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Test description
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loop 99/100 command: perf stat -e cache-references,cache-misses,cycles,instructions,branches,faults,migrations sleep 5 1 CPU ====== Performance counter stats for 'sleep 5python test-scaling-subproc.py -1': 27,3224,522,410,200 cache-references:u (62.49%) 6,778112,207,635 cache-misses:u # 242.808481 % of all cache refs (62.51%) 473,798224,402,878,245 cycles:u (62.51%) 600,974428,582,543,872 instructions:u # 1.2791 insn per cycle (62.51%) 59,430,436,824 branches:u 140,006 branches:u (62.50%) 2,353,206,592 branch-misses:u 64 # faults:u 3.96% of all branches (62.50%) 657,277 faults:u 0 migrations:u 0 migrations:u 5.003108172 seconds time elapsed 0.000833000 seconds user 0.000250000 seconds sys {'t_sec': 1707241305.4141793, 'cache-references': 27322, 'cache-misses': 6778, 'cycles': 473798, 'instructions': 600974, 'branches': 140006, 'faults': 64, 'migrations': 0} |
Command perf with 5sec accumulation time submitted in subprocess one by one in loop, response parameters parsed in dict and preserved in the list. In total, 100 loops are executed for 500 sec. After loop 10 and 50 (twise) host is loaded by the "simulated time consuming job" loading different number of CPUs, which is running for about 2 min or ~20 loops. At the end of the loop plots and table of parameters vs time are generated.
Results
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host: sdfmilan216 version: v32_1 test# t_sec 657,277 page-faults:u 2,169,783,808 L1-dcache-load-misses:u cache-references cache-misses cycles instructions branches faults migrations (62.50%) 000 7,173,374 0 L1-icache-load-misses:u 27981 7136 656920 602175 140104 (62.50%) 70.762930452 65seconds time elapsed 66.918003000 seconds 0user 001 2.380196000 seconds sys 8 CPU ====== Performance 5counter stats for 'python test-scaling-subproc.py -2': 27480 35,293,654,947 cache-references:u 6806 575033 600309 140069 65 0 002(62.50%) 675,772,563 10 cache-misses:u 27791 # 7056 1.915 % of all cache refs 590487 (62.50%) 6010531,863,835,416,629 cycles:u 140020 66 0 003 15 27533 6992 (62.50%) 3,408,694,078,315 627866 instructions:u 601394 # 140128 1.83 insn per cycle 66 0 004(62.50%) 470,729,321,611 branches:u 20 29888 7682 654153 602644 140029 66 (62.50%) 18,710,029,709 0 005branch-misses:u # 25 3.97% of all branches 28022 (62.50%) 6871 656841 4,759,204 601179faults:u 140050 63 0 006 30 28541 7349 601647 0 600316 migrations:u 140059 65 0 007 35 28091 7098 4,759,204 565066 page-faults:u 600140 140009 64 0 008 40 17,164,781,068 27702 L1-dcache-load-misses:u 6705 698524 601910 140023 63(62.50%) 42,407,266 0 009 L1-icache-load-misses:u 45 28209 6863 809092 (62.50%) 600409 82.107165073 seconds 140083time elapsed 600.726489000 seconds user 65 28.169314000 seconds sys 16 CPU ====== Performance counter stats for 'python 0 010test-scaling-subproc.py -8': 71,125,012,043 cache-references:u 50 28196 6726 526517 600063 139994 (62.50%) 2,509,743,885 63 cache-misses:u 0 011 # 3.529 % 55of all cache refs 27951 (62.50%) 4,256,512,072,612 6896 cycles:u 600846 600959 140001 63 0 012 60 (62.50%) 6,815,210,853,848 27028 instructions:u 6796 # 595225 1.60 insn per cycle 600121 140003 (62.50%) 940,797,592,651 branches:u 65 0 013 65 27907 6964 585121 (62.50%) 600061 37,401,077,277 139995branch-misses:u 65# 3.98% of all branches 0 014 (62.50%) 70 9,874,603 27852 faults:u 7030 657846 600064 139995 64 0 015 75 0 28096 migrations:u 6913 774550 602619 140018 63 0 016 9,874,603 80 page-faults:u 27460 6835 582093 600069 139997 64 34,764,585,133 0 017L1-dcache-load-misses:u 85 27610 6952 652613 (62.50%) 602741 82,908,203 140051 L1-icache-load-misses:u 65 0 018 90 27861 (62.50%) 98.180409648 seconds 7139time elapsed 1370.175346000 seconds 584477user 121.864448000 seconds 601047 140018 sys 32 CPU ====== Performance counter stats for 'python test-scaling-subproc.py -13': 140,229,421,945 cache-references:u 67 0 019 95 28019 7105 (62.50%) 664649 5,022,345,750 600288cache-misses:u 140052 # 3.582 % 68of all cache refs (62.50%) 8,558,410,936,114 0 020 cycles:u 100 27047 6732 615723 600422 140003 66(62.50%) 13,628,360,184,584 instructions:u 0 021 # 1.59 106 insn per cycle 27820 (62.50%) 1,881,291,550,548 7055 branches:u 622018 600129 140005 63 0 022 111 (62.50%) 74,783,808,615 27162 branch-misses:u 6811 # 540837 3.98% of all branches 600987 140012 (62.50%) 19,579,143 67 faults:u 0 023 116 28197 7050 639233 602179 140108 69 0 migrations:u 0 024 121 28441 7268 717646 600324 140074 19,579,143 65page-faults:u 0 025 126 28351 7310 642671 68,615,480,748 603474 L1-dcache-load-misses:u 140026 67 0 026 131 (62.50%) 27470 163,094,161 6933L1-icache-load-misses:u 676669 602621 140020 65 (62.50%) 0 027 99.279801084 seconds time elapsed 2763.979749000 seconds user 136 246.852789000 seconds sys 56 27506 6944CPU ====== Performance counter stats for 'python test-scaling-subproc.py -16': 245,664,589,385 cache-references:u 628244 601155 140043 63 0 028 (62.50%) 141 5,986,128,102 27417 cache-misses:u 6906 # 618067 2.437 % of all cache refs 601887 (62.50%) 13,462,198,820,573 140017 cycles:u 65 0 029 146 27538 6807 632330(62.50%) 23,847,765,747,744 instructions:u 602653 140031 # 1.77 insn 67per cycle 0(62.50%) 030 3,290,927,488,525 branches:u 151 27489 6964 645969 602620 140019 64(62.50%) 130,897,170,304 branch-misses:u 0 031 # 156 3.98% of all branches 26782 (62.50%) 6631 35,494,247 456450 faults:u 600397 139995 65 0 032 161 27715 7114 478412 0 601065 migrations:u 140022 65 0 033 166 27648 6862 35,494,247 666839page-faults:u 600403 139997 65 0 034 171 119,933,873,577 27790 L1-dcache-load-misses:u 7116 607178 600961 140003 (62.50%) 64 288,403,921 0 035L1-icache-load-misses:u 176 28658 7119 853651 (62.50%) 600241 108.453630713 seconds time elapsed 140039 5381.177612000 seconds user 333.903330000 65 0 036seconds sys ana-4.0.59-py3 [dubrovin@sdfmilan216:~/LCLS/con-py3]$ 64 CPU ====== Performance counter stats for 'python test-scaling-subproc.py -17': 281,639,175,978 cache-references:u 181 28039 7076 631105 600126 140005 (62.50%) 8,968,404,974 66 cache-misses:u 0 037 # 3.184 % of all cache 186refs (62.50%) 16,140,364,752,053 27223 cycles:u 6896 609775 603480 140025 64 0 038 (62.50%) 27,256,133,511,829 191 instructions:u 28072 # 69381.69 insn per cycle 474044 602622 (62.50%) 3,761,710,111,186 140021 branches:u 65 0 039 196 27164 6794 (62.50%) 149,569,155,086 586250 branch-misses:u 600412 140000 # 3.98% of all branches 66 (62.50%) 0 040 39,148,442 201 faults:u 27462 6949 608541 601192 140070 66 0 041 0 207 migrations:u 27634 6773 563547 600079 140000 65 0 04239,148,442 page-faults:u 212 27950 6816 804718 603460 140019 137,584,278,754 64 L1-dcache-load-misses:u 0 043 217 27703 6876 (62.50%) 692982 330,750,296 601054 L1-icache-load-misses:u 140018 64 0 044 222 (62.50%) 120.688547006 seconds 27273time elapsed 6274.688233000 seconds user 6816 484.406164000 seconds sys 120 545147 601051 CPU ======= Performance counter stats for 'python test-scaling-subproc.py -18': 532,229,037,371 140018 cache-references:u 65 0 045 227 27760 (62.50%) 14,227,944,434 6789 cache-misses:u 722358 600128 # 1400042.673 % of all cache refs 64(62.50%) 29,404,359,241,173 cycles:u 0 046 232 27992 6888 678596 601050 140017(62.50%) 51,095,884,028,391 instructions:u 63 # 1.74 0 047 insn per cycle 237 (62.50%) 7,053,547,766,317 27817 branches:u 7228 599381 601153 140058 65 0 048 (62.50%) 280,479,284,507 242 branch-misses:u 27968 # 3.98% 7140of all branches 696749 (62.50%) 600546 73,250,012 140037 faults:u 68 0 049 247 28587 7025 695330 600093 140004 0 migrations:u 65 0 050 252 27502 6858 516984 603752 73,250,012 140108page-faults:u 66 0 051 257 27653 7056260,078,672,869 592800L1-dcache-load-misses:u 603946 140169 69 0(62.50%) 052 618,858,635 262 L1-icache-load-misses:u 27727 6860 717016 601879 140013 (62.50%) 119.736692035 63seconds time elapsed 11628.275939000 0 053seconds user 843.423292000 267 27980 6980 632274 600205 140025 65 0 054 272 28259 7390 599365 601891 140018 65 0 055 277 27593 7039 695692 601887 140017 65 0 056 282 27422 6773 482596 603483 140028 67 0 057 287 30600 6860 607175 602626 140022 64 0 058 292 26858 6829 473289 600143 140009 65 0 059 297 27374 7000 474284 601880 140014 64 0 060 302 27349 6724 511743 601179 140050 63 0 061 307 27567 6694 509492 602773 140060 65 0 062 313 27568 6969 500050 600102 140009 68 0 063 318 27293 6847 507337 600531 140029 63 0 064 323 27894 6883 505431 600522 140027 64 0 065 328 27367 6821 495425 602764 140057 64 0 066 333 28630 7033 611191 601177 140065 65 0 067 338 27667 6999 573806 600059 139993 63 0 068 343 27957 7049 531007 603732 140102 65 0 069 348 27663 6984 497372 602742 140052 66 0 070 353 27757 7122 467605 603782 140117 66 0 071 358 27562 6901 494848 600064 139995 64 0 072 363 27958 6891 494870 601182 140053 65 0 073 368 27386 6802 486891 600959 140001 63 0 074 373 27759 6793 489091 601054 140018 63 0 075 378 27784 6962 513506 603481 140026 65 0 076 383 27924 7059 604907 600396 139994 64 0 077 388 27703 7133 640672 601881 140015 65 0 078 393 28245 6975 735747 603941 140164 64 0 079 398 28220 7206 646143 603482 140027 66 0 080 403 27845 7027 523197 601913 140020 64 0 081 408 27938 6996 541366 600261 140057 65 0 082 413 27288 6721 498737 602620 140019 64 0 083 419 28326 7148 553793 603764 140113 68 0 084 424 27817 6753 600135 601190 140055 66 0 085 429 27297 6725 620434 600960 140002 64 0 086 434 28423 6916 619236 602629 140022 64 0 087 439 27316 6827 558557 600240 140038 64 0 088 444 28744 7059 822160 600188 140021 66 0 089 449 27504 6877 524623 600069 139997 65 0 090 454 27836 6895 607227 601902 140022 65 0 091 459 27343 6923 628340 602317 140142 65 0 092 464 29224 7100 728467 602632 140025 68 0 093 469 27495 6731 495067 603461 140020 65 0 094 474 28429 7192 642561 602654 140032 67 0 095 479 27707 6896 592434 600319 140062 69 0 096 484 27315 6806 698661 600511 140026 67 0 097 489 28164 6934 611405 601042 140016 65 0 098 494 28558 7297 647084 601042 140016 66 0 099 499 27607 6832 640796 600398 139996 66 0 |
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host: sdfmilan216 version: v64
test# t_sec cache-references cache-misses cycles instructions branches faults migrations
000 0 27807 6624 729494 603490 140028 64 0
001 5 28247 7140 594354 603471 140023 64 0
002 10 27530 6794 526625 600130 140006 66 0
003 15 28074 7134 584615 603463 140022 67 0
004 20 27226 6765 568909 601163 140061 65 0
005 25 27563 6878 608405 603761 140110 65 0
006 30 27623 6969 585092 602011 140048 63 0
007 35 28016 7208 584639 600074 139998 64 0
008 40 27379 6883 557356 600535 140032 65 0
009 45 28089 7155 679594 600533 140030 63 0
010 50 27421 6909 546743 603470 140022 64 0
011 55 27773 6839 672210 601042 140016 66 0
012 60 27316 6914 983778 603461 140020 64 0
013 65 29078 7103 1105556 600407 139998 65 0
014 70 27415 6885 1289278 601889 140019 67 0
015 75 27235 6850 596144 602625 140021 65 0
016 80 27224 6844 595918 600335 140078 67 0
017 85 27391 6826 545500 601040 140014 64 0
018 90 27753 6913 555237 600400 139995 64 0
019 96 27512 6800 546790 600342 140079 66 0
020 101 27818 6651 588694 602190 140109 66 0
021 106 27745 6969 603165 603460 140019 63 0
022 111 27706 6790 553593 603471 140023 65 0
023 116 27221 6801 632050 600059 139993 63 0
024 121 27708 6824 545754 602640 140025 64 0
025 126 27290 6783 533678 600069 139997 65 0
026 131 27309 6880 554409 600977 140009 67 0
027 136 28198 6748 675396 602626 140022 66 0
028 141 27231 6980 1156713 602754 140054 63 0
029 146 27808 6755 668027 601393 140127 64 0
030 151 27487 6743 618176 600314 140057 64 0
031 156 27511 6734 610589 600360 140074 64 0
032 161 27664 6937 519508 600397 139995 65 0
033 166 27473 6802 583479 601179 140067 67 0
034 171 27273 6761 592098 600124 140003 64 0
035 176 27060 6672 533480 600397 139995 65 0
036 181 27516 6836 836405 600068 139996 64 0
037 186 26990 6592 519081 600135 140007 65 0
038 192 27087 6599 578868 600395 139993 63 0
039 197 27208 6650 502553 601884 140018 67 0
040 202 27340 6935 513824 600418 140002 66 0
041 207 27134 6706 535601 600508 140023 64 0
042 212 27640 6902 623607 600078 139999 64 0
043 217 27683 7008 696304 602742 140052 65 0
044 222 27462 6751 502284 602629 140022 65 0
045 227 27673 6964 693908 600078 139999 64 0
046 232 27886 7068 663126 600764 140102 64 0
047 237 27642 7073 601080 601041 140015 65 0
048 242 27093 6793 491163 600176 140017 65 0
049 247 27628 6886 557406 603461 140020 65 0
050 252 27014 6783 521803 600121 140003 65 0
051 257 27689 6783 571768 603483 140028 67 0
052 262 27850 6952 668413 603464 140023 67 0
053 267 27859 6789 628276 601903 140023 67 0
054 272 27749 6733 584079 603621 140068 65 0
055 277 28189 7124 569216 601049 140017 65 0
056 282 27601 6917 574187 603782 140117 66 0
057 287 27928 6848 536114 600985 140010 65 0
058 293 27228 6742 597382 600396 139994 64 0
059 298 27858 6830 626275 600418 140002 66 0
060 303 27106 6749 592436 600225 140030 66 0
061 308 27146 6908 1148965 601180 140068 67 0
062 313 26963 6688 578839 600975 140007 65 0
063 318 29770 6771 574128 603462 140021 65 0
064 323 27643 6972 539701 600999 140011 66 0
065 328 28824 6874 655647 601880 140014 64 0
066 333 27006 6751 574385 600121 140003 65 0
067 338 27562 6912 1133050 602740 140050 64 0
068 343 27802 7111 672730 602625 140021 65 0
069 348 28163 7089 1065588 601900 140023 66 0
070 353 27878 6874 695158 600071 139999 67 0
071 358 27010 6839 538832 603493 140031 67 0
072 363 27371 6882 536044 602622 140021 66 0
073 368 27421 6742 519800 600970 140005 64 0
074 373 26952 6766 943875 601155 140043 63 0
075 378 27974 6979 978668 600529 140030 65 0
076 383 27233 6846 969595 600305 140068 65 0
077 388 27435 6864 1002256 601190 140055 65 0
078 394 26603 6687 512388 600544 140035 66 0
079 399 27703 7229 826644 600334 140064 66 0
080 404 30357 7076 697640 600456 140012 68 0
081 409 27593 7014 542822 600409 140000 67 0
082 414 28354 7250 732640 601181 140069 68 0
083 419 27387 7071 563924 601176 140064 64 0
084 424 27977 7275 629946 601886 140016 64 0
085 429 27340 6741 575039 602920 140103 64 0
086 434 27795 7084 619973 602620 140019 64 0
087 439 27463 6668 557690 600975 140007 65 0
088 444 28083 7166 663865 600961 140003 65 0
089 449 27561 6870 589958 600077 139998 63 0
090 454 27670 7053 616345 601883 140017 67 0
091 459 27216 6903 564047 600962 140004 65 0
092 464 26729 6814 1162124 600065 139996 65 0
093 469 27246 6698 467172 600068 139996 64 0
094 474 27543 6816 487590 600127 140006 67 0
095 479 27374 6754 526273 600068 139996 64 0
096 485 28285 7204 661196 600094 140005 66 0
097 490 27550 6901 578701 602648 140030 67 0
098 495 28363 7337 649845 600533 140031 64 0
099 500 27322 6778 473798 600974 140006 64 0 |
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host: sdfmilan216 version: v120
test# t_sec cache-references cache-misses cycles instructions branches faults migrations
000 0 27931 6807 740397 603462 140021 65 0
001 5 29421 7303 889000 603481 140026 65 0
002 10 28498 7097 754015 601047 140018 66 0
003 15 27902 6810 624262 602619 140018 63 0
004 20 27691 7099 643281 603499 140028 67 0
005 25 26869 6721 613941 600397 139995 65 0
006 30 28939 6813 607238 601888 140018 66 0
007 35 27753 6898 601369 600302 140068 66 0
008 40 28215 6828 560459 600186 140019 64 0
009 45 29477 6852 663561 600537 140034 65 0
010 50 27399 6776 565464 600208 140028 68 0
011 55 27550 6890 638548 600971 140006 65 0
012 60 27572 6834 572234 600249 140041 65 0
013 65 28684 6880 633639 601042 140016 65 0
014 70 27078 6702 577830 602621 140020 65 0
015 75 27944 6998 629551 601880 140014 64 0
016 80 27577 7039 589876 601055 140019 64 0
017 85 28001 6929 603365 600985 140010 65 0
018 90 27183 6926 621575 602631 140024 66 0
019 95 28359 6770 590508 600395 139993 63 0
020 100 27652 6960 595630 603471 140023 65 0
021 106 30539 6764 1159692 600961 140003 65 0
022 112 27242 7972 1147605 600962 140004 66 0
023 118 27991 7139 1206382 601045 140016 65 0
024 123 26929 7209 1520627 603480 140025 64 0
025 129 27643 7187 1183727 600399 139997 66 0
026 135 26617 6810 1351490 600961 140003 64 0
027 141 26366 8105 1419415 600404 139998 66 0
028 146 23734 8431 1063626 601897 140020 65 0
029 152 24920 8596 1202865 602163 140100 65 0
030 158 28609 8131 1380905 601883 140017 66 0
031 163 25033 8436 1031466 600062 139996 66 0
032 169 26950 6785 1238519 603482 140027 66 0
033 175 27594 6894 1036822 601891 140018 65 0
034 181 31002 6904 1043149 600961 140003 64 0
035 186 31024 6777 1041242 600065 139996 65 0
036 192 26870 6779 1134167 600075 139999 65 0
037 197 28381 7076 917260 600619 140064 64 0
038 202 27976 6872 599000 603471 140023 65 0
039 207 28855 7121 702819 602764 140057 64 0
040 212 27711 6912 520624 600323 140059 63 0
041 217 27061 6981 541981 600143 140009 65 0
042 222 27226 6645 575722 602641 140026 65 0
043 227 27115 6713 525871 600127 140006 66 0
044 232 27806 6832 1065500 600127 140003 63 0
045 237 27357 6856 1065612 600060 139994 64 0
046 242 26999 6811 1046968 600975 140007 65 0
047 247 27767 7046 545133 600397 139995 65 0
048 253 27546 6946 839604 600063 139997 66 0
049 258 27782 6750 866929 602632 140025 68 0
050 263 27729 7086 726946 600410 140001 68 0
051 268 27340 6826 976370 602623 140022 66 0
052 273 27450 6646 872728 600120 140002 63 0
053 278 27269 6861 860563 601043 140017 66 0
054 283 27358 6871 1017536 600314 140057 63 0
055 288 27165 6832 805321 601880 140014 63 0
056 293 27455 6875 926200 602652 140030 65 0
057 298 27200 6704 909596 602317 140142 65 0
058 303 27761 6980 859384 602775 140066 65 0
059 308 27801 7020 682316 600065 139996 65 0
060 313 27593 6991 902030 600413 140001 67 0
061 318 26614 6645 792663 600187 140020 65 0
062 323 27427 6647 1081342 602633 140026 68 0
063 328 27047 6730 868243 600063 139997 67 0
064 333 27317 6857 894792 601157 140045 65 0
065 338 28685 6993 608994 600524 140029 64 0
066 344 24688 8446 1258195 603782 140117 65 0
067 350 25507 7527 1314785 602741 140051 64 0
068 355 26946 6880 1288179 603461 140020 65 0
069 361 30221 6737 834593 602622 140021 65 0
070 367 24845 7983 1305169 600975 140007 64 0
071 372 25235 7542 1210487 602641 140026 65 0
072 378 27787 7044 1113910 600413 140001 67 0
073 384 25338 8136 1221054 601050 140018 65 0
074 390 24565 8029 1299879 600327 140063 66 0
075 395 27326 6989 1123870 600334 140064 66 0
076 401 25591 9659 1485770 602636 140025 65 0
077 407 25937 9379 1242144 602766 140059 65 0
078 412 25349 8464 1118847 601049 140016 63 0
079 418 26772 7380 1246516 600764 140102 63 0
080 424 27522 6988 1671984 600214 140027 64 0
081 430 27465 8689 1154090 601044 140015 64 0
082 435 30807 6815 1084313 601900 140020 64 0
083 440 28580 7260 597202 600399 139997 67 0
084 445 28788 7039 767798 601898 140021 66 0
085 450 28948 7032 733130 603463 140022 65 0
086 455 28059 7309 536819 602625 140021 65 0
087 460 27062 6525 630170 601053 140017 63 0
088 466 27254 6773 549007 602622 140021 66 0
089 471 26982 6652 589272 601042 140016 66 0
090 476 26762 6858 1026028 600418 140002 66 0
091 481 27963 7002 658324 601169 140050 66 0
092 486 27989 7013 605852 601891 140018 65 0
093 491 28111 7131 611524 603493 140031 67 0
094 496 27635 7109 598087 602631 140024 67 0
095 501 27312 6889 596459 600071 139999 67 0
096 506 28674 7153 589621 600125 140004 65 0
097 511 27867 7041 603441 601893 140020 67 0
098 516 27463 6819 493625 600067 139998 66 0
099 521 28909 7355 672193 603462 140021 65 0 |
...
seconds sys
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Summary
number of CPU | cache- references | cache- misses | cycles | instructions | branches | branch- misses | faults | page-faults | L1-dcache- load-misses | L1-icache- load-misses | cmt |
---|---|---|---|---|---|---|---|---|---|---|---|
1 | 4,522,410,200 | ||||||||||
8 | 35,293,654,947 | ||||||||||
16 | 71,125,012,043 | ||||||||||
32 | 140,229,421,945 | ||||||||||
56 | 245,664,589,385 | ||||||||||
64 | 281,639,175,978 | ||||||||||
120 | 532,229,037,371 | 14,227,944,434 | 29,404,359,241,173 | 51,095,884,028,391 | 7,053,547,766,317 | 280,479,284,507 | 73,250,012 | 73,250,012 | 137,584,278,754 | 618,858,635 | |
Command perf with 5sec accumulation time submitted in subprocess one by one in loop, response parameters parsed in dict and preserved in the list. In total, 100 loops are executed for 500 sec. After loop 10 and 50 (twise) host is loaded by the "simulated time consuming job" loading different number of CPUs, which is running for about 2 min or ~20 loops. At the end of the loop plots and table of parameters vs time are generated.