{"topic":{"id":11381,"title":"cachelab partA 中在什么情况下会发生 eviction","slug":"topic","categoryId":58,"createdAt":"2024-04-12 05:50:57.081611","bumpedAt":"2024-04-12 16:37:19.493012","views":177,"postsCount":2,"highestPostNumber":2,"likeCount":0,"closed":false,"pinned":false,"pinnedGlobally":false,"pinnedAt":null,"pinnedUntil":null,"isBanner":false,"excerpt":"以 dave.traces 文件为例，标准答案给的是 2hit 3miss 1eviction，我手动模拟运行该文件输入得到的结果一直是 2hit 3miss 0eviction，不太清楚哪里发生了一次 eviction 下面是我手动模拟过程： s 是 2 位，b 是 4 位，E 是 1 位，数值最大是 50，可以用 6 位表示，说明 tag 位都是 0，10 对应 s 是 00,18 20 28 是 01，50 对应是 11，开始时…","deletedAt":null,"isAnonymous":false,"category":{"id":58,"name":"计算机系统导论","slug":"ics","color":"3AB54A"},"author":{"id":3342,"username":"dxx","name":null,"avatarUrl":null},"tags":[]},"posts":[{"id":29567,"postNumber":1,"raw":"以 dave.traces 文件为例，标准答案给的是 2hit 3miss 1eviction，我手动模拟运行该文件输入得到的结果一直是 2hit 3miss 0eviction，不太清楚哪里发生了一次 eviction\n[grid mode=\"tile\"]\n![微信图片_20240412134515|690x24](/uploads/image/3b/cd/3bcd2869f4443d3851319d6f98e7df272fc8415287e9f3f767245dbd9561d152.avif)\n![image|82x131](/uploads/image/2c/71/2c7192b67a37ad3ef4ca369643a43d33a66bc72f27a4986fcf161ccf79705af7.avif)\n[/grid]\n下面是我手动模拟过程：\ns 是 2 位，b 是 4 位，E 是 1 位，数值最大是 50，可以用 6 位表示，说明 tag 位都是 0，10 对应 s 是 00,18 20 28 是 01，50 对应是 11，\n开始时输入 10 即 00 组中 cacheline 未存储，miss 一次，输入 18，miss 一次，输入 20 28 hit2 次，最后输入 50，miss 一次，总共 2 次 hit 3 次 miss。哪里进行了一次 eviction 呢","cooked":"

以 dave.traces 文件为例，标准答案给的是 2hit 3miss 1eviction，我手动模拟运行该文件输入得到的结果一直是 2hit 3miss 0eviction，不太清楚哪里发生了一次 eviction

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下面是我手动模拟过程：
\ns 是 2 位，b 是 4 位，E 是 1 位，数值最大是 50，可以用 6 位表示，说明 tag 位都是 0，10 对应 s 是 00,18 20 28 是 01，50 对应是 11，
\n开始时输入 10 即 00 组中 cacheline 未存储，miss 一次，输入 18，miss 一次，输入 20 28 hit2 次，最后输入 50，miss 一次，总共 2 次 hit 3 次 miss。哪里进行了一次 eviction 呢

\n","createdAt":"2024-04-12 05:50:57.194948","updatedAt":"2024-04-12 05:54:59.971194","replyToPostNumber":null,"replyCount":0,"likeCount":0,"wordCount":176,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":2,"publicVersion":2,"deletedAt":null,"isAnonymous":false,"user":{"id":3342,"username":"dxx","name":null,"avatarUrl":null,"admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":29612,"postNumber":2,"raw":"![image|690x293](/uploads/image/03/8c/038c50dcc866fe60fa5f9841e9d375f1e10810d2f4bcb601498ba633a5199260.avif)","cooked":"

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\n","createdAt":"2024-04-12 16:37:19.493012","updatedAt":"2024-04-13 04:25:11.339395","replyToPostNumber":null,"replyCount":0,"likeCount":0,"wordCount":1,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":1,"publicVersion":1,"deletedAt":null,"isAnonymous":false,"user":{"id":1163,"username":"dfshan","name":null,"avatarUrl":null,"admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}}],"hasMore":false,"lastReadPostNumber":1,"hasUrlPostNumber":false}