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finish conclusion of report

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1 parent 029b189 commit 8d70b273014ecb482fbe3757d47fc7c707781229 Ming committed Dec 14, 2012
Showing with 27 additions and 16 deletions.
  1. +2 −2 doc/report/abstract.tex
  2. +16 −6 doc/report/conclusion.tex
  3. +6 −5 doc/report/main.aux
  4. BIN doc/report/main.dvi
  5. +3 −3 doc/report/main.log
4 doc/report/abstract.tex
@@ -16,9 +16,9 @@
be stored efficiently in terms of performance and cost. We
implemented the system based on LevelDB, and benchmarked the system
using a two-tiered store including a Flash tier and a HDD tier. Our
-system presents up to 5.78$\times$ speedup of throughput over the
+system presents up to 5.86$\times$ speedup of throughput over the
single-tier store using HDD. Particularly, for a workload emulating
-Facebook's photo requests, we observe a speedup of 4.46$\times$ of the
+Facebook's photo requests, we observe a speedup of 3.73$\times$ of the
throughput using only a small Flash of 5.9\% of the total storage
22 doc/report/conclusion.tex
@@ -1,13 +1,23 @@
+We present a multi-tier key/value store using Flash SSD and HDD. It
+exploits the size-tiered feature in many workloads, especially
+multi-resolution image workload. It achieves good balance of
+performance and cost by leveraging SSD's high random I/O throughput as
+well as HDD's good sequential I/O performance. With a small Flash of
+5.9\% of the total storage capacity, it is able to improve the ops/sec
+of an emulated Facebook image workload by 3.73$\times$.
+\paragraph{Future Work}
+We plan to study the model of multi-tier key/value considering cost,
+characteristics of different drives, as well as more workload specific
+features besides the ratio of read small and large objects. More
+threads will be used in benchmark to exploit better parallelism in
+Flash SSD.
-\subsection{Future work}
-We will test the green device in real world workloads and provide
-mechanism to tune the performance of the green device according to
-workload-specific features. We will also perform data grouping to
-achieve more data locality.
+The author would like to thank Vasily Tarasov and Mike Ferdman for
+their valuable comments.
%% For Emacs:
11 doc/report/main.aux
@@ -75,10 +75,6 @@
\@writefile{lof}{\contentsline {figure}{\numberline {13}{\ignorespaces MRIS Read Performance (mb/sec) by iostat}}{7}}
\@writefile{toc}{\contentsline {section}{\numberline {4}Related Work}{7}}
@@ -88,7 +84,11 @@
\@writefile{toc}{\contentsline {paragraph}{(3) Multi-level Caching.}{7}}
\@writefile{toc}{\contentsline {section}{\numberline {5}Conclusions}{7}}
-\@writefile{toc}{\contentsline {subsection}{\numberline {5.1}Future work}{7}}
+\@writefile{toc}{\contentsline {paragraph}{Future Work.}{7}}
@@ -111,3 +111,4 @@
+\@writefile{toc}{\contentsline {paragraph}{Acknowledgement.}{8}}
BIN doc/report/main.dvi
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6 doc/report/main.log
@@ -1,4 +1,4 @@
-This is pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009/Debian) (format=latex 2012.8.26) 14 DEC 2012 22:00
+This is pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009/Debian) (format=latex 2012.8.26) 14 DEC 2012 23:25
entering extended mode
%&-line parsing enabled.
@@ -574,7 +574,7 @@ File: figures/ratio_thput_predict.eps Graphic file (type eps)
<figures/ratio_thput_predict.eps> [6]
File: figures/mris_ratio_iostat_thput.eps Graphic file (type eps)
-(./related.tex) (./conclusion.tex) (./main.bbl [7]
+(./related.tex) (./conclusion.tex [7]) (./main.bbl
Underfull \hbox (badness 10000) in paragraph at lines 114--119
\OT1/ptm/m/n/10 life-time. $\OT1/ptm/m/sl/8 https : / / groups . google . com
/ d / topic / leveldb /
@@ -596,4 +596,4 @@ Here is how much of TeX's memory you used:
29 hyphenation exceptions out of 8191
63i,11n,57p,435b,345s stack positions out of 5000i,500n,10000p,200000b,50000s
-Output written on main.dvi (8 pages, 58340 bytes).
+Output written on main.dvi (8 pages, 59220 bytes).

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