Search results for "linux"
showing 10 items of 22 documents
Simurgh
2021
The availability of non-volatile main memory (NVMM) has started a new era for storage systems and NVMM specific file systems can support extremely high data and metadata rates, which are required by many HPC and data-intensive applications. Scaling metadata performance within NVMM file systems is nevertheless often restricted by the Linux kernel storage stack, while simply moving metadata management to the user space can compromise security or flexibility. This paper introduces Simurgh, a hardware-assisted user space file system with decentralized metadata management that allows secure metadata updates from within user space. Simurgh guarantees consistency, durability, and ordering of updat…
An Efficient NURBS Path Generator for a Open Source CNC
2014
In this paper a NURBS path generator (on the plane XY) is proposed to be developed for those CNC machine tools and robot which are Open Source or Opening Architecture. The goal is to use simple and efficient techniques to manufacture geometries which are very complex, whose main feature is the presence of free-form surfaces and contours. To reach this goal, the NURBS path generator has been optimized in order to enable the user to select among three different options to generate the tool path, using a specific parameter. The three options are respectively called “NURBS interpolation with constant increments of u parameter” (NICU), “NURBS interpolation with constant displacement increments b…
Identification and analysis of security risks of the Information system and website
2021
2ANOTĀCIJA Darba mērķis ir izanalizēt izplatītākos drošības riskus tīmekļvietnēm un informācijas sistēmām, nosakot tos, veikt ielaušanas testēšanu uz noteikto tīmekļvietni. Tēma ir īpaši aktuāla, jo mūsdienu pasaulē ar tehnoloģiju attīstību un arī Covid-19 laikā vie tnes arvien vairāk sāk sniegt tiešsaistes pakalpojumus. Tīmekļvietnes apstrādā un glabā lietotāju sensitīvo informāciju un nevar būt 100% droša,līdz ar ko krāpnieku interese pieaug. Darb ā ir izanalizētamūsdienas drošības situācija,statistika par tīmekļvietnēm, kā arī izmantojot OWASP datus ir noskaidroti visizplatītākie drošības riski un drošības līdzekļi pret tiem. Izmantojot informāciju par drošības riskiem,darba ietvaros ir …
Hyplets - Multi Exception Level Kernel towards Linux RTOS
2018
This paper presents the concept of a Multi-Exception level operating system. We add a hypervisor awareness to the Linux kernel and execute code in hyp exception level. We do that through the use of Hyplets. Hyplets are an innovative way to code interrupt service routines under ARM. Hyplets provide high performance, security, running time predictability, an RPC mechanism and a possible solution for the priority inversion problem. Hyplets uses special features of ARM8va hypervisor memory architecture.
The hyplet : Joining a Program and a Nanovisor for real-time and Performance
2020
This paper presents the concept of sharing a hyper-visor address space with a standard Linux program. In this work, we add hypervisor awareness to the Linux kernel and execute code in the HYP exception level through using the hyplet. The hyplet is an innovative way to code interrupt service routines and remote procedure calls under ARM. The hyplet provides high performance and run-time predictability. We demonstrate the hyplet implementation using the C programming language on an ARM8v-a platform and under the Linux kernel. We then provide performance measurements, use cases, and security scenarios. peerReviewed
Windows darbstaciju pieslēgšana pie Linux Samba servera
2016
Darba galvenais mērķis ir uzlabot neliela biroja datoru infrastruktūru un nodrošināt vienkāršas mājaslapas uzturēšanas iespējas. Birojā visiem darbiniekiem uz datoriem ir modernas Windows 7, 8.1 un 10 operētājsistēmas, bet nav nodrošināta nekāda iespēja apmainīties ar failiem bez ārējiem datu nesējiem. Kā arī birojā nav servera, līdz ar to visi lietotāji atrodas darba grupā nevis domēnā. Sekas tam ir, ka katrs darbinieks var strādāt tikai pie sava datora, un, datora iespējamo remontdarbu laikā, iespējas strādāt praktiski nav. Līdz ar to varētu tikt ieviests kopējs Linux serveris, kas nodrošinātu domēna, datņu servera un mājaslapas glabāšanas funkcijas. Pēc autora domām, šis risinājums ne ti…
LTSP-järjestelmän omaksuminen : oppilaitosten omaksumispäätökseen vaikuttavat tekijät
2007
Intertīkla protokola balss telefonijas infrastruktūras testu automatizācija nepārtrauktas integrācijas sistēmas ietvaros
2016
Kvalifikācijas darbā “Intertīkla protokola balss telefonijas infrastruktūras testu automatizācija nepārtrauktas integrācijas sistēmas ietvaros” tika izstrādāti testēšanas rīki, kas ļauj lietotājam simulēt servisu noturības testus un ērti tos integrēt tādās nepārtrauktās integrācijas platformās kā Jenkins. Testēšanas rīku kopums ir izstrādāts pēc spējās programmatūras izstrādes metodes - Scrum ar JavaScript, HTML5, CSS un Python valodu palīdzību un ir pieejama lietošanas instrukcija angļu valodā.
Analysis and description of an open source janitor project
2006
Masteroppgave i informasjons- og kommunikasjonsteknologi 2006 - Høgskolen i Agder, Grimstad The objective of this study is to describe the inside and impact of the Linux Kernel Janitor Project. To describe and discuss how such janitor activity can be useful for others is also an objective. The Linux Kernel Janitor Project is a project defined to perform maintenance of the Linux kernel source, often taking on tasks that nobody else will be doing. The patches produced by the janitors have been analysed and some of the effects and properties of the work the project has carried out are described. Analysis show that janitor activity reduces the amount of code while still keeping the same functio…
Hypervisor-Based White Listing of Executables
2019
We describe an efficient system for ensuring code integrity of an operating system (OS), both its own code and application code. The proposed system can protect from an attacker who has full control over the OS kernel. An evaluation of the system's performance suggests the induced overhead is negligible. peerReviewed