Suppose the OS on your computer uses the Buddy system for memory management. Initially the system has a 1 megabyte (1024K) block of memory available. Show the result of each request/release via successive figures similar to the one illustrated in the lecture slides. A: Request 25 K B: Request 500 K C: Request 70 K D:Request 100 K E: Request 40 K Release A F: Request 20 K Release B After memory is allocated to process F, how much internal fragmentation exist in the system.

Suppose the OS on your computer uses the Buddy system for memory management. Initially the system has a 1 megabyte (1024K) block of memory available. Show the result of each request/release via successive figures similar to the one illustrated in the lecture slides. A: Request 25 K B: Request 500 K C: Request 70 K D:Request 100 K E: Request 40 K Release A F: Request 20 K Release B After memory is allocated to process F, how much internal fragmentation exist in the system.

Name: Suppose the OS on your computer uses the Buddy system for memorymanage
Uploaded: 2024-03-20T06:51:23.000Z
Channel: Bartleby
Description: Suppose the OS on your computer uses the Buddy system for memorymanagement. Initially the system has a 1 megabyte (1024K) block of memoryavailable. Show the result of each request/release via successive figures similar tothe one illustrated in the le

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter4: Processor Technology And Architecture

Section: Chapter Questions

Problem 2PE: If a microprocessor has a cycle time of 0.5 nanoseconds, what’s the processor clock rate? If the...

See similar textbooks

Similar questions

If a microprocessor has a cycle time of 0.5 nanoseconds, what’s the processor clock rate? If the fetch cycle is 40% of the processor cycle time, what memory access speed is required to implement load operations with zero wait states and load operations with two wait states?
IF= 220 ns ID = 125 ns EX (addition) = 250 ns EX (shift) = 120 ns EX (subtraction) = 220 ns MEM = 150 ns WB = 175 ns If we consider the above timing, how many stalls would be needed if we want to overcome the data hazard using Stalls and code scheduling? For executing One Iw instruction, how much longer will it take to execute the instruction with 5 stage pipelining compared to single cycle datapath? (only write the value, don't need to mention unit) If we want to execute 395 consecutive sll instructions with 5 stage pipelining what will be the total duration of execution (without any hazards)?
In a main memory-disk virtual storage system, the page size is 1KByte and the OPTIMAL algorithm is used for page replacements. A given program has been allocated three page frames in the main memory and it makes the following 16 memory references when it starts executing (the addresses are given in decimal):500, 2000, 2500, 800, 4000, 1000, 5500, 1500, 2800, 400, 5000, 700, 2100, 3500, 900, 2400 Fill in the contents of the three page frames after each memory reference in a table and calculate the hit ratio. Hint: denote by 'a' the page consisting of locations 0 through 1023 in memory. Similarly, b: 1024-2047, c: 2048-3071, d: 3072-4095, e: 4096-5119 and f: 5120-6143. Round to three decimal places.
A disk has a capacity of two tera-byte size. Say the file system uses a multi-level inode structure for locating the data blocks of afile.The inode stores pointers to data blocks, including a single indirect block, a double indirect block, and several direct blocks in the 64 B of available space.Now, it is given that the disk has a block size of 512 B. The maximum file size that can be stored in such a file system in MB (round off upto 2 decimal places).
Suppose a computer system uses 16-bit addresses for both its virtual and physical addresses. In addition, assume each page (and frame) has size 256 bytes. 8 bits are used for offset, 8 bits are used for page # and the max number of pages a process can have is 256. e. Translate the following virtual addresses to physical addresses, and show how you obtain the answers. (Hint: You do not need to convert hexadecimal numbers to decimal ones.) 0x0389 0xDF78 0x0245 0x8012 f) Now, suppose that the OS uses a two-level page table. Draw the page table. (Assume that frames 7 through 221 are free, so you can allocate space for the page table there.) In addition, suppose that the page-table directory storage comprises a whole number of consecutive full frames. (For examples: if the directory entry is 2 bytes, the entry’s storage comprises 1 frame; if the directory entry is 260 bytes, the entry’s storage comprises 2 consecutive frames.) g)What is the size of the two-level page table…
In a main memory-disk virtual storage system, the page size is 1KByte and the FIFO algorithm is used for page replacements. A given program has been allocated three page frames in the main memory and it makes the following 16 memory references when it starts executing (the addresses are given in decimal):500, 2000, 2500, 800, 4000, 1000, 5500, 1500, 2800, 400, 5000, 700, 2100, 3500, 900, 2400 Fill in the contents of the three page frames after each memory reference in a table and calculate the hit ratio. Hint: denote by 'a' the page consisting of locations 0 through 1023 in memory. Similarly, b: 1024-2047, c: 2048-3071, d: 3072-4095, e: 4096-5119 and f: 5120-6143. Round to three decimal places.
Please let me know if these are true or false! In multiprocessors with a shared physical main memory, an access to a word of main memory always takes about the same amount of time no matter which word is being accessed and by which processor: T/F? When reading data from a magnetic disk, the rotational latency increases linearly with the size of the request: T/F? SSD is faster to access than magnetic disk, but slower than DRAM main memory: T/F? The primary purpose of RAID is for data backups: T/F? Typically, data parallelism offers greater opportunities for achieving highly-parallel execution than does functional parallelism: T/F? In MIPS systems, one way to implement locks is with the MIPS test-and-set machine language instruction: T/F?
Create a memory mapping from the cache memory of 512 MB to the main memory of 4 GB using the four-way set associative approach with a block size of 1 MB. Consider that each memory location may be accessed using a byte address.
NOTE: "Exekveringstid(ms)" means execution time or burst time in milliseconds Assume that a system with a CPU at one time has the following processes queued in the CPU's READY queue: Calculate the waiting time for the seven processes: 1) If FCFS is being used 2) If LRU is being used 3) If RR with time quantum of 8ms
Consider a computer with N processors in a multiprocessor configuration. a. How many processes can be in each of the Ready, Running, and Blocked states at one time? b. What is the minimum number of processes that can be in each of the Ready, Running, and Blocked states at one time?
Consider a file system that uses inodes to represent files. Disk blocks are 8 KB in size, and a pointer to a disk block requires 8 bytes. This file system has 12 direct disk blocks, as well as 1 single and 1 double indirect disk blocks. What is the maximum size of a file that can be stored in this file system in GBs (round to the nearest integer)?
You have a byte-addressable virtual memory system with a two-entry TLB, a 2-way set-associative cache, and a page table for a process P. Assume cache blocks of 8 bytes and page size of 16 bytes. In the system below, main memory is divided into blocks, where each block is represented by a letter. Two blocks equal one frame. Given the system state as depicted above, Show the address format for virtual address 0x12 (specify field name and size) that would be used by the system to translate to a physical address and then translate this virtual address into the corresponding physical address. (Hint: Convert the address to its binary equivalent and divide it into the appropriate fields.) Explain how these fields are used to translate to the corresponding physical address.