{"id":75939,"date":"2020-03-29T19:42:19","date_gmt":"2020-03-29T17:42:19","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kompaniya-cloudflare-podgotovila-patchi-kardinalno-uskoryayushhie-diskovoe-shifrovanie-v-linux"},"modified":"2020-03-29T19:42:19","modified_gmt":"2020-03-29T17:42:19","slug":"kompaniya-cloudflare-podgotovila-patchi-kardinalno-uskoryayushhie-diskovoe-shifrovanie-v-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/kompaniya-cloudflare-podgotovila-patchi-kardinalno-uskoryayushhie-diskovoe-shifrovanie-v-linux","title":{"rendered":"Kompania Cloudflare p\u00ebrgatiti patches q\u00eb p\u00ebrshpejtojn\u00eb ndjesh\u00ebm enkriptimin e disqeve n\u00eb Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Zhvilluesit e kompanis\u00eb Cloudflare <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.cloudflare.com\/speeding-up-linux-disk-encryption\/\">treguam<\/a><\/noindex> p\u00ebr pun\u00ebn e realizuar n\u00eb optimizimin e performanc\u00ebs s\u00eb enkriptimit t\u00eb disqeve n\u00eb b\u00ebrtham\u00ebn Linux. Si rezultat, u p\u00ebrgatit\u00ebn <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/linux\/tree\/master\/patches\">patches<\/a><\/noindex> p\u00ebr n\u00ebn-sistemin <noindex><a rel=\"nofollow\" href=\"https:\/\/gitlab.com\/cryptsetup\/cryptsetup\/-\/wikis\/DMCrypt\">dm-crypt<\/a><\/noindex> dhe Crypto API, q\u00eb lejuan q\u00eb n\u00eb testin sintetik kapaciteti p\u00ebr lexim dhe shkruajtur u rrit m\u00eb shum\u00eb se dyfish, si dhe vonesat u ul\u00ebn gjithashtu n\u00eb dyfish. Gjat\u00eb testimit n\u00eb pajisje reale, kostot e enkriptimit arrit\u00ebn t\u00eb ulen praktikisht n\u00eb nivelin e v\u00ebrejtur kur punohet me disk pa p\u00ebrdorimin e t\u00eb dh\u00ebnave t\u00eb enkriptuara.<\/p>\n<p>Cloudflare p\u00ebrdor dm-crypt p\u00ebr enkriptimin e t\u00eb dh\u00ebnave n\u00eb pajisjet q\u00eb p\u00ebrdoren p\u00ebr memorizimin e p\u00ebrmbajtjes n\u00eb rrjetin CDN. Dm-crypt funksionon n\u00eb nivelin e pajisjeve bllok dhe kryen enkriptimin e k\u00ebrkesave t\u00eb input\/ output p\u00ebr shkruaj dhe dekriptimin e k\u00ebrkesave p\u00ebr lexim, duke vepruar si nj\u00eb shtres\u00eb midis pajisjes bllok dhe drajverit t\u00eb sistemit t\u00eb skedar\u00ebve. <\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/blog-cloudflare-com-assets.storage.googleapis.com\/2020\/03\/storage-stack.png\"><img decoding=\"async\" alt=\"Kompania Cloudflare p\u00ebrgatiti patches q\u00eb p\u00ebrshpejtojn\u00eb ndjesh\u00ebm enkriptimin e disqeve n\u00eb Linux\" src=\"\/wp-content\/uploads\/2020\/03\/85a5ec907119f64eb19edadfc80011a6.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>P\u00ebr t\u00eb vler\u00ebsuar performanc\u00ebn e dm-crypt me paket\u00ebn <noindex><a rel=\"nofollow\" href=\"https:\/\/fio.readthedocs.io\/en\/latest\/fio_doc.html\">Flexible I\/O tester<\/a><\/noindex> u b\u00eb nj\u00eb matje e shpejt\u00ebsis\u00eb s\u00eb pun\u00ebs me seksionet e enkriptuara dhe ato t\u00eb enkriptuara jo n\u00eb nj\u00eb RAM-disk, i vendosur n\u00eb RAM p\u00ebr t\u00eb p\u00ebrjashtuar fluktuacionet e performanc\u00ebs s\u00eb disqeve dhe p\u00ebr t'u fokusuar n\u00eb performanc\u00ebn e kodit. P\u00ebr seksionet e enkriptuara jo, performanca e leximit dhe shkruajturit u mbajt n\u00eb 1126 MB\/s, por me aktivizimin e enkriptimit, shpejt\u00ebsia u ul <b>7 her\u00eb<\/b> dhe arriti n\u00eb 147 MB\/s. <\/p>\n<p>Fillimisht, u shfaq dyshimi p\u00ebr p\u00ebrdorimin e algoritmeve joefikase n\u00eb sistemin kriptografik t\u00eb b\u00ebrtham\u00ebs. Por n\u00eb teste u p\u00ebrdor algoritmi m\u00eb i shpejt\u00eb aes-xts me 256 \u00e7el\u00ebs enkriptimi, performanca e t\u00eb cilit n\u00eb realizimin e \u00abcryptsetup benchmark\u00bb \u00ebsht\u00eb m\u00eb shum\u00eb se dyfish m\u00eb e lart\u00eb se rezultati i testuar n\u00eb RAM-disk. Eksperimentet me flamujt dm-crypt p\u00ebr tuning t\u00eb performanc\u00ebs nuk dhan\u00eb rezultate: me p\u00ebrdorimin e flamurit \u00ab\u2014perf-same_cpu_crypt\u00bb performanca madje u ul n\u00eb 136 MB\/s, nd\u00ebrsa me flamurin \u00ab\u2014perf-submit_from_crypt_cpus\u00bb arriti vet\u00ebm 166 MB\/s.<\/p>\n<p>Nj\u00eb analiz\u00eb m\u00eb e thell\u00eb e logjik\u00ebs s\u00eb funksionimit tregoi se dm-crypt nuk \u00ebsht\u00eb aq i thjesht\u00eb sa duket \u2014 kur merr nj\u00eb k\u00ebrkes\u00eb p\u00ebr shkrim nga drejtuesi i FS, dm-crypt nuk e p\u00ebrpunon menj\u00ebher\u00eb, por e vendos n\u00eb radh\u00eb \u2018kcryptd\u2019, e cila nuk merret menj\u00ebher\u00eb me t\u00eb, por kur ka nj\u00eb moment t\u00eb p\u00ebrshtatsh\u00ebm. Nga radha, k\u00ebrkesa d\u00ebrgohet n\u00eb Linux Crypto API p\u00ebr t\u00eb kryer enkriptimin. Por pasi Crypto API p\u00ebrdor nj\u00eb model t\u00eb ekzekutimit asinkron, enkriptimi gjithashtu nuk kryhet menj\u00ebher\u00eb, por kalon n\u00eb nj\u00eb radh\u00eb tjet\u00ebr. Pasi t\u00eb p\u00ebrfundoj\u00eb enkriptimi, dm-crypt mund t\u00eb p\u00ebrpiqet t\u00eb kryej\u00eb renditjen e k\u00ebrkesave t\u00eb pritura p\u00ebr shkrim, duke p\u00ebrdorur nj\u00eb pem\u00eb k\u00ebrkimi. <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%9A%D1%80%D0%B0%D1%81%D0%BD%D0%BE-%D1%87%D1%91%D1%80%D0%BD%D0%BE%D0%B5_%D0%B4%D0%B5%D1%80%D0%B5%D0%B2%D0%BE\">red-black<\/a><\/noindex>. N\u00eb fund, nj\u00eb rrjedh\u00eb e ve\u00e7ant\u00eb e b\u00ebrtham\u00ebs, p\u00ebrs\u00ebri me nj\u00eb vones\u00eb t\u00eb caktuar, merr k\u00ebrkesat e mbledhura t\u00eb hyrjes\/daljes dhe i d\u00ebrgon ato n\u00eb shkakun e pajisjes bllokuese.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/blog-cloudflare-com-assets.storage.googleapis.com\/2020\/03\/dm-crypt.png\"><img decoding=\"async\" alt=\"Kompania Cloudflare p\u00ebrgatiti patches q\u00eb p\u00ebrshpejtojn\u00eb ndjesh\u00ebm enkriptimin e disqeve n\u00eb Linux\" src=\"\/wp-content\/uploads\/2020\/03\/2b64e1e781d01d3735c9ba81411ec026.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Kur lexon, fillimisht dm-crypt shton n\u00eb radh\u00eb \u2018kcryptd_io\u2019 nj\u00eb k\u00ebrkes\u00eb p\u00ebr t\u00eb marr\u00eb t\u00eb dh\u00ebnat nga vler\u00ebsimi. Pas nj\u00eb kohe, t\u00eb dh\u00ebnat b\u00ebhen t\u00eb disponueshme dhe vendosen n\u00eb radh\u00eb \u2018kcrypt\u2019 p\u00ebr dekryptim.<br \/>\nKcryptd d\u00ebrgon k\u00ebrkes\u00ebn n\u00eb Linux Crypto API, i cili dekrypton informacionin n\u00eb nj\u00eb m\u00ebnyr\u00eb asinkrone. K\u00ebrkesat nuk kalojn\u00eb gjithmon\u00eb n\u00eb t\u00eb gjitha radh\u00ebt, por n\u00eb skenarin m\u00eb t\u00eb keq, nj\u00eb k\u00ebrkes\u00eb p\u00ebr shkrim mund t\u00eb mbetet n\u00eb radh\u00eb deri n\u00eb 4 her\u00eb, nd\u00ebrsa nj\u00eb k\u00ebrkes\u00eb p\u00ebr lexim deri n\u00eb 3 her\u00eb. \u00c7do her\u00eb q\u00eb kalon n\u00eb radh\u00eb, ndodhin vonesa, q\u00eb jan\u00eb shkaku kryesor i uljes s\u00eb konsiderueshme t\u00eb performanc\u00ebs s\u00eb dm-crypt. <\/p>\n<p>P\u00ebrdorimi i radh\u00ebve \u00ebsht\u00eb i justifikuar nga nevoja p\u00ebr t\u00eb punuar n\u00eb kushte t\u00eb nd\u00ebrprerjeve. N\u00eb vitin 2005, kur u realizua modelin aktual t\u00eb pun\u00ebs dm-crypt mbi baz\u00ebn e radh\u00ebve, Crypto API ende nuk ishte asinkron. Pas kalimit t\u00eb Crypto API n\u00eb nj\u00eb model ekzekutimi asinkron, u aplikua n\u00eb esenc\u00eb nj\u00eb mbrojtje e dyfisht\u00eb. Radh\u00ebt gjithashtu u fut\u00ebn p\u00ebr t\u00eb kursyer konsumimin e stek\u00ebs s\u00eb b\u00ebrtham\u00ebs, por p\u00ebrshtatjet e tilla humb\u00ebn r\u00ebnd\u00ebsin\u00eb pas rritjes s\u00eb tij n\u00eb vitin 2014. Nj\u00eb radh\u00eb shtes\u00eb 'kcryptd_io' u fut p\u00ebr t\u00eb tejkaluar ngushtic\u00ebn q\u00eb \u00e7onte n\u00eb pritjen p\u00ebr alokimin e memories kur kishte nj\u00eb num\u00ebr t\u00eb madh k\u00ebrkesash. N\u00eb vitin 2015, gjithashtu u fut nj\u00eb faz\u00eb renditjeje, pasi k\u00ebrkesat p\u00ebr enkriptim n\u00eb sistemet shum\u00ebprocesor mund t\u00eb p\u00ebrfundonin pa respektuar rendin e d\u00ebrgimit (n\u00eb vend t\u00eb qasjes radhazi n\u00eb disk, ndodhi qasje e rastit, dhe gjithashtu planifikuesi CFQ nuk punonte n\u00eb m\u00ebnyr\u00eb efikase). Aktualisht, me p\u00ebrdorimin e magazinave SSD, renditja ka humbur kuptimin, dhe planifikuesi CFQ nuk p\u00ebrdoret m\u00eb n\u00eb b\u00ebrtham\u00eb.<\/p>\n<p>Duke marr\u00eb parasysh se magazinat moderne kan\u00eb become m\u00eb t\u00eb shpejta dhe m\u00eb t\u00eb zgjuara, sistemi i shp\u00ebrndarjes s\u00eb burimeve n\u00eb b\u00ebrtham\u00ebn Linux \u00ebsht\u00eb rishikuar dhe disa n\u00ebn-sisteme jan\u00eb ripunuar, inxhinier\u00ebt e Cloudflare <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/linux\/blob\/master\/patches\/0023-Add-DM_CRYPT_FORCE_INLINE-flag-to-dm-crypt-target.patch\">shtuan<\/a><\/noindex> n\u00eb dm-crypt nj\u00eb mod i ri operimi, i \u00e7liruar nga p\u00ebrdorimi i radh\u00ebve t\u00eb tep\u00ebrt dhe thirrjeve asinkrone. Ky mod aktivizohet me nj\u00eb flamur t\u00eb ve\u00e7ant\u00eb 'force_inline' dhe e \u00e7on dm-crypt n\u00eb form\u00ebn e nj\u00eb proxy t\u00eb thjesht\u00eb, q\u00eb enkripton dhe dekripton k\u00ebrkesat q\u00eb mb\u00ebrrijn\u00eb. Bashk\u00ebpunimi me Crypto API \u00ebsht\u00eb optimizuar p\u00ebrmes zgjedhjes s\u00eb qart\u00eb t\u00eb algoritmeve t\u00eb enkriptimit, t\u00eb cilat funksionojn\u00eb n\u00eb modin sinkron dhe nuk p\u00ebrdorin radh\u00ebt e k\u00ebrkesave. P\u00ebr funksionimin sinkron me Crypto API \u00ebsht\u00eb <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cloudflare\/linux\/blob\/master\/patches\/0024-Add-xtsproxy-Crypto-API-module.patch\">suggested<\/a><\/noindex> nj\u00eb modul, q\u00eb lejon p\u00ebrdorimin e FPU\/AES-NI p\u00ebr p\u00ebrshpejtim dhe kalon drejtp\u00ebrdrejt k\u00ebrkesat e enkriptimit dhe dekriptimit.<\/p>\n<p>Si rezultat, gjat\u00eb testimit t\u00eb RAM-diskut u arrit q\u00eb performanca e dm-crypt t\u00eb ngjitet m\u00eb shum\u00eb se dy her\u00eb \u2014 performanca u rrit nga 294 MB\/s (2 x 147 MB\/s) deri n\u00eb 640 MB\/s, e cila \u00ebsht\u00eb shum\u00eb af\u00ebr performanc\u00ebs s\u00eb enkriptimit t\u00eb past\u00ebr (696 MB\/s).<br \/>\n<center><noindex><a rel=\"nofollow\" href=\"https:\/\/blog-cloudflare-com-assets.storage.googleapis.com\/2020\/03\/read-throughput-annotated.png\"><img decoding=\"async\" alt=\"Kompania Cloudflare p\u00ebrgatiti patches q\u00eb p\u00ebrshpejtojn\u00eb ndjesh\u00ebm enkriptimin e disqeve n\u00eb Linux\" src=\"\/wp-content\/uploads\/2020\/03\/d7f7edcc0251f0fbc0fd3095cce8f8a0.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><br \/>\n<center><noindex><a rel=\"nofollow\" href=\"https:\/\/blog-cloudflare-com-assets.storage.googleapis.com\/2020\/03\/write-throughput-annotated.png\"><img decoding=\"async\" alt=\"Kompania Cloudflare p\u00ebrgatiti patches q\u00eb p\u00ebrshpejtojn\u00eb ndjesh\u00ebm enkriptimin e disqeve n\u00eb Linux\" src=\"\/wp-content\/uploads\/2020\/03\/2c9fd0549da22ee1987a166604f69c0b.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><br \/>\n<center><noindex><a rel=\"nofollow\" href=\"https:\/\/blog-cloudflare-com-assets.storage.googleapis.com\/2020\/03\/await-annotated.png\"><img decoding=\"async\" alt=\"Kompania Cloudflare p\u00ebrgatiti patches q\u00eb p\u00ebrshpejtojn\u00eb ndjesh\u00ebm enkriptimin e disqeve n\u00eb Linux\" src=\"\/wp-content\/uploads\/2020\/03\/a0c9d02ef10ad90b2deaeddde0e2434b.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Gjat\u00eb testimit t\u00eb ngarkes\u00ebs n\u00eb serverat real\u00eb, implementimi i ri tregoi nj\u00eb performanc\u00eb shum\u00eb t\u00eb af\u00ebrt me konfigurimin q\u00eb punon pa enkriptim, nd\u00ebrsa aktivizimi i enkriptimit n\u00eb serverat me memorie cache t\u00eb Cloudflare nuk ndikoi n\u00eb shpejt\u00ebsin\u00eb e p\u00ebrgjigjes. N\u00eb t\u00eb ardhmen, Cloudflare planifikon t\u00eb transferoj\u00eb patches e p\u00ebrgatitura n\u00eb b\u00ebrtham\u00ebn kryesore t\u00eb Linux, por para k\u00ebsaj do t\u00eb nevojitet rip\u00ebrpunimi i tyre, pasi ato jan\u00eb optimizuar p\u00ebr nj\u00eb ngarkes\u00eb t\u00eb ve\u00e7ant\u00eb dhe nuk mbulojn\u00eb t\u00eb gjitha fushat e aplikimit, p\u00ebr shembull, enkriptimin n\u00eb pajisje t\u00eb vogla t\u00eb integruara.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/blog-cloudflare-com-assets.storage.googleapis.com\/2020\/03\/prod.png\"><img decoding=\"async\" alt=\"Kompania Cloudflare p\u00ebrgatiti patches q\u00eb p\u00ebrshpejtojn\u00eb ndjesh\u00ebm enkriptimin e disqeve n\u00eb Linux\" src=\"\/wp-content\/uploads\/2020\/03\/cad243a99fa04bb74f5e6a25ae2e7b3e.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Burimi: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52630\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Cloudflare \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u0430\u043b\u0438 \u043e \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0434\u0438\u0441\u043a\u043e\u0432\u043e\u0433\u043e \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432 \u044f\u0434\u0440\u0435 Linux. \u0412 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u0431\u044b\u043b\u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u044b \u043f\u0430\u0442\u0447\u0438 \u0434\u043b\u044f \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b dm-crypt \u0438 Crypto API, \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0432\u0448\u0438\u0435 \u0432 \u0441\u0438\u043d\u0442\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u0442\u0435\u0441\u0442\u0435 \u0431\u043e\u043b\u0435\u0435 \u0447\u0435\u043c \u0432 \u0434\u0432\u0430 \u0440\u0430\u0437\u0430 \u043f\u043e\u0434\u043d\u044f\u0442\u044c \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0443\u044e \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u0438 \u0447\u0442\u0435\u043d\u0438\u0438 \u0438 \u0437\u0430\u043f\u0438\u0441\u0438, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0432 \u0434\u0432\u0430 \u0440\u0430\u0437\u0430 \u0441\u043d\u0438\u0437\u0438\u0442\u044c \u0437\u0430\u0434\u0435\u0440\u0436\u043a\u0438. \u041f\u0440\u0438 \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438 \u043d\u0430 \u0440\u0435\u0430\u043b\u044c\u043d\u043e\u043c \u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":75940,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-75939","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Cloudflare \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u0430\u043b\u0438 \u043e 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