All Questions
16
questions
-2
votes
1
answer
106
views
CPU and its operations
The 3 operations performed by a CPU are:
Transfer of data between memory and I/O
Logical and Arithmetical functions
Program flow through simple decisions
I dont understand what the 3rd operation is ...
- 107
2
votes
1
answer
1k
views
why keyboard input lags while using Zoom app
Every time I am using Zoom App or Google Meet, The keyboard input is delayed terribly (about 3s+) while typing in any kind of application.
I tried to reinstall Zoom again, deactivate my antiVirus (...
- 21
1
vote
1
answer
1k
views
Find out which files a process is writing to
I have this very annoying problem with Firefox for months where its CPU usage jumps to over 24% after a while when idle. Any official troubleshooting has lead to no positive results (tried to reset, ...
- 111
-2
votes
1
answer
670
views
Why does the RTX IO in the Nvidia GeForce RTX 30 Series use any CPU at all even though the information flow from the storage to the GPU?
I saw in the 2020-09-01 Official Launch Event for the NVIDIA GeForce RTX 30 Series that the RTX IO in the Nvidia GeForce RTX 30 Series allows the GPU to directly access the storage (SSD) without ...
- 21.8k
0
votes
1
answer
619
views
Is it possible to calculate theoretical i/o throughput of CPU?
I have machine with i7-2600K and I'm turning it into storage server. It's using P67 chipset which uses 20 Gb/s DMI interface to CPU. There are also pcie x8/x8 slots on board wired directly to CPU. I ...
- 820
-1
votes
2
answers
296
views
What is a computation period? [closed]
In my textbook Operating Systems: Internals and Design Principles (Seventh Edition) by William Stallings I am confused by what the first problem (#2.1) on page 104 means by "period". Here is the ...
- 437
1
vote
0
answers
434
views
How can I measure disk I/O waiting time for an active CPU?
There are already many tools to measure the % of the CPU waiting time during I/O operations, like dstat. Nevertheless, I am looking for a way to measure the waiting time % of the active cores.
In ...
- 193
0
votes
1
answer
93
views
What limits writing to 2 SSD drives at the same time
I'm trying to understand about IO and CPU cores and have gotten myself confused.
Does writing to 2 SSD drives depend on the number of cores? In my mind, if it's a single core process then the ...
- 1,943
3
votes
3
answers
1k
views
Does an IO port address belong to RAM?
I have been using Linux (Ubuntu). To communicate with IO devices, IO port addresses are used. For example, 0x378 is an address for a parallel port.
Is an IO port address an actual RAM address? If it'...
- 157
0
votes
3
answers
1k
views
Find which process uses on average the most CPU, Memory and IO on Windows 7
I'd like a way to monitor processes on Windows 7 for average CPU, Memory and IO since last boot.
I would love it if it was a nice UI friendly tool that could sort processes by Average CPU, Average ...
- 157
26
votes
3
answers
33k
views
Difference between port mapped and memory mapped access?
Can anyone explain what's the difference between port mapping and memory mapping, and what having both accomplishes? Why is there port mapped, how does it differ in structure from memory maps, and is ...
user291288
3
votes
5
answers
5k
views
How can RAM contain a "memory map" if RAM is unaware of the overall system?
This question concerns hardware more than software. Basically, citing from this article on memory maps, it says that:
In computer science, a memory map is a structure of data (which usually resides ...
user274686
7
votes
1
answer
16k
views
High Disk I/O and CPU usage of System Process in "System Volume Information"
I've a problem with high disk IO and cpu usage from the system process. With the performance monitor I can see that it writes and reads about 100MB/s froM "System Volume Information".
I tried to get ...
- 466
0
votes
1
answer
885
views
performance monitoring
I want to monitor CPU usage, disk read/write usage for a particular process, say ./myprocess.
To monitor CPU top command seems to be a nice option and for read and write iotop seems to be a handy one....
- 287
3
votes
2
answers
47
views
Is the XP VMM a bottleneck on a multi core machine?
I have a dual Xeon hex core machine running an IO intensive application. (WinXP 32) I am seeing a hardware driver (1/2 user mode, 1/2 kernel, streaming data) that is using 6k delta page faults per ...
- 141