The Case for RAMCloud
Communications of the ACM, 2011 · paper · Computer science
Argues for RAMCloud, a datacenter storage approach keeping all data in the main memory of thousands of commodity servers. The authors believe it can give durable, available storage with 100-1000 times the throughput and lower latency than disk-based systems.
Checked: PDF from web.stanford.edu, fetched 4 Oct 2026. Page numbers are those of that PDF.
4 findings
Reference or label Table 2 row "Jim Gray’s Rule [11] (1KB blocks)" and its caption "the approach of Gray and Putzolu [11]" cite [11], which is Garcia-Molina and Salem; Gray and Putzolu is [12], as the body text on the same page cites ("Jim Gray’s Rule [12]").
- p. 3 Table 2, last row label
Jim Gray’s Rule [11] (1KB blocks)
- p. 3 Table 2 caption
it uses the approach of Gray and Putzolu [11]
- p. 3 Section 3.2, last paragraph
Jim Gray’s Rule [12]
- p. 14 References
[12] Gray, J., and Putzolu, G.F., “The Five-minute Rule
Judge's note: Viewed page 3 (Table 2 row, caption and Section 3.2 text) and the reference list on pages 13-14. [11] is Garcia-Molina and Salem, "Main Memory Database Systems: An Overview"; [12] is Gray and Putzolu, "The Five-minute Rule...". The caption names Gray and Putzolu, so both table citations should be [12].
Second check: another model agreed
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Reference or label Section 4.1: "Newer 10GB switches such as the Arista 7100S [13]" cites [13], which is "Johnson, R., and Rothschild, J., personal communications"; the Arista entry is [2] "Arista Networks 7100 Series Switches", which is cited nowhere in the text.
- p. 7 Section 4.1, first paragraph on page
10GB switches such as the Arista 7100S [13]
- p. 13 References
[2] Arista Networks 7100 Series Switches
- p. 14 References
[13] Johnson, R., and Rothschild, J., personal commu
- p. 7 Section 4.1, first paragraph
such as the Arista 7100S [13]
Judge's note: Viewed page 7 and the reference list on pages 13-14. [13] is the personal communication used elsewhere for Facebook figures (pages 2, 5, 6). A search of the body text finds no citation of [2]. The citation should be [2].
Second check: another model agreed
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Reference or label Section 6: "Jim Gray has predicted the migration of data from disk to random access memory [14]" cites [14], which is Kallman et al., "H-store: a High-Performance, Distributed Main Memory Transaction Processing System".
- p. 13 Section 6, third paragraph
tion of data from disk to random access memory [14]
- p. 14 References
[14] Kallman, R., Kimura, H., Natkins, J., et al., “H-
- p. 14 References
[20] Robbins, S., RAM is the new disk…
- p. 13 Section 6, Related Work
Jim Gray has predicted the migra-
Judge's note: Viewed page 13 and the reference list on page 14. [14] is the H-store paper, and the next clause, about the H-store project, cites [20] (Robbins, "RAM is the new disk…"). The two numbers in the sentence appear to be swapped; C012 is the other citation. The list has no entry authored by Gray on this prediction, so [20] is the only entry that fits.
Second check: another model agreed
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Reference or label Section 6: "the H-store project has reintroduced the notion of main-memory databases as a solution to database performance problems [20]" cites [20], which is "Robbins, S., RAM is the new disk…"; the H-store paper is [14].
- p. 13 Section 6, third paragraph
main-memory databases as a solution to database per-formance problems [20]
- p. 14 References
[20] Robbins, S., RAM is the new disk…
- p. 14 References
store: a High-Performance, Distributed Main
- p. 13 Section 6, third paragraph
formance problems [20]
Judge's note: Viewed page 13 and the reference list on page 14. This is a separate citation from C011 in the same sentence and is wrong in its own right: [14] is Kallman et al., H-store, and it is attached to the preceding clause about Jim Gray. Kept as its own entry because it is a second citation to be corrected.
Second check: another model agreed
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7 minor (typos and the like; most checked by the judge only)
Typo Reference "[18] Ramakrishnan, R., and Gehrke, J., Database Management Systems" is listed but never cited in the text.
- p. 5 Section 3.4
100-200 requests to generate HTML for each page [8]
Judge's note: The quoted citation "100-200 requests to generate HTML for each page [8]" (page 5) points to the Dynamo paper, and nothing in the files shows it to be wrong; that part is not confirmed. A search of the body text for every citation number found all of [1]-[23] cited except [2] and [18]. [2] is accounted for by the miscitation in C007; [18] is simply an uncited list entry. Which citation, if any, was meant to be [18] cannot be told from the files.
Second check: none (judge only)
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Typo Section 3.6: "they illustrate that many applications have historically been considered “large” can be accommodated easily by a RAMCloud": a word is missing ("applications that have historically been considered").
- p. 6 Section 3.6, second bullet
applications have historically been considered
- p. 6 Section 3.6, second bullet
many applications have historically been considered “large” can be accommodated easily
- p. 6 Section 3.6, second bullet
they illustrate that many applications have historically been considered “large” can be accommodated easily by a RAM-Cloud
- p. 6 Section 3.6, second bullet
many applications have historically been considered
Judge's note: Viewed page 6 across the column break; the sentence is printed as quoted, with two finite verbs and no relative pronoun.
Second check: none (judge only)
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Typo Section 4.1: "Newer 10GB switches such as the Arista 7100S" writes a switch speed with "GB", which the paper uses elsewhere for gigabytes ("64 GB", "$60/GB").
- p. 7 Section 4.1, first paragraph on page
10GB switches such as the Arista 7100S
- p. 7 Section 4.1
Newer 10GB switches such as the Arista 7100S
Judge's note: Viewed page 7; printed as quoted. The meaning (10-gigabit Ethernet) is clear and "10GB" is common informal shorthand, so this is cosmetic.
Second check: none (judge only)
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Typo Reference [9]: "Implementation Techniques for Made Memory Database Systems"; "Made" should be "Main".
- p. 13 References, entry [9]
tation Techniques for Made Memory Database
- p. 13 References [9]
Implemen-tation Techniques for Made Memory Database
- p. 13 References, [9]
Implementation Techniques for Made Memory Database Systems
- p. 13 Reference [9]
Techniques for Made Memory Database
Judge's note: Viewed page 13; the page prints "Made Memory Database". The entry is cited in Section 6 as "databases stored entirely in main memory [9, 11]" and [11] is titled "Main Memory Database Systems", so the slip is evident from the paper itself. The exact published title of the cited work was not checked against an outside source.
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Typo Reference [6]: "Cooper, B., Ramakrishnan, R., Srivastava, U., et. al." has a stray full stop after "et"; the other entries print "et al.".
- p. 13 References, entry [6]
Cooper, B., Ramakrishnan, R., Srivastava, U., et.
- p. 13 References, entry [6]
[6] Cooper, B., Ramakrishnan, R., Srivastava, U., et.
- p. 13 References, [6]
Srivastava, U., et. al.,
Judge's note: Viewed page 13; the stop after "et" is printed. Entries [1], [3], [4], [8], [9] on the same page and [14], [23] on page 14 print "et al.".
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Typo Reference [4]: "Chang, F., Dean, J, Ghemawat, S., et al." is missing the full stop after the initial "J".
- p. 13 References, [4]
Chang, F., Dean, J, Ghemawat, S., et al.
Judge's note: Viewed page 13; the entry prints "Dean, J," while every other initial in the list is followed by a full stop.
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Typo Reference-list entries "[2] Arista Networks 7100 Series Switches" and "[18] Ramakrishnan, R., and Gehrke, J., Database Management Systems, Third Edition, McGraw-Hill, 2003." are never cited in the body of the paper.
- p. 14 References, entry [18]
[18] Ramakrishnan, R., and Gehrke, J., Database Man
- p. 13 References, entry [2]
[2] Arista Networks 7100 Series Switches
- p. 14 Reference list
[18] Ramakrishnan, R., and Gehrke, J.
Only the authors can say what is right here.
Judge's note: Viewed the crops of both entries; they read as quoted. Searched extract/main.txt for every bracketed citation: the body (before the reference list) cites [1], [3]-[17] and [19]-[23], including the combined "[9, 11]", but neither [2] nor [18] appears outside the list. The search was on the text layer only; I did not check the page images for a citation the extraction might have dropped. Whether [2] is the intended target of a mis-numbered Arista citation elsewhere, and where [18] was meant to be cited, only the authors can say. Cosmetic: no claim in the text is affected.
Second check: none (judge only)