Python – IOError: [Errno 13] Permission denied:
I’m getting IOError: [Errno 13] Permission denied and I don’t know what is wrong wit this code.
io
What’s the difference between io.open() and os.open() on Python?
I realised that the open() function I’ve been using was an alias to io.open() and that importing * from os would overshadow that.
Fastest save and load options for a numpy array
I have a script that generates two-dimensional numpy arrays with dtype=float and shape on the order of (1e3, 1e6). Right now I’m using np.save and np.load to perform IO operations with the arrays. However, these functions take several seconds for each array. Are there faster methods for saving and loading the entire arrays (i.e., without making assumptions about their contents and reducing them)? I’m open to converting the arrays to another type before saving as long as the data are retained exactly.
How to update/modify an XML file in python?
I have an XML document that I would like to update after it already contains data.
System lags when doing large R/W operations on external disks
I am having some issues with system-wide latency/lagging when doing large disk imaging operations on an Ubuntu 18.04 system. Here’s the system specs:
Measure pipe throughput in the shell
There is a shell command that allows you to measure how fast the data goes through it, so you can measure the speed of output of commands in a pipe. So instead of:
How can I limit the output speed of stdout?
I’m running CentOS 5.7 and I have a backup utility that has the option of dumping its backup file to stdout. The backup file is rather large (multiple gigabytes). The target is an SSHFS filesystem. To ensure that I don’t hog the bandwidth and degrade the performance of the network, I would like to limit the speed with which data is written to the “disk”.
-bash: /usr/sbin/useradd: Input/output error — What does this mean?
Today, on my Centos server I tried to add a user but got the following error:
How can I monitor disk I/O in a particular directory?
I’ve got a few processes with a known name that all write to files in a single directory. I’d like to log the number of disk block reads and writes over a period (not just file access) to test whether a parameter change reduces the amount of I/O significantly. I’m currently using iostat -d -p, but that is limited to the whole partition.
How to Throttle per process I/O to a max limit?
I’m looking for a way to limit a processes disk io to a set speed limit. Ideally the program would work similar to this: