{"id":951,"date":"2026-05-20T20:43:16","date_gmt":"2026-05-20T20:43:16","guid":{"rendered":"https:\/\/ppc.mit.edu\/t2\/?p=951"},"modified":"2026-05-20T20:43:18","modified_gmt":"2026-05-20T20:43:18","slug":"mit-tier-2-report-may-20-2026","status":"publish","type":"post","link":"https:\/\/ppc.mit.edu\/t2\/?p=951","title":{"rendered":"MIT Tier-2 Report &#8211; May 20 2026"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">SiteReadiness: 100.0%<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SAM tests: 97.6%<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Normal operations during the last week. On Friday our XRootD was overloaded with requests, not clear what specific CMS activity was causing it. We continue using host certificate with a wildcard.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"355\" data-id=\"946\" src=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.57.17-AM-1024x355.png\" alt=\"\" class=\"wp-image-946\" srcset=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.57.17-AM-1024x355.png 1024w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.57.17-AM-300x104.png 300w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.57.17-AM-768x266.png 768w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.57.17-AM-1536x533.png 1536w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.57.17-AM-2048x710.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"365\" data-id=\"947\" src=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.58.15-AM-1024x365.png\" alt=\"\" class=\"wp-image-947\" srcset=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.58.15-AM-1024x365.png 1024w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.58.15-AM-300x107.png 300w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.58.15-AM-768x273.png 768w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.58.15-AM-1536x547.png 1536w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.58.15-AM-2048x729.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"357\" data-id=\"948\" src=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.20-AM-1024x357.png\" alt=\"\" class=\"wp-image-948\" srcset=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.20-AM-1024x357.png 1024w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.20-AM-300x105.png 300w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.20-AM-768x268.png 768w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.20-AM-1536x535.png 1536w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.20-AM-2048x714.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"357\" data-id=\"949\" src=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.36-AM-1024x357.png\" alt=\"\" class=\"wp-image-949\" srcset=\"https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.36-AM-1024x357.png 1024w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.36-AM-300x105.png 300w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.36-AM-768x268.png 768w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.36-AM-1536x535.png 1536w, https:\/\/ppc.mit.edu\/t2\/wp-content\/uploads\/2026\/05\/Screenshot-2026-05-20-at-7.59.36-AM-2048x714.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"<p>SiteReadiness: 100.0% SAM tests: 97.6% Normal operations during the last week. On Friday our XRootD was overloaded with requests, not clear what specific CMS activity was causing it. We continue using host certificate with a wildcard.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[12],"class_list":["post-951","post","type-post","status-publish","format-standard","hentry","category-report","tag-weekly"],"_links":{"self":[{"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/posts\/951","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=951"}],"version-history":[{"count":4,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/posts\/951\/revisions"}],"predecessor-version":[{"id":955,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=\/wp\/v2\/posts\/951\/revisions\/955"}],"wp:attachment":[{"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=951"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=951"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ppc.mit.edu\/t2\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=951"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}