Questions tagged [io]

IO (or I/O) is an abbreviation for input/output, most commonly referring to disk input/output.

IO (or I/O) is an abbreviation for input/output, most commonly referring to disk input/output.

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how do I know if an SSD reaches its performance capability?

I was monitoring a new db server with SSD RAID-10 installed. It works fine for now but I was worrying someday it could reach its capability as the business goes on. So how can I know that before it's too late? I was thinking there are some…
yaoxing
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Apache2-server append a string to a JavaScript file before client receives the file

I never touched the Apache 'inner files', but now I need to add a string (that isn't static) to the end of some JavaScript files when serving them via Apache. What should I do / learn to achieve this? Where can I check for a request for a file…
funerr
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How to arrange 2 SSD with 2 SATA?

I like to have best io performance as well as good capaciyy and reliability out of a server that hosts a busy forum, which involves loads of static files download. I am wondering what is the best plan to format and use the disks given that the…
alfish
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Simulate some process IO with fio or other tool

Is there any way to track a specific process and get stats for disk IO such as queue depth, total reading/writing threads, percent of reads/writes and so on? The main goal is to use all that information to emulate IO activity with fio tool. Or maybe…
Maxim
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whats the difference between 1lane and 2lane with SATA-3 speeds?

I read the beauty of PCIe is that a designer can combine two, four, eight or sixteen of PCIe lanes into a single data port. 2.5 Gb/s PCIe×1 5 Gb/s PCIe×2 I have two sata 3 drives that I want to put into a RAID 0, just not sure how to check how…
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SSD I/O slows down system

My HDD was getting full, so I added a new SSD and tried moving files to it. For some reason, this bogs down the whole system to the point where it's not usable. This never happened with HDDs when copying/moving files from one (spinning) HDD to…
david
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Cloud server running slow

Can anyone help with this: One of our cloud servers is running slow and after running iotop I've noticed the below command running for nearly 2 hours, but I'm the only one who would run commands on this server. I haven't and there has been no…
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Serve 200 without reading the request

I have a system where Server receives large files from clients Files are unused and deleted immediately Clients cannot be updated to stop sending files There are a known number of clients (required number of threads is constant) The server must be…
twinlakes
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figuring out high load cause from top and iotop

What should i do if I want to prevent this high load. My website becomes slow when load is higher than 8. Please see iotop result too. top - 20:23:10 up 127 days, 3:22, 1 user, load average: 9.92, 9.87, 9.81 Tasks: 1031 total, 3 running, 1027…
Mehdi Azizi
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What are some options for acquiring a free realtime Linux distribution?

By realtime I mean something that can help with fast network I/O; Low-latency and high-throughput.
JohnPristine
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What buffer size should I use to maximize disk I/O bandwidth? (16Kb, 32Kb, 64Kb, etc.)

I am trying to write a file as fast as I can through a buffered FileChannel similar to a BufferedOutputStream. I am wondering what is the optimum chunk of data I should use per write call to maximize bandwidth? I am on Ubuntu Linux.
chrisapotek
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