Merge branch 'master' of github.com:jeena/GGS-report
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commit
31d225642b
1 changed files with 16 additions and 17 deletions
33
report.lyx
33
report.lyx
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@ -678,7 +678,7 @@ key "news/cnet/com/WoWProblems"
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.
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\begin_inset Note Note
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status open
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status collapsed
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\begin_layout Plain Layout
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Citation needed
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@ -689,7 +689,7 @@ Citation needed
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The existing game servers are functional but they lack good fault tolerance
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and the ability to scale well
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\begin_inset Note Note
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status open
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status collapsed
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\begin_layout Plain Layout
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Citation needed
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@ -765,8 +765,8 @@ key "Armstrong03"
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either.
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An unavailable phone system could potentially have life threatening consequence
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s, leaving the public unable to contact emergency services.
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The same can not be said about an unavailable game server.
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The statement that game servers are less important than phone systems is
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The same cannot be said about an unavailable game server.
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The statement that game servers are less important than phone systems are
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not a reason not to draw wisdom from what the telecoms have already learned.
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\end_layout
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@ -1066,7 +1066,7 @@ reference "cha:Implementation-of-a"
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provides a description of the prototype developed for this thesis.
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\begin_inset Note Note
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status open
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status collapsed
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\begin_layout Plain Layout
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We could go on and on about erlang..
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@ -1127,7 +1127,7 @@ Returning to the game industry, emergency services will not be contacted
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Consider an online casino company.
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The online casino company's servers must be available at all times to allow
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customers to play.
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If the servers are unavailable, customers can not play, and the company
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If the servers are unavailable, customers cannot play, and the company
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loses money.
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In this scenario, an unavailable server can be compared to a closed real-world
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casino.
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@ -1651,8 +1651,7 @@ Moves by players are made using the tables present in the chess club.
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This isolation of the games play an important part in many properties of
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the GGS, the isolation means that games can for example be transferred
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among different chess clubs, furthermore, if cheating takes place, corruption
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can only occur in the particular table where it was found, and can not
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spread.
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can only occur in the particular table where it was found, and cannot spread.
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\end_layout
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\begin_layout Standard
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@ -2273,8 +2272,8 @@ There are two main ways in which computer communication over the Internet
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is the most prominent application layer protocol.
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The transport layer protocols, are commonly used to transport application
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layer protocols, such as HTTP.
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TCP and UDP can not be used on their own, without an application layer
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protocol on top.
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TCP and UDP cannot be used on their own, without an application layer protocol
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on top.
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Application layer protocols such as HTTP on the other hand needs a transport
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layer protocol in order to work.
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@ -3074,7 +3073,7 @@ status open
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nomenclature{
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\backslash
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textbf{Network split}}{Separation of two networks, occurs when two networks
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can not communicate, commonly because of a hardware or software failiure}
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cannot communicate, commonly because of a hardware or software failiure}
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\end_layout
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\end_inset
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@ -3174,7 +3173,7 @@ Security
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\begin_layout Standard
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We only support languages running in a sandboxed environment.
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Each game session is started in its own sandbox.
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The sandboxing isolates the games in such a way that they can not interfere
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The sandboxing isolates the games in such a way that they cannot interfere
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with each other.
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If sandboxing was not in place, one game could potentially modify the contents
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of a different game.
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@ -4214,7 +4213,7 @@ In using message passing in favor of the methods commonly used at the time,
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the issues commonly associated with shared memory and locking were avoided.
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In Erlang, everything is a process, and everything operates in its own
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memory space.
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Memory can not be shared among processes, which prohibits a process from
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Memory cannot be shared among processes, which prohibits a process from
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corrupting the memory of a different process.
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\end_layout
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@ -5281,8 +5280,8 @@ Upon a crash, the coordinator process recovers the prior good state from
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A supervisor process monitors the coordinator process and restarts the
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process when it malfunctions.
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There is a window of time between the crash of the coordinator and the
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restarting of the coordinator, during this time, players can not be seated
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by new tables, and can not disconnect from the server.
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restarting of the coordinator, during this time, players cannot be seated
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by new tables, and cannot disconnect from the server.
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This window of time is very small, and the unavailability of the coordinator
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process should not be noticed by more than a short time lag for the clients.
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\end_layout
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@ -7639,7 +7638,7 @@ In the second testing session the delay between the server and clients was
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A connection can be seen between those values, as long as the server is
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under moderate load the delay is low and stable.
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When the load on the server increases heavily the delay does the same,
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this is because the server can not process all incoming messages and therefore
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this is because the server cannot process all incoming messages and therefore
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messages are put in a queue within the system.
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\end_layout
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@ -7650,7 +7649,7 @@ status collapsed
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\begin_layout Plain Layout
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Important things to note are that the number of clients is not a good way
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of measuring the performance of the server because the server is possible
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to have a large number of clients on the server but it can not handle all
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to have a large number of clients on the server but it cannot handle all
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the information.
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Instead the performance of the server should be measured in the number
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of messages it can handle per second.
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