National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
VMA merging in Linux
Matěna, Jakub ; Babka, Vlastimil (advisor) ; Bulej, Lubomír (referee)
This thesis deals with virtual memory management in the Linux kernel. Files or devices can be mapped into virtual memory using the mmap() sys- tem call, which is also capable of creating so-called anonymous mappings. Those do not map anything and serve only as a memory allocation method that can specify memory protection and flags for the created anonymous virtual memory area (VMA). A mapping can be merged or split depending on its flags, memory protection, location in the virtual memory and other parameters. However, in some cases even when two VMAs have practically identical parameters, they may not merge successfully because of implementation limitations. This thesis con- centrates on anonymous VMAs and their page offset and anon vma parameters, which in some cases prevent a merge in the current mainline kernel. It is demon- strated that in most of the cases with reasonable amount of effort the obstacles can be removed and the merges happen. v
Searching public transport connections based on transport timetables and individual transport
Matěna, Jakub ; Nečaský, Martin (advisor) ; Kopecký, Michal (referee)
This thesis deals with routing over open data in Prague. Its main purpose is to create server/client based application that makes connection searches combining both public transport and individual car transport. Server provides Protocol buffers \gls{api} that can be used by anyone to create client application for any available platform. Moreover demonstrative client application for Android devices was created as part of this project. All components were tested for usability, functionality and speed. Open data from several sources were used to demonstrate that publishing data can offer new possibilities and that we can achieve complex goals by combining them. It was shown that intermodal planning in Prague is possible and can save time, money and even environment.

See also: similar author names
1 Matěna, Jiří
11 Matěna, Josef
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