gem5/tests/quick/se/00.hello/ref/x86/linux/simple-timing-ruby/ruby.stats

314 lines
15 KiB
Text

================ Begin RubySystem Configuration Print ================
RubySystem config:
random_seed: 1234
randomization: 0
cycle_period: 1
block_size_bytes: 64
block_size_bits: 6
memory_size_bytes: 134217728
memory_size_bits: 27
Network Configuration
---------------------
network: SIMPLE_NETWORK
topology:
virtual_net_0: active, ordered
virtual_net_1: active, ordered
virtual_net_2: active, ordered
virtual_net_3: active, ordered
virtual_net_4: active, ordered
virtual_net_5: inactive
virtual_net_6: inactive
virtual_net_7: inactive
virtual_net_8: inactive
virtual_net_9: inactive
Profiler Configuration
----------------------
periodic_stats_period: 1000000
================ End RubySystem Configuration Print ================
Real time: Jun/04/2012 15:04:30
Profiler Stats
--------------
Elapsed_time_in_seconds: 0
Elapsed_time_in_minutes: 0
Elapsed_time_in_hours: 0
Elapsed_time_in_days: 0
Virtual_time_in_seconds: 0.36
Virtual_time_in_minutes: 0.006
Virtual_time_in_hours: 0.0001
Virtual_time_in_days: 4.16667e-06
Ruby_current_time: 276484
Ruby_start_time: 0
Ruby_cycles: 276484
mbytes_resident: 52.9648
mbytes_total: 228.941
resident_ratio: 0.232473
ruby_cycles_executed: [ 276485 ]
Busy Controller Counts:
L1Cache-0:0
Directory-0:0
Busy Bank Count:0
sequencer_requests_outstanding: [binsize: 1 max: 1 count: 8901 average: 1 | standard deviation: 0 | 0 8901 ]
All Non-Zero Cycle Demand Cache Accesses
----------------------------------------
miss_latency: [binsize: 2 max: 371 count: 8900 average: 30.0656 | standard deviation: 63.8436 | 0 7523 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 9 4 1 3 2 328 243 178 299 187 7 4 1 3 0 8 6 4 9 5 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 6 11 19 16 9 0 1 0 1 1 0 1 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 ]
miss_latency_LD: [binsize: 2 max: 293 count: 1048 average: 86.792 | standard deviation: 89.333 | 0 549 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 5 1 1 1 1 103 47 87 151 61 1 0 0 1 0 0 1 0 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 3 1 14 8 2 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ]
miss_latency_ST: [binsize: 2 max: 371 count: 934 average: 50.6017 | standard deviation: 78.9939 | 0 680 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 0 1 1 66 71 34 32 24 1 1 1 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 8 2 0 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ]
miss_latency_IFETCH: [binsize: 2 max: 369 count: 6910 average: 18.6938 | standard deviation: 50.1996 | 0 6287 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 2 2 0 1 0 158 125 57 116 102 5 3 0 2 0 8 5 3 4 4 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 2 2 3 8 6 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ]
miss_latency_RMW_Read: [binsize: 1 max: 169 count: 8 average: 23.75 | standard deviation: 58.6905 | 0 0 0 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ]
miss_latency_L1Cache: [binsize: 1 max: 3 count: 7523 average: 3 | standard deviation: 0 | 0 0 0 7523 ]
miss_latency_Directory: [binsize: 2 max: 371 count: 1377 average: 177.934 | standard deviation: 21.7881 | 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 9 4 1 3 2 328 243 178 299 187 7 4 1 3 0 8 6 4 9 5 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 6 11 19 16 9 0 1 0 1 1 0 1 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 ]
miss_latency_wCC_issue_to_initial_request: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
miss_latency_wCC_initial_forward_request: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
miss_latency_wCC_forward_to_first_response: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
miss_latency_wCC_first_response_to_completion: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
imcomplete_wCC_Times: 0
miss_latency_dir_issue_to_initial_request: [binsize: 1 max: 0 count: 1 average: 0 | standard deviation: 0 | 1 ]
miss_latency_dir_initial_forward_request: [binsize: 1 max: 0 count: 1 average: 0 | standard deviation: 0 | 1 ]
miss_latency_dir_forward_to_first_response: [binsize: 1 max: 0 count: 1 average: 0 | standard deviation: 0 | 1 ]
miss_latency_dir_first_response_to_completion: [binsize: 1 max: 159 count: 1 average: 159 | standard deviation: 0 | 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ]
imcomplete_dir_Times: 1376
miss_latency_LD_L1Cache: [binsize: 1 max: 3 count: 549 average: 3 | standard deviation: 0 | 0 0 0 549 ]
miss_latency_LD_Directory: [binsize: 2 max: 293 count: 499 average: 178.98 | standard deviation: 22.8519 | 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 5 1 1 1 1 103 47 87 151 61 1 0 0 1 0 0 1 0 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 3 1 14 8 2 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ]
miss_latency_ST_L1Cache: [binsize: 1 max: 3 count: 680 average: 3 | standard deviation: 0 | 0 0 0 680 ]
miss_latency_ST_Directory: [binsize: 2 max: 371 count: 254 average: 178.039 | standard deviation: 24.8377 | 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 0 1 1 66 71 34 32 24 1 1 1 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 8 2 0 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ]
miss_latency_IFETCH_L1Cache: [binsize: 1 max: 3 count: 6287 average: 3 | standard deviation: 0 | 0 0 0 6287 ]
miss_latency_IFETCH_Directory: [binsize: 2 max: 369 count: 623 average: 177.067 | standard deviation: 19.4782 | 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 2 2 0 1 0 158 125 57 116 102 5 3 0 2 0 8 5 3 4 4 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 2 2 3 8 6 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ]
miss_latency_RMW_Read_L1Cache: [binsize: 1 max: 3 count: 7 average: 3 | standard deviation: 0 | 0 0 0 7 ]
miss_latency_RMW_Read_Directory: [binsize: 1 max: 169 count: 1 average: 169 | standard deviation: 0 | 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ]
All Non-Zero Cycle SW Prefetch Requests
------------------------------------
prefetch_latency: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
prefetch_latency_L2Miss:[binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
Request vs. RubySystem State Profile
--------------------------------
filter_action: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
Message Delayed Cycles
----------------------
Total_delay_cycles: [binsize: 1 max: 0 count: 2750 average: 0 | standard deviation: 0 | 2750 ]
Total_nonPF_delay_cycles: [binsize: 1 max: 0 count: 2750 average: 0 | standard deviation: 0 | 2750 ]
virtual_network_0_delay_cycles: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
virtual_network_1_delay_cycles: [binsize: 1 max: 0 count: 1377 average: 0 | standard deviation: 0 | 1377 ]
virtual_network_2_delay_cycles: [binsize: 1 max: 0 count: 1373 average: 0 | standard deviation: 0 | 1373 ]
virtual_network_3_delay_cycles: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
virtual_network_4_delay_cycles: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
virtual_network_5_delay_cycles: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
virtual_network_6_delay_cycles: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
virtual_network_7_delay_cycles: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
virtual_network_8_delay_cycles: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
virtual_network_9_delay_cycles: [binsize: 1 max: 0 count: 0 average: NaN |standard deviation: NaN | 0 ]
Resource Usage
--------------
page_size: 4096
user_time: 0
system_time: 0
page_reclaims: 14034
page_faults: 0
swaps: 0
block_inputs: 0
block_outputs: 96
Network Stats
-------------
total_msg_count_Control: 4131 33048
total_msg_count_Data: 4119 296568
total_msg_count_Response_Data: 4131 297432
total_msg_count_Writeback_Control: 4119 32952
total_msgs: 16500 total_bytes: 660000
switch_0_inlinks: 2
switch_0_outlinks: 2
links_utilized_percent_switch_0: 2.48658
links_utilized_percent_switch_0_link_0: 2.48947 bw: 16000 base_latency: 1
links_utilized_percent_switch_0_link_1: 2.48369 bw: 16000 base_latency: 1
outgoing_messages_switch_0_link_0_Response_Data: 1377 99144 [ 0 0 0 0 1377 0 0 0 0 0 ] base_latency: 1
outgoing_messages_switch_0_link_0_Writeback_Control: 1373 10984 [ 0 0 0 1373 0 0 0 0 0 0 ] base_latency: 1
outgoing_messages_switch_0_link_1_Control: 1377 11016 [ 0 0 1377 0 0 0 0 0 0 0 ] base_latency: 1
outgoing_messages_switch_0_link_1_Data: 1373 98856 [ 0 0 1373 0 0 0 0 0 0 0 ] base_latency: 1
switch_1_inlinks: 2
switch_1_outlinks: 2
links_utilized_percent_switch_1: 2.48658
links_utilized_percent_switch_1_link_0: 2.48369 bw: 16000 base_latency: 1
links_utilized_percent_switch_1_link_1: 2.48947 bw: 16000 base_latency: 1
outgoing_messages_switch_1_link_0_Control: 1377 11016 [ 0 0 1377 0 0 0 0 0 0 0 ] base_latency: 1
outgoing_messages_switch_1_link_0_Data: 1373 98856 [ 0 0 1373 0 0 0 0 0 0 0 ] base_latency: 1
outgoing_messages_switch_1_link_1_Response_Data: 1377 99144 [ 0 0 0 0 1377 0 0 0 0 0 ] base_latency: 1
outgoing_messages_switch_1_link_1_Writeback_Control: 1373 10984 [ 0 0 0 1373 0 0 0 0 0 0 ] base_latency: 1
switch_2_inlinks: 2
switch_2_outlinks: 2
links_utilized_percent_switch_2: 2.48658
links_utilized_percent_switch_2_link_0: 2.48947 bw: 16000 base_latency: 1
links_utilized_percent_switch_2_link_1: 2.48369 bw: 16000 base_latency: 1
outgoing_messages_switch_2_link_0_Response_Data: 1377 99144 [ 0 0 0 0 1377 0 0 0 0 0 ] base_latency: 1
outgoing_messages_switch_2_link_0_Writeback_Control: 1373 10984 [ 0 0 0 1373 0 0 0 0 0 0 ] base_latency: 1
outgoing_messages_switch_2_link_1_Control: 1377 11016 [ 0 0 1377 0 0 0 0 0 0 0 ] base_latency: 1
outgoing_messages_switch_2_link_1_Data: 1373 98856 [ 0 0 1373 0 0 0 0 0 0 0 ] base_latency: 1
Cache Stats: system.l1_cntrl0.cacheMemory
system.l1_cntrl0.cacheMemory_total_misses: 1377
system.l1_cntrl0.cacheMemory_total_demand_misses: 1377
system.l1_cntrl0.cacheMemory_total_prefetches: 0
system.l1_cntrl0.cacheMemory_total_sw_prefetches: 0
system.l1_cntrl0.cacheMemory_total_hw_prefetches: 0
system.l1_cntrl0.cacheMemory_request_type_LD: 36.2382%
system.l1_cntrl0.cacheMemory_request_type_ST: 18.5185%
system.l1_cntrl0.cacheMemory_request_type_IFETCH: 45.2433%
system.l1_cntrl0.cacheMemory_access_mode_type_Supervisor: 1377 100%
--- L1Cache ---
- Event Counts -
Load [1048 ] 1048
Ifetch [6910 ] 6910
Store [942 ] 942
Data [1377 ] 1377
Fwd_GETX [0 ] 0
Inv [0 ] 0
Replacement [1373 ] 1373
Writeback_Ack [1373 ] 1373
Writeback_Nack [0 ] 0
- Transitions -
I Load [499 ] 499
I Ifetch [623 ] 623
I Store [255 ] 255
I Inv [0 ] 0
I Replacement [0 ] 0
II Writeback_Nack [0 ] 0
M Load [549 ] 549
M Ifetch [6287 ] 6287
M Store [687 ] 687
M Fwd_GETX [0 ] 0
M Inv [0 ] 0
M Replacement [1373 ] 1373
MI Fwd_GETX [0 ] 0
MI Inv [0 ] 0
MI Writeback_Ack [1373 ] 1373
MI Writeback_Nack [0 ] 0
MII Fwd_GETX [0 ] 0
IS Data [1122 ] 1122
IM Data [255 ] 255
Memory controller: system.dir_cntrl0.memBuffer:
memory_total_requests: 2750
memory_reads: 1377
memory_writes: 1373
memory_refreshes: 576
memory_total_request_delays: 3035
memory_delays_per_request: 1.10364
memory_delays_in_input_queue: 743
memory_delays_behind_head_of_bank_queue: 6
memory_delays_stalled_at_head_of_bank_queue: 2286
memory_stalls_for_bank_busy: 791
memory_stalls_for_random_busy: 0
memory_stalls_for_anti_starvation: 0
memory_stalls_for_arbitration: 78
memory_stalls_for_bus: 1373
memory_stalls_for_tfaw: 0
memory_stalls_for_read_write_turnaround: 44
memory_stalls_for_read_read_turnaround: 0
accesses_per_bank: 160 144 210 146 196 96 66 38 22 20 184 297 71 124 60 18 84 6 8 14 92 56 14 60 34 58 84 66 42 122 104 54
--- Directory ---
- Event Counts -
GETX [1377 ] 1377
GETS [0 ] 0
PUTX [1373 ] 1373
PUTX_NotOwner [0 ] 0
DMA_READ [0 ] 0
DMA_WRITE [0 ] 0
Memory_Data [1377 ] 1377
Memory_Ack [1373 ] 1373
- Transitions -
I GETX [1377 ] 1377
I PUTX_NotOwner [0 ] 0
I DMA_READ [0 ] 0
I DMA_WRITE [0 ] 0
M GETX [0 ] 0
M PUTX [1373 ] 1373
M PUTX_NotOwner [0 ] 0
M DMA_READ [0 ] 0
M DMA_WRITE [0 ] 0
M_DRD GETX [0 ] 0
M_DRD PUTX [0 ] 0
M_DWR GETX [0 ] 0
M_DWR PUTX [0 ] 0
M_DWRI GETX [0 ] 0
M_DWRI Memory_Ack [0 ] 0
M_DRDI GETX [0 ] 0
M_DRDI Memory_Ack [0 ] 0
IM GETX [0 ] 0
IM GETS [0 ] 0
IM PUTX [0 ] 0
IM PUTX_NotOwner [0 ] 0
IM DMA_READ [0 ] 0
IM DMA_WRITE [0 ] 0
IM Memory_Data [1377 ] 1377
MI GETX [0 ] 0
MI GETS [0 ] 0
MI PUTX [0 ] 0
MI PUTX_NotOwner [0 ] 0
MI DMA_READ [0 ] 0
MI DMA_WRITE [0 ] 0
MI Memory_Ack [1373 ] 1373
ID GETX [0 ] 0
ID GETS [0 ] 0
ID PUTX [0 ] 0
ID PUTX_NotOwner [0 ] 0
ID DMA_READ [0 ] 0
ID DMA_WRITE [0 ] 0
ID Memory_Data [0 ] 0
ID_W GETX [0 ] 0
ID_W GETS [0 ] 0
ID_W PUTX [0 ] 0
ID_W PUTX_NotOwner [0 ] 0
ID_W DMA_READ [0 ] 0
ID_W DMA_WRITE [0 ] 0
ID_W Memory_Ack [0 ] 0