Heroku：为什么我会在一天中失去记忆 - 错误日志？

Question

任何帮助找出问题所在将不胜感激。

我的 Heroku 指标显示 “超出内存配额：当前时间段内出现 2848 个内存错误。” 我的内存使用量下降到 256MB 以下，然后增加到 512MB 以上。我不确定这已经持续了多久。

我已附上日志

2019-11-06T23:05:49.278423+00:00 heroku[web.1]: Error R14 (Memory quota exceeded)
2019-11-06T23:06:11.508419+00:00 heroku[web.1]: Process running mem=561M(109.1%)
2019-11-06T23:06:11.508562+00:00 heroku[web.1]: Error R14 (Memory quota exceeded)
2019-11-06T23:06:11.537488+00:00 heroku[router]: at=info method=GET path="/list/search?search=Olive+Oil" host=www.nzchemicalsuppliers.co.nz request_id=c7f01600-87e6-4b8c-8274-7baf460876de fwd="157.55.39.123" dyno=web.1 connect=1ms service=7ms status=301 bytes=260 protocol=http
2019-11-06T23:06:11.532280+00:00 app[web.1]: 10.45.9.232 - - [06/Nov/2019:23:06:11 UTC] "GET /list/search?search=Olive+Oil HTTP/1.1" 301 0
2019-11-06T23:06:11.534556+00:00 app[web.1]: - -> /list/search?search=Olive+Oil
2019-11-06T23:06:15.572013+00:00 heroku[router]: at=info method=GET path="/list/search?search=sodium+lauryl+sulphate" host=www.nzchemicalsuppliers.co.nz request_id=b57d22bc-8604-484b-b1f6-dc2ccf80589c fwd="157.55.39.123" dyno=web.1 connect=1ms service=3ms status=301 bytes=273 protocol=http
2019-11-06T23:06:15.570589+00:00 app[web.1]: 10.69.178.208 - - [06/Nov/2019:23:06:15 UTC] "GET /list/search?search=sodium+lauryl+sulphate HTTP/1.1" 301 0
2019-11-06T23:06:15.570613+00:00 app[web.1]: - -> /list/search?search=sodium+lauryl+sulphate
2019-11-06T23:06:18.831927+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916] Started GET "/list/search?search=20_litre+packaging+20" for 66.249.75.149 at 2019-11-06 23:06:18 +0000
2019-11-06T23:06:18.833082+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916] Processing by ListController#search as HTML
2019-11-06T23:06:18.833167+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   Parameters: {"search"=>"20_litre packaging 20"}
2019-11-06T23:06:18.838525+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlRedirect Exists (2.1ms)[0m  [1m[34mSELECT  1 AS one FROM "url_redirects" WHERE "url_redirects"."from" = $1 LIMIT $2[0m  [["from", "/list/search?search=20_litre+packaging+20"], ["LIMIT", 1]]
2019-11-06T23:06:18.842179+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mContent Load (2.0ms)[0m  [1m[34mSELECT  "contents".* FROM "contents" WHERE "contents"."id" = $1 LIMIT $2[0m  [["id", 2], ["LIMIT", 1]]
2019-11-06T23:06:18.846298+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mContent Load (1.8ms)[0m  [1m[34mSELECT  "contents".* FROM "contents" WHERE "contents"."url_slug" = $1 ORDER BY "contents"."id" ASC LIMIT $2[0m  [["url_slug", "search_page"], ["LIMIT", 1]]
2019-11-06T23:06:18.848059+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mCACHE Content Load (0.0ms)[0m  [1m[34mSELECT  "contents".* FROM "contents" WHERE "contents"."url_slug" = $1 ORDER BY "contents"."id" ASC LIMIT $2[0m  [["url_slug", "search_page"], ["LIMIT", 1]]
2019-11-06T23:06:18.879169+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[35mSQL (26.7ms)[0m  [1m[34mSELECT "products"."id" AS t0_r0, "products"."name" AS t0_r1, "products"."other_names" AS t0_r2, "products"."company_id" AS t0_r3, "products"."created_at" AS t0_r4, "products"."updated_at" AS t0_r5, "products"."active" AS t0_r6, "products"."company_name" AS t0_r7, "products"."company_url" AS t0_r8, "companies"."id" AS t1_r0, "companies"."name" AS t1_r1, "companies"."active" AS t1_r2, "companies"."contact_name" AS t1_r3, "companies"."contact_phone" AS t1_r4, "companies"."location" AS t1_r5, "companies"."website" AS t1_r6, "companies"."created_at" AS t1_r7, "companies"."updated_at" AS t1_r8, "companies"."logo" AS t1_r9, "companies"."show_logo" AS t1_r10, "companies"."area" AS t1_r11, "companies"."email" AS t1_r12, "companies"."enable_enquiries" AS t1_r13, "companies"."show_supplier_link" AS t1_r14, "companies"."slug" AS t1_r15, "companies"."meta_description" AS t1_r16 FROM "products" LEFT OUTER JOIN "companies" ON "companies"."id" = "products"."company_id" WHERE ((1=1)  AND (upper(products.name) LIKE '20_LITRE PACKAGING 20%') AND (upper(products.name) LIKE '20_LITRE PACKAGING 20%') AND (upper(products.name) LIKE '20_LITRE PACKAGING 20%')) ORDER BY products.name ASC[0m
2019-11-06T23:06:18.905935+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[35mSQL (25.0ms)[0m  [1m[34mSELECT "products"."id" AS t0_r0, "products"."name" AS t0_r1, "products"."other_names" AS t0_r2, "products"."company_id" AS t0_r3, "products"."created_at" AS t0_r4, "products"."updated_at" AS t0_r5, "products"."active" AS t0_r6, "products"."company_name" AS t0_r7, "products"."company_url" AS t0_r8, "companies"."id" AS t1_r0, "companies"."name" AS t1_r1, "companies"."active" AS t1_r2, "companies"."contact_name" AS t1_r3, "companies"."contact_phone" AS t1_r4, "companies"."location" AS t1_r5, "companies"."website" AS t1_r6, "companies"."created_at" AS t1_r7, "companies"."updated_at" AS t1_r8, "companies"."logo" AS t1_r9, "companies"."show_logo" AS t1_r10, "companies"."area" AS t1_r11, "companies"."email" AS t1_r12, "companies"."enable_enquiries" AS t1_r13, "companies"."show_supplier_link" AS t1_r14, "companies"."slug" AS t1_r15, "companies"."meta_description" AS t1_r16 FROM "products" LEFT OUTER JOIN "companies" ON "companies"."id" = "products"."company_id" WHERE ((1=1)  AND (upper(products.name) LIKE '%20_LITRE%') AND (upper(products.name) LIKE '%PACKAGING%') AND (upper(products.name) LIKE '%20%')) ORDER BY products.name ASC[0m
2019-11-06T23:06:18.994728+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[35mSQL (86.0ms)[0m  [1m[34mSELECT "products"."id" AS t0_r0, "products"."name" AS t0_r1, "products"."other_names" AS t0_r2, "products"."company_id" AS t0_r3, "products"."created_at" AS t0_r4, "products"."updated_at" AS t0_r5, "products"."active" AS t0_r6, "products"."company_name" AS t0_r7, "products"."company_url" AS t0_r8, "companies"."id" AS t1_r0, "companies"."name" AS t1_r1, "companies"."active" AS t1_r2, "companies"."contact_name" AS t1_r3, "companies"."contact_phone" AS t1_r4, "companies"."location" AS t1_r5, "companies"."website" AS t1_r6, "companies"."created_at" AS t1_r7, "companies"."updated_at" AS t1_r8, "companies"."logo" AS t1_r9, "companies"."show_logo" AS t1_r10, "companies"."area" AS t1_r11, "companies"."email" AS t1_r12, "companies"."enable_enquiries" AS t1_r13, "companies"."show_supplier_link" AS t1_r14, "companies"."slug" AS t1_r15, "companies"."meta_description" AS t1_r16 FROM "products" LEFT OUTER JOIN "companies" ON "companies"."id" = "products"."company_id" WHERE ((1=1)  AND (upper(products.other_names) LIKE '%20_LITRE%') AND (upper(products.other_names) LIKE '%PACKAGING%') AND (upper(products.other_names) LIKE '%20%')) ORDER BY products.name ASC[0m
2019-11-06T23:06:19.002966+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[35mSQL (2.1ms)[0m  [1m[34mSELECT "products"."id" AS t0_r0, "products"."name" AS t0_r1, "products"."other_names" AS t0_r2, "products"."company_id" AS t0_r3, "products"."created_at" AS t0_r4, "products"."updated_at" AS t0_r5, "products"."active" AS t0_r6, "products"."company_name" AS t0_r7, "products"."company_url" AS t0_r8, "companies"."id" AS t1_r0, "companies"."name" AS t1_r1, "companies"."active" AS t1_r2, "companies"."contact_name" AS t1_r3, "companies"."contact_phone" AS t1_r4, "companies"."location" AS t1_r5, "companies"."website" AS t1_r6, "companies"."created_at" AS t1_r7, "companies"."updated_at" AS t1_r8, "companies"."logo" AS t1_r9, "companies"."show_logo" AS t1_r10, "companies"."area" AS t1_r11, "companies"."email" AS t1_r12, "companies"."enable_enquiries" AS t1_r13, "companies"."show_supplier_link" AS t1_r14, "companies"."slug" AS t1_r15, "companies"."meta_description" AS t1_r16 FROM "products" LEFT OUTER JOIN "companies" ON "companies"."id" = "products"."company_id" WHERE ((1=1)  AND (upper(companies.name) LIKE '%20_LITRE%') AND (upper(companies.name) LIKE '%PACKAGING%') AND (upper(companies.name) LIKE '%20%')) ORDER BY products.name ASC[0m
2019-11-06T23:06:19.006503+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[35mSQL (1.7ms)[0m  [1m[34mSELECT "products"."id" AS t0_r0, "products"."name" AS t0_r1, "products"."other_names" AS t0_r2, "products"."company_id" AS t0_r3, "products"."created_at" AS t0_r4, "products"."updated_at" AS t0_r5, "products"."active" AS t0_r6, "products"."company_name" AS t0_r7, "products"."company_url" AS t0_r8, "companies"."id" AS t1_r0, "companies"."name" AS t1_r1, "companies"."active" AS t1_r2, "companies"."contact_name" AS t1_r3, "companies"."contact_phone" AS t1_r4, "companies"."location" AS t1_r5, "companies"."website" AS t1_r6, "companies"."created_at" AS t1_r7, "companies"."updated_at" AS t1_r8, "companies"."logo" AS t1_r9, "companies"."show_logo" AS t1_r10, "companies"."area" AS t1_r11, "companies"."email" AS t1_r12, "companies"."enable_enquiries" AS t1_r13, "companies"."show_supplier_link" AS t1_r14, "companies"."slug" AS t1_r15, "companies"."meta_description" AS t1_r16 FROM "products" LEFT OUTER JOIN "companies" ON "companies"."id" = "products"."company_id" WHERE ((1=1)  AND (upper(companies.area) LIKE '%20_LITRE%') AND (upper(companies.area) LIKE '%PACKAGING%') AND (upper(companies.area) LIKE '%20%')) ORDER BY products.name ASC[0m
2019-11-06T23:06:19.029475+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[35mSQL (19.3ms)[0m  [1m[34mSELECT "products"."id" AS t0_r0, "products"."name" AS t0_r1, "products"."other_names" AS t0_r2, "products"."company_id" AS t0_r3, "products"."created_at" AS t0_r4, "products"."updated_at" AS t0_r5, "products"."active" AS t0_r6, "products"."company_name" AS t0_r7, "products"."company_url" AS t0_r8, "companies"."id" AS t1_r0, "companies"."name" AS t1_r1, "companies"."active" AS t1_r2, "companies"."contact_name" AS t1_r3, "companies"."contact_phone" AS t1_r4, "companies"."location" AS t1_r5, "companies"."website" AS t1_r6, "companies"."created_at" AS t1_r7, "companies"."updated_at" AS t1_r8, "companies"."logo" AS t1_r9, "companies"."show_logo" AS t1_r10, "companies"."area" AS t1_r11, "companies"."email" AS t1_r12, "companies"."enable_enquiries" AS t1_r13, "companies"."show_supplier_link" AS t1_r14, "companies"."slug" AS t1_r15, "companies"."meta_description" AS t1_r16 FROM "products" LEFT OUTER JOIN "companies" ON "companies"."id" = "products"."company_id" WHERE ((1=1)  AND (upper(products.company_name) LIKE '%20_LITRE%') AND (upper(products.company_name) LIKE '%PACKAGING%') AND (upper(products.company_name) LIKE '%20%')) ORDER BY products.name ASC[0m
2019-11-06T23:06:19.159297+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[35mSQL (127.2ms)[0m  [1m[34mSELECT "products"."id" AS t0_r0, "products"."name" AS t0_r1, "products"."other_names" AS t0_r2, "products"."company_id" AS t0_r3, "products"."created_at" AS t0_r4, "products"."updated_at" AS t0_r5, "products"."active" AS t0_r6, "products"."company_name" AS t0_r7, "products"."company_url" AS t0_r8, "companies"."id" AS t1_r0, "companies"."name" AS t1_r1, "companies"."active" AS t1_r2, "companies"."contact_name" AS t1_r3, "companies"."contact_phone" AS t1_r4, "companies"."location" AS t1_r5, "companies"."website" AS t1_r6, "companies"."created_at" AS t1_r7, "companies"."updated_at" AS t1_r8, "companies"."logo" AS t1_r9, "companies"."show_logo" AS t1_r10, "companies"."area" AS t1_r11, "companies"."email" AS t1_r12, "companies"."enable_enquiries" AS t1_r13, "companies"."show_supplier_link" AS t1_r14, "companies"."slug" AS t1_r15, "companies"."meta_description" AS t1_r16 FROM "products" LEFT OUTER JOIN "companies" ON "companies"."id" = "products"."company_id" WHERE ((1=1)  AND (upper(products.name) LIKE '%20_LITRE%' OR upper(products.other_names) LIKE '%20_LITRE%' or upper(companies.name) LIKE '%20_LITRE%' or upper(companies.area) LIKE '%20_LITRE%') AND (upper(products.name) LIKE '%PACKAGING%' OR upper(products.other_names) LIKE '%PACKAGING%' or upper(companies.name) LIKE '%PACKAGING%' or upper(companies.area) LIKE '%PACKAGING%') AND (upper(products.name) LIKE '%20%' OR upper(products.other_names) LIKE '%20%' or upper(companies.name) LIKE '%20%' or upper(companies.area) LIKE '%20%')) ORDER BY products.name ASC[0m
2019-11-06T23:06:19.165976+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   Rendering list/search.html.erb within layouts/application
2019-11-06T23:06:19.169205+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.6ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "a"], ["LIMIT", 1]]
2019-11-06T23:06:19.171653+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.2ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "b"], ["LIMIT", 1]]
2019-11-06T23:06:19.174728+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.3ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "c"], ["LIMIT", 1]]
2019-11-06T23:06:19.176851+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.2ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "d"], ["LIMIT", 1]]
2019-11-06T23:06:19.179044+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.3ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "e"], ["LIMIT", 1]]
2019-11-06T23:06:19.181084+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.2ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "f"], ["LIMIT", 1]]
2019-11-06T23:06:19.183162+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.3ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "g"], ["LIMIT", 1]]
2019-11-06T23:06:19.185220+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.2ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "h"], ["LIMIT", 1]]
2019-11-06T23:06:19.187257+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.1ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "i"], ["LIMIT", 1]]
2019-11-06T23:06:19.189302+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.2ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "j"], ["LIMIT", 1]]
2019-11-06T23:06:19.191419+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.3ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "k"], ["LIMIT", 1]]
2019-11-06T23:06:19.193432+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.2ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "l"], ["LIMIT", 1]]
2019-11-06T23:06:19.196123+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.8ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "m"], ["LIMIT", 1]]
2019-11-06T23:06:19.198330+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.3ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "n"], ["LIMIT", 1]]
2019-11-06T23:06:19.201841+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (2.6ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "o"], ["LIMIT", 1]]
2019-11-06T23:06:19.204019+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.3ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "p"], ["LIMIT", 1]]
2019-11-06T23:06:19.206027+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mUrlItem Load (1.2ms)[0m  [1m[34mSELECT  "url_items".* FROM "url_items" WHERE "url_items"."slug" = $1 ORDER BY "url_items"."id" ASC LIMIT $2[0m  [["slug", "q"], ["LIMIT", 1]]
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2019-11-06T23:06:19.322974+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mCACHE Setting Load (0.1ms)[0m  [1m[34mSELECT  "settings".* FROM "settings" WHERE "settings"."id" = $1 LIMIT $2[0m  [["id", 1], ["LIMIT", 1]]
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2019-11-06T23:06:19.325057+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mCACHE Setting Load (0.0ms)[0m  [1m[34mSELECT  "settings".* FROM "settings" WHERE "settings"."id" = $1 LIMIT $2[0m  [["id", 1], ["LIMIT", 1]]
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2019-11-06T23:06:19.362178+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mCACHE Setting Load (0.0ms)[0m  [1m[34mSELECT  "settings".* FROM "settings" WHERE "settings"."id" = $1 LIMIT $2[0m  [["id", 1], ["LIMIT", 1]]
2019-11-06T23:06:19.362638+00:00 app[web.1]: [d5fbbd9d-3e4a-488c-8e02-beca6b8e8916]   [1m[36mCACHE Setting Load (0.0ms)[0m  [1m[34mSELECT  "settings".* FROM "settings" WHERE "settings"."id" = $1 LIMIT $2[0m  [["id", 1], ["LIMIT", 1]]
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Answer 1

经过进一步研究，我对我的答案进行了修改。

我们的 heroku 应用也有同样的问题。我查看了 New Relic 分析，发现虽然 heroku 报告应用程序使用了 5 GB，但 ruby​​ 堆仅增长到 3 MB。此外，虽然 heroku 报告应用程序的内存在重新启动测功机之前呈线性增长，但 New Relic 显示 ruby​​ 堆会增长和缩小。

我的结论是问题出在 ruby​​ 分配器上。这是您无能为力的事情。但是，您可以切换到使用 jemalloc 库编译的 ruby​​。

本文Malloc Can Double Multi-threaded Ruby Program Memory Usage解释。

jemalloc 的 heroku 构建包可以是在 github 上找到的这个，gaffneyc/heroku-buildpack-jemalloc。

---

编辑前：

我确实找到了一篇文章What causes Ruby memory bloat?，建议设置MALLOC_ARENA_MAX=2，并升级为ruby 2.6。

heroku config:add MALLOC_ARENA_MAX=2 --remote production

我没有看到我的应用有很大的不同。

ruby-memory-environment-variables-simpler-than-they-look 文章提供了一种调整垃圾回收设置的简单方法，但它们与一次分配多少内存有关，没有太大帮助。

ruby 2.7 计划有一个GC.compact 命令，我期待提供帮助。