Multiple threads on ubuntu server
I am using Ubuntu 16.04 server. 88 threads, mem500Gb.
I used a program that supports multi-threads (number of threads=10)
In my case, it didn't use 10 CPUs. It is divided into a total of 10 processes and uses only 1 CPU.
I need any helps,,,
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OMG. I got the function now. Many thanks!
To me this seems like a problem outside of your CPUs. If there is significant disk reading, and especially if disk writing, that your program is doing, that will be a bottleneck. In such a case it doesn't matter that you have plenty of threads, as they will be running with less than 100% because the disk is not fast enough to provide enough data (or offload the data).
I suggest you try a smaller number, maybe 4-5 threads, and see if that will get them all to run at 100%.
By the way, running "regular" programs as a
rootuser is not good practice.Many thanks,
I'll decrease the threads to run tools, and check the Disk I/O problem in my ubuntu server.
Best,
Oh.
glanceswhich can help you to work out IO bottlenecks on linux.I'll do that from now on. I'll use
glancesand check it. Thank you!