http://ocw.cs.pub.ro/courses/ 2026-04-28T14:56:58+03:00 http://ocw.cs.pub.ro/courses/ http://ocw.cs.pub.ro/courses/lib/tpl/arctic/images/favicon.ico text/html 2026-03-24T12:23:58+03:00 http://ocw.cs.pub.ro/courses/ep/labs/04/contents/tasks/ex1?rev=1774347838&do=diff 01. [10p] Valgrind Dynamic analysis tools can observe a running process and report memory-related issues that static analysis would miss entirely. In this exercise you will use Valgrind to detect memory leaks in a small C program -- and get a first taste of the dynamic instrumentation concept that will be developed further in Task 04 with Intel Pin. text/html 2025-02-11T23:36:30+03:00 http://ocw.cs.pub.ro/courses/ep/labs/04/contents/tasks/ex2?rev=1739309790&do=diff 02. [20p] Swap space [10p] Task A - Swap File First, let us check what swap devices we have enabled. Check the NAME and SIZE columns of the following command: $ swapon --show No output means that there are no swap devices available. If you ever installed a Linux distro, you may remember creating a separate swap partition. This, however, is only one method of creating swap space. The other is by adding a swap file. Run the following commands: text/html 2026-04-02T13:56:39+03:00 http://ocw.cs.pub.ro/courses/ep/labs/04/contents/tasks/ex3?rev=1775127399&do=diff 03. [30p] Kernel Samepage Merging KSM is a page de-duplication strategy introduced in kernel version 2.6.32. In case you are wondering, it's not the same thing as the file page cache. KSM was originally developed in tandem with KVM in order to detect data pages with exactly the same content and make their page table entries point to the same physical address (marked Copy-On-Write.) The end goal was to allow more VMs to run on the same host. Since each page must be scanned for identical content,… text/html 2026-03-24T13:25:25+03:00 http://ocw.cs.pub.ro/courses/ep/labs/04/contents/tasks/ex4?rev=1774351525&do=diff 04. [40p] Intel PIN Broadly speaking, binary analysis is of two types: * Static analysis - used in an offline environment to understand how a program works without actually running it. * Dynamic analysis - applied to a running process in order to highlight interesting behavior, bugs or performance issues. text/html 2026-03-03T10:55:26+03:00 http://ocw.cs.pub.ro/courses/ep/labs/04/contents/tasks/ex5?rev=1772528126&do=diff 05. [10p] Feedback Please take a minute to fill in the feedback form for this lab.