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Embedded System for Water Level Monitoring
Hanák, Jiří ; Kašpárek, Tomáš (referee) ; Šimek, Václav (advisor)
This work is dealing with the design and implementation of an embedded water level monitoring system. The purpose of the system is to control the filling of a tank based on the water level. First of all, the attention is given to the survey of existing measurement techniques and selection of the appropriate sensing elements for a given scenario. In fact, the embedded system is using TFmini and JSN-SR04T-2.0 contactless sensors. The system is controlled by STM32F0 microcontroller from STMicroelectronics programmed in C using HAL abstraction layer. The measured results are sent via Wi-Fi SoC ESP8266EX to the Python server that is used for processing and demonstratiton purposes.
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I/O Subsystem Optimalization Using SSD
Bělousov, Petr ; Chalupníček, Kamil (referee) ; Kašpárek, Tomáš (advisor)
The bachelor thesis examines IO subsystem optimization using SSD cache to speed up HDDs. I examined possible server loads and identified those that are suitable for caching. In the first part I introduce 2 caching solutions, LVM cache and B-cache with their management capabilities and 2 filesystems Ext4 and XFS. In the second part IO performance of LVM cache and B-cache with Ext4 and XFS filesystem is benchmarked and compared to an uncached HDD array.
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Management Application for Touristic Routes in OSM
Lev, Patrik ; Chalupníček, Kamil (referee) ; Kašpárek, Tomáš (advisor)
The goal of this bachelor thesis is a design and realization of an application, which would automatically check the hiking trails managed by Czech Tourist Club (Czech: Klub českých turistů, KČT) in the OpenStreetMap (hereinafter OSM) project's data. In this technical report is described the OSM project and its way of community mapping, data storage and the OSM data distribution. To map the hiking trails in the Czechia we use so called OpenTrackMap. In the following part are described the possibilities of the manual and automatic OSM data check. The part of the technical report is a design of the OSM data checking application. In the end of this work is described the implementation of the application and there is also attached the manual for the application.
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Cardiometabolic risk assessment in patients with schizophrenia
Protopopová, Dita ; Masopust, Jiří (advisor) ; Doubek, Pavel (referee) ; Kašpárek, Tomáš (referee)
Cardiometabolic risk assessment in patients with schizophrenia SUMMARY The mortality due to cardiovascular (CV) disease is doubled in patients with schizophrenia compared to general population and they have a higher prevalence of modifiable CV risk factors. The causes of increased CV burden in schizophrenia include unhealthy life style and high prevalence of smoking. Schizophrenia itself is associated with changes in catecholamines, hormones and pro-inflammatory mediators with potential impact on cardiovascular system and its function. Antipsychotics can have a negative impact on various metabolic parameters and further increase CV risk in treated individuals. Both the diagnostics and treatment of CV health problems is insufficient in patients with schizophrenia. Regular monitoring of CV risk factors is recommended in clinical guidelines. However, based on studies in general population the traditional CV risk factors fail in prediction of coronary heart disease or other serious CV events in 25 to 50%. Endothelial function measurement seems to be a more sensitive tool to assess the risk of CV disease. Endothelial dysfunction (ED) represents a preclinical stage of atherosclerosis. In general population ED correlated with traditional CV risk factors and was superior to them in predicting future CV events. In...
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GridEngine Reporting Tool
Rožek, František ; Chalupníček, Kamil (referee) ; Kašpárek, Tomáš (advisor)
The aim of this work is to build a tool that will reflect the utilization of the computing cluster, built on Grid Engine technology. Data are processed using PHP and Shell scripts and then stored in MySQL, or RRD databases. The work created a system that handles huge amounts of data and provides a comprehensive view on the utilization of the entire cluster, but also its specific components, or statistics of individual users. Created solution provides current and long-term data. The result of this work allows you to watch computing cluster from a single tool, which was not possible before.
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Linux VPN Performance and Optimization
Pokorný, Fridolín ; Michal, Bohumil (referee) ; Kašpárek, Tomáš (advisor)
Tato práce se zabývá analýzou stávajících a aktivních VPN řešení, jejich výkonu a slabých stránek. Výsledkem práce je jaderný modul pro Linux, který implementuje datový přenos pomocí protokolů TLS a DTLS na základě konfigurace ustanoveného spojení v chráněném režimu. Primárním cílem bylo odstranit datové kopie a změny kontextu z chráněného režimu do režimu jádra během datových přenosů ve VPN řešeních založených na protokolech TLS a DTLS. Práce analyzuje cenu těchto operací a na základě analýz lokalizuje další kroky nutné k využití implementovaného jaderného modulu ve VPN řešeních. Práce se dále zabývá analýzou dalších možných využití implementovaného jaderného modulu mimo VPN řešení.
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FreeIPA - URI Based Access Management
Hellebrandt, Lukáš ; Michal, Bohumil (referee) ; Kašpárek, Tomáš (advisor)
Cílem práce je navržení a implementace řízení přístupu na základě URI požadovaného zdroje. Pro implementaci bylo jako základ použito rozšíření Host Based Access Control v nástroji pro správu identit FreeIPA. Zároveň bylo třeba rozšířit související infrastrukturu, především program SSSD. Jako příklad aplikace využívající HBAC na základě URI byl implementován autorizační modul pro Apache HTTP Server. Zásadním řešeným problémem byl návrh infrastruktury pro komunikaci nezbytných parametrů a návrh strategie vyhodnocení HBAC pravidel definujících přístupová práva. Kompletní řešení bylo předvedeno na příkladu zabezpečení instance webové aplikace Wordpress.
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Unix Tools for Application and System Profiling
Dressler, David ; Chalupníček, Kamil (referee) ; Kašpárek, Tomáš (advisor)
The main goal of this thesis was to demonstrate usage of tools for application and system profiling. Initially, these tools was found and studied. They was also divided into categories according to their purpose. After that, these tools was compared according to their complexity of use and invasiveness. As the result of this comparison, these tools was divided into three groups, that express measure of complexity and invasiveness. As technology, used for creating models, was chosen Apache server and NFS server. Virtualization by hyper-v technology was used for putting these models into operation. There was created four virtual machines. Fist one for Apache server, another one for NFS server. Third was for mirroring content of Apache server and the last one for load generation. The last part of this thesis was to demonstrate usage of found tools on the created models.
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Comparison of Parallel File Systems
Pazdera, Michal ; Michal, Bohumil (referee) ; Kašpárek, Tomáš (advisor)
The goal of this thesis was to explore several parallel file systems, and to evaluate their performance under various conditions. The main focus of this assessment were read and write speeds in different workloads, the reliability of each system, and also their ability to protect from data loss. Initially, this thesis introduces eight of the most commonly used parallel file systems. From these, three were selected for further testing: Lustre, GlusterFS, and CephFS. To be able to evaluate their performance accurately, a suite of automated tests was developed. These benchmarks were run for each individual file system in our testing lab. The final part of this work evaluates the results and discusses the features of each of the file systems and their suitability for particular workloads.
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