Questions tagged [io]
IO or I/O is a common shorthand for referring to Input and Output
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No input devices working after startup
It's a normal day. I start my PC and try to login and BAM. Both my keyboard and mouse are not working. The devices itself are working fine (I can see the lights and stuff) but Windows somehow doesnt ...
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rm -rf takes a long time
I have a directory ./aggregated/ in which I have 7550 sub-dirs each containing 250 files. aggregated has 5.5GB in total.
I've tried deleting aggregated via rm -rf aggregated and it is taking hours. ...
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Poor and strange disk performance with VirtualBox (macOS host, Windows 10 guest)
I have VirtualBox 6.1.4 running on macOS Mojave. I'm working with a Windows 10 guest and it seems I have some performance problems with disks.
Testing with Aja System Test, on macOS I see numbers ...
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How is I/O encryption handled in modern systems? [closed]
First: I've struggled with the question on which stackexchange to post this question since it involves OS knowledge, hardware knowledge but probably also other CS fields. Suggestions for a better ...
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Problems accessing disk after IO tests
I am having problems when accessing my home folder, or generally anything that is on my HDD (I also have an SSD which seems to work fine) in my ubuntu (18.04.4) workstation.
:/$ df -h
Filesystem ...
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What's happening when I create a file in a "NTFS compressed" directory?
What's exactly happening? The files appear in the UI as compressed. Is it?
If so, is it written twice (like, uncompressed version of the new files is stored, as a buffer, and compressed then (so ...
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How to determine the duration for which a file was accessed/modified a program?
I would like to measure the speed of encryption performed by a utility on a Windows 10 box. Since there are no other ways in the utility itself to do this, I would like to know if I can determine how ...
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Process ntoskrnl.exe CPU usage jumps from 1% to over 40% precisely when using I/O
the problem occurs with the following system.
Device: Lenovo Ideapad 730S - Windows version: 10.0.18362 Build 18362
So ntoskrnl.exe is running just fine as long as all the USB-C ports are left free. ...
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how to install kernel module for blk_mq's io schedulers?
I have recently changed single queue to multi queue on my oracle server. This server is oracle linux 6.10 (4.1.12 kernel). I realize there is no any io scheduler for blk_mq alse show the /sys/block//...
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which io scheduler is recommended when use the blk_mq block layer with oracle database?
I have oracle Linux 6.10 with 4.1.12 kernel. I have recently moved from the legacy block to the blk_mq block. But all SCSI devices have show io scheduler is none. I have researched but I didn't find ...
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Cannot diagnose slow disk read speed, bottleneck, in Ubuntu
I have the same processes running on 2 (or more machines) for which we notice a massive slow down in disk i/o on some machines. The PCs have very similar hardware (I am happy to post dmidecode if ...
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Is it safe to use one server fd in multiple epoll event loops in different threads?
I have one server fd, and several threads with epoll event loop in each of them (different epoll_fd's). Is it safe, if I would add this fd to every event loop? Is it true, that only one of them would ...
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Pipe stdout of two programs to each other
I have two programs, one of them prints something first, they need to communicate with each other with their standard IO.
Is there a way in Bash to pipe stdout of two programs to each other? I know I ...
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Making MsMpEng.exe disk access be nice
MsMpEng.exe disk accesses are making my system unusable. Since this process is critical for system security, it is unreasonable to disable it. Moreover, as it is provided by the OS vendor, and ...
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Very high disk usage due to reading from CbsPersist...log
My personal laptop is Windows 7, Dell, 8 CPU Cores and 8GB of RAM.
It operates very slowly, especially when launching software, and I think especially when starting up (but not only).
Looking at ...
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