban.chakraborty@xxxxxxxxxx] writes: > >This is the updated patch. Please apply. Performance results from this patch compared to 2.6.30-rc6_scsi-misc. Linux OLTP Performance summary Kernel# Speedup(x) Intr/s CtxSw/s us% sys% idle% iowait% scsi-misc 1.000 29481 43570 74 25 0 0 scsi-misc_qla-irqsave 1.004 29471 43290 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% 2.6.30-rc6_scsi-misc Cycles% 2.6.30-rc6_scsi-misc_qla-irqsave 67.3266 <database> 66.6218 <database> 1.0062 qla24xx_start_scsi 1.0247 qla24xx_start_scsi 0.9246 qla24xx_intr_handler 0.9731 qla24xx_intr_handler 0.8158 __schedule 0.8588 kmem_cache_alloc 0.7469 kmem_cache_alloc 0.8515 __schedule 0.4188 __blockdev_direct_IO 0.4663 __sigsetjmp 0.4097 __sigsetjmp 0.4331 __blockdev_direct_IO 0.3989 scsi_request_fn 0.3852 scsi_request_fn 0.3916 __switch_to 0.3852 task_rq_lock 0.3717 __list_add 0.3612 rb_get_reader_page 0.3499 task_rq_lock 0.3336 __switch_to 0.3408 try_to_wake_up 0.3336 ring_buffer_consume 0.3281 aio_complete 0.3299 copy_user_generic_string 0.3281 rb_get_reader_page 0.3262 __list_add 0.3227 ring_buffer_consume 0.3262 lock_timer_base 0.2901 copy_user_generic_string 0.3225 try_to_wake_up 0.2883 <bash> 0.3059 aio_complete 0.2611 blk_queue_end_tag 0.2783 mod_timer 0.2611 memset_c 0.2488 kmem_cache_free 0.2448 kmem_cache_free 0.2451 blk_queue_end_tag 0.2357 qla2x00_process_completed_re0.2451 tcp_sendmsg 0.2321 lock_timer_base 0.2396 <bash> 0.2321 mod_timer 0.2359 kref_get 0.2230 kfree 0.2359 memset_c 0.2230 tcp_sendmsg 0.2304 qla2x00_process_completed_re 0.2176 generic_make_request 0.2285 memmove 0.2085 scsi_dispatch_cmd 0.2285 mempool_free 0.2085 kref_get 0.2248 generic_make_request 0.2085 sched_clock_cpu 0.2156 sched_clock_cpu 0.2067 scsi_device_unbusy 0.2119 e1000_xmit_frame -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
