Getting Cannot Allocate Memory Error

Getting cannot allocate memory error

Return Value

On success, mprotect() returns zero.
On error, -1 is returned, and errno is set appropriately.

Errors

EACCES
The memory cannot be given the specified access. This can happen, for example, if
you mmap(2) a file to which you have read-only access, then ask mprotect() to
mark it PROT_WRITE.

EFAULT
The memory cannot be accessed.

EINVAL
addr is not a valid pointer, or not a multiple of PAGESIZE.

ENOMEM
Internal kernel structures could not be allocated.
Or: addresses in the range [addr, addr+len] are invalid for the address space of
the process, or specify one or more pages that are not mapped.

Given the error message, you probably got an ENOMEM error, and looking at the error code, this does not necessarily mean that memory could not be allocated. You might have an invalid address range, or (most likely) you have pages that aren't mapped.

Don't try to protect such a big hunk of memory in one swell foop. Given how virtual memory works, the odds are just too high that some page in that huge chunk will not be mapped. You need to ensure that the page (pages) in question are mapped before calling mprotect.

When you are using system functions it is always a good idea to read the man page on that function. Then re-read it. The man pages can be a bit terse at times.

cannot allocate memory error

For anyone else who runs into this problem, it was a related recent issue in the golang issue

For all those affected, temporary workaround on Linux until it is
fixed properly can be one of following:

1. enable unconditional overcommit: sysctl -w vm.overcommit_memory=1
2. enable unconditional overcommit: sysctl -w vm.overcommit_memory=1 add swap to your host, with sysctl -w vm.swappiness=1 it will almost
   never going to be used, but it participates in calculations where
   Linux kernel decides to whether it can afford to satisfy allocation or
   not when default overcommit_memory=0 is in use

Google App Engine Deploy Error[12] Cannot allocate memory

The error cannot allocate memory usually appears if the number of files or the size of the content that is being uploaded is too big and the instance used to deploy your code runs out of memory.

The cause of this error might be the fact that you are using too many dependencies or static files.

Are you downloading static files ? I see this command tar_runtime_package tar before the error.

I would suggest to make sure you only use the necessary dependencies or choose to deploy your application on Google Cloud Run.

-bash: fork: Cannot allocate memory

I also faced this issue with my Ubuntu 14.04 desktop.

 free -m

Even these basic command showed Can't allocate memory error.
On investigating, found that system is using all the memory for Caching and is not freeing up memory.
This is called Cache Ballooning and solved this by clearing the cache.

Can't install modules, Cannot allocate memory error?

So I tested doing the exact same under a bigger (t1.small) instance and it worked fine. It looks like R does not play good with EC2 t1.micro instances.

The main difference between those 2 types of instances is that while the t1.micro has 0.6GB memory the t1.small has 1.7GB.

Couldn't test it under t2 type instances, they might perform better.

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