General Conference on Weights and Measures idaganiza zoyimitsa kuyanjanitsa kwanthawi ndi nthawi kwa mawotchi a atomiki apadziko lonse lapansi ndi nthawi ya zakuthambo ya Earth, osachepera kuyambira 2035. Chifukwa cha kusinthasintha kwa kuzungulira kwa dziko lapansi, mawotchi a zakuthambo ali kumbuyo pang'ono kwa omwe akutchulidwa, ndi kugwirizanitsa nthawi yeniyeni, kuyambira 1972, mawotchi a atomiki aimitsidwa kwa sekondi imodzi zaka zingapo zilizonse, kusiyana komwe kulipo pakati pa zolemba ndi zakuthambo. nthawi idafika masekondi 0.9 (kusintha komaliza kunali zaka 8 mmbuyo). Kuyambira 2035, kulunzanitsa kudzatha ndipo kusiyana pakati pa Coordinated Universal Time (UTC) ndi nthawi ya zakuthambo (UT1, kutanthauza nthawi ya dzuwa) kudzachuluka.
Nkhani yothetsa kuwonjezeredwa kwa sekondi yowonjezera yakhala ikukambidwa ku International Bureau of Weights and Measures kuyambira 2005, koma chigamulochi chachedwa nthawi zonse. M'kupita kwa nthawi, kuzungulira kwa dziko lapansi kumachepa pang'onopang'ono chifukwa cha mphamvu yokoka ya Mwezi ndipo nthawi zapakati pa ma synchronizations zimachepa pakapita nthawi, mwachitsanzo, ngati mphamvuzo zikanasungidwa pambuyo pa zaka 2000, sekondi yatsopano iyenera kukhala. anawonjezera mwezi uliwonse. Panthawi imodzimodziyo, zopotoka pazigawo za kuzungulira kwa dziko lapansi ndizosasintha mwachilengedwe ndipo zaka zingapo zapitazi zasintha ndipo funso labuka lofunika kuti musawonjezere, koma kuchotsa sekondi yowonjezera.
Monga m'malo mwa kulunzanitsa kwachiwiri ndi chiwiri, kuthekera kwa kulunzanitsa kumaganiziridwa pamene zosintha zimawunjikana kwa mphindi 1 kapena ola la 1, zomwe zidzafunika kusintha kwa nthawi zaka mazana angapo. Chisankho chomaliza panjira yolumikiziranso chinakonzedwa kuti chichitike 2026 isanafike.
Lingaliro loyimitsa kulumikizana kwachiwiri ndi chiwiri kunali chifukwa cha zolephera zambiri pamakina apulogalamu chifukwa chakuti pakulumikizana, masekondi 61 adawonekera mumphindi imodzi. Mu 2012, kuyanjanitsa kotereku kunadzetsa kulephera kwakukulu pamakina a seva omwe adakonzedwa kuti agwirizanitse nthawi yeniyeni pogwiritsa ntchito protocol ya NTP. Chifukwa cholephera kuthana ndi mawonekedwe a sekondi yowonjezera, machitidwe ena adalowa mu malupu ndikuyamba kudya zinthu zosafunikira za CPU. Pamalumikizidwe otsatirawa, omwe adachitika mu 2015, zikuwoneka kuti zomvetsa chisoni zakale zidaganiziridwa, koma mu Linux kernel, pakuyesa koyambirira, cholakwika chinapezeka (chokonzedwa musanayambe kulunzanitsa), zomwe zidapangitsa kuti ena agwire ntchito. zowerengera nthawi sekondi imodzi isanakwane.
Popeza ma seva ambiri a NTP akupitiriza kupereka sekondi yowonjezera monga momwe zilili, popanda kusokoneza nthawi zingapo, kuyanjanitsa kulikonse kwa wotchi yachidziwitso kumawoneka ngati mwadzidzidzi kosayembekezereka, zomwe zingayambitse mavuto osayembekezereka (panthawi yotsiriza). kulunzanitsa, ali ndi nthawi yoti aiwale za vutolo ndikukhazikitsa code , zomwe sizimaganizira zomwe zikukambidwa). Mavuto amabweranso m'machitidwe azachuma ndi mafakitale omwe amafunikira kutsata kolondola kwa nthawi ya ntchito. Ndizofunikira kudziwa kuti zolakwika zokhudzana ndi gawo lachiwiri lowonjezera sizimangochitika panthawi yolumikizana, komanso nthawi zina, mwachitsanzo, cholakwika mu code yosinthira mawonekedwe a sekondi yowonjezera mu GPSD idapangitsa kuti pakhale nthawi yosinthira kwa masabata 2021. Okutobala 1024. Ndizovuta kulingalira zomwe zolakwika zingabwere chifukwa chosawonjezera, koma kuchotsa sekondi.
Chosangalatsa ndichakuti, kuyimitsa kulumikizana kuli ndi vuto lomwe lingakhudze magwiridwe antchito opangidwa kuti akhale ndi mawotchi a UTC ndi UT1 omwewo. Mavuto angabwere mu zakuthambo (mwachitsanzo, poika ma telescopes) ndi makina a satana. Mwachitsanzo, oimira Russia adavotera kuyimitsa kuyimitsidwa mu 2035, omwe adaganiza zosintha kuyimitsidwa kupita ku 2040, popeza kusinthaku kumafuna kukonzanso kwakukulu kwa zomangamanga za GLONASS satellite navigation system. Dongosolo la GLONASS poyambirira lidapangidwa kuti liphatikizepo masekondi angapo, pomwe GPS, BeiDou ndi Galileo amangonyalanyaza.
Source: opennet.ru