Imagine you set up your root filesystem to be btrfs with Ubuntu 14.10 defaults (one subvolume for / and one for /home) and you want to compress and deduplicate as much as possible. Which directories should be managed as a proper subvolume and disabled for compression? The two targets “compress as much as possbile” and … Read more
Is there any GUI available in Ubuntu which shows detailed CPU usage, including L1/L2 cache usage? So that while running a custom program, I can monitor the CPU utilization in detail. The default system monitor only shows the overall cpu utilization, but I’d like to also monitor the cache utilization / usage, and see how … Read more
I need to know about Run Queue in AIX and how to find the bottleneck of Run queue. what is the threshold value for Run Queue length. Kindly guide me on this. Answer VMSTAT r (runqueue) The runqueue value shows the number of tasks executing and waiting for CPU resources. When this number exceeds the number … Read more
In my computer I only allocated half of my hard disk space for usage; other space remains un-allocated. I wonder: will this decrease or improve my CPU performance? My assumption was if I provide low disk space we can get higher performance because of actual scan area is small. Or is there any mapping mechanism … Read more
I have a problem with very high hard drive usage. Computer of my colleague (Sony VAIO) was working very slowly, it had Windows 10 Technical Preview, so I had to reinstall system. I installed Windows 8 and after installing and updating to 8.1, I noticed very high hard drive usage in Task Manager (almost all … Read more
I’m going to buy a new computer, and I’d want to know (in terms of performance) which option is better. Obviously, the best idea is to combine them (SSD for the OS and RAID0 for the data). However, I wouldn’t want to spend lots of money in storage. The future PC is going to be … Read more
I have inherited a server with some performance issues. It is running node js, nginx, basic MEAN stack. (DB on another server though) Whenever I copied a file (log file with size of around 150MB) or vim a file with that size, the output of “iostat -x 1” will be like below Device: rrqm/s wrqm/s … Read more
I have a hierarchy of folders (millions of them) and I want to delete the parent node. It’s OK and it gets deleted. My CPU usage becomes 100% on all logical cores, but the memory doesn’t complain and won’t be increased. I use command line’s rmdir DirPath /s command for this. My problem is that, … Read more
EDIT Dec 2, 2015 – corrected question to state that it’s Win 10 to Win 7, not Win 7 to Win 7. When using remote desktop to connect from a Windows 10 computer to a Windows 7 computer, the speed of interacting slows down substantially within an hour of being connected and actively using it … Read more
I’m looking into upgrading my PC, but I’m a bit confused about ram speeds. This is my current setup. Motherboard: Asus p6x58d premium CPU: Intel Bloomfield i7 930 DDR3 RAM: Corsair CM3x2G1600C9 (3 x 2GB, in triple-channel 3/6 slots) The issue is that there seems to be conflicting information about what ram speeds my current … Read more
