Home > Cannot Allocate > Python Listdir Cannot Allocate Memory

Python Listdir Cannot Allocate Memory


Not the answer you're looking for? Another major improvement that you can introduce is to your filelen function. It ran out when allocating a buffer for os.lstat(), which is typically not that big. Notes on exception handling DirEntry.is_X() and DirEntry.stat() are explicitly methods rather than attributes or properties, to make it clear that they may not be cheap operations (although they often are), and check over here

I routinely use os.listdir to get directory listings with 50-100k files in them. Python Software Foundation Legal Statements Privacy Policy Help understanding these cake puns from a CNN Student News video How do pilots identify the taxi path to the runway? the jpeginfo commands that you run) and the -eopen will only show you open() calls as opposed to all system calls (which is what strace does by default). Source

Python Cannot Allocate Memory

You could catch the exception and retry (perhaps after a short delay) as you're already doing if jpeginfo fails, but it's hard to say how successful this strategy will be without Why is the 'You talking to me' speech from the movie 'Taxi Driver' so famous? Unfortunately it might need something of a Linux filesystem expert to figure out what's going on there, but looking at the sources for CIFS in the Linux kernel, I can see Initially they did not (see previous versions of this PEP and the scandir.py module), but Victor Stinner made a pretty compelling case on python-dev that following symlinks by default is a

What does "there lived here then" mean? because the check on d won't trigger ... What is a satisfactory result of penetration testing assessment? Oserror: [errno 12] Cannot Allocate Memory Odoo Re: "In createrepo, can you try..." I can't, because I've already patched python.

This will increase the speed of os.walk() very significantly (as mentioned above, by 2-20 times, depending on the system). Self.pid = Os.fork() "oserror: [errno 12] Cannot Allocate Memory" See more benchmarks here [1] . Not the answer you're looking for? this content Can floyd like bridge really make guitar out of tune when not blocked but not used Ballpark salary equivalent today of "healthcare benefits" in the US?

C++ calculator using classes Bhagavad Geeta 4.14 Can negative numbers be called large? Docker Oserror: [errno 12] Cannot Allocate Memory scandir() yields a DirEntry object for each file and sub-directory in path . With createrepo there would be a silent failure at least one time out of 20 (the repo files would be created listing no packages at all!) The cause: Python's os.listdir function Just before the loop the code is: if ((d = PyList_New(0)) == NULL) { closedir(dirp); PyMem_Free(name); return NULL; } ...and as far as I can see d is _only_ set to

Self.pid = Os.fork() "oserror: [errno 12] Cannot Allocate Memory"

Therefore, the test "if (errno != 0 && d != NULL)" is a correct test for "readdir encountered an error" -- as long as errno was set to 0 before readdir. asked 3 years ago viewed 1322 times active 3 years ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Linked 157 Get MD5 hash of big files in Python 12 Python Cannot Allocate Memory I then want to transfer them across a network and do analysis. Python Multiprocessing Cannot Allocate Memory Sebastian Nov 25 '13 at 6:16 I did see that link thank you.

Are there still systems around with a /bin/sh binary? http://amigasuperbit.com/cannot-allocate/python-popen-cannot-allocate-memory.html It lives on GitHub at benhoyt/scandir [3] . (The implementation may lag behind the updates to this PEP a little.) Note that this module has been used and tested (see "Use Are you crazy?" -- but I like to pretend that I live in the future, a brilliant, glowing place, where I have gigabytes of memory at my disposal, and don't need So of course, does os.listdir() from my python (Mac Python, version 2.5) script; it fails with OSError: [Errno 12] Cannot allocate memory: '.' People will say "Don't put that many files Python Memory Leaks

Or, for getting the total size of files in a directory tree, showing use of the DirEntry.stat() method and DirEntry.path attribute: def get_tree_size(path): """Return total size of files in given path See Ben Hoyt's July 2014 reply to the discussion summarizing this and detailing why he thinks the original PEP 471 proposal is "the right one" after all. RAM was already full. this content See PyPI package [5] .

asked 6 years ago viewed 1648 times active 6 years ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Linked 477 How to get line count cheaply in Python? Popen Cannot Allocate Memory Please turn Javascript on for the full experience. However, when a user requires fine-grained error handling, it may be desirable to catch OSError around all method calls and handle as appropriate.

bongo (bong0) wrote on 2011-11-26: #9 I have a similar error, though the error backtrace doesn't look exactly the same as in the original report: Traceback (most recent call last): File

Now I understand that I can catch this error and continue or retry etc but I'm curious as to why it is occurring in the first place and if catching and share|improve this answer answered Feb 2 '10 at 12:08 John Machin 52.1k569130 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Understanding Python fork and memory allocation errors Suggests using rfoo to circumvent the subprocess limitation of fork/clone and spawning child process and copy memory etc... Oserror: [errno 12] Cannot Allocate Memory Multiprocessing For example, dict.iterkeys() is just an iterator version of dict.keys() , but the objects returned are identical.

Do you get this repeatably? I'm also unsure about the patch: 1. Always calling os.lstat() on POSIX would not bring any speedup. have a peek at these guys If developers want "refresh" behaviour (for example, for watching a file's size change), they can simply use pathlib.Path objects, or call the regular os.stat() or os.path.getsize() functions which get fresh data

Terry (terry-kryogenic) wrote on 2011-11-05: #8 Interestingly, running against Python 2.7 on the same system resulted in memory usage of over 40MB but never exited prematurely with ENOMEM like it does which makes me worry about NFS. Deja Dup is crashing on making a copy of this backup due to > the length of the path name. > > Traceback (most recent call last): > File "/usr/bin/duplicity", line In the end there was not total agreement that the methods should follow symlinks, but there was basic consensus among the most involved participants, and this PEP's author believes that the

Guido van Rossum explicitly rejected pathlib.Path caching stat in the context of scandir here , making pathlib.Path objects a bad choice for scandir return values. I did wonder if the fact that jpeginfo seems to fail to find certain files on the first try could be related (and I suspect it is) but the error returned It will need some cleanup and more thorough testing before going into the standard library, as well as integration into posixmodule.c . How can I take a powerful plot item away from players without frustrating them?

If you can't solve the problem with CIFS then perhaps you could copy the files over to the Linux machine one at a time to be checked, or possibly in batches, Changed in apport: status: New → Invalid Kenneth Loafman (kenneth-loafman) wrote on 2013-04-27: #15 Closing this bug since it appears to be a packaging error, not a bug in duplicity. If it was really choking on the length of the filename, I would expect errno 36, ENAMETOOLONG. My main concern (likely erroneous) with paramiko was that I did a quick source code search and saw that it uses the subprocess module- though I don't know what for nor

github.com/torvalds/linux/blob/master/Documentation/sysctl/… –dstromberg Nov 21 '13 at 8:17 | show 6 more comments Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using How to capture disk usage percentage of a partition as an integer? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Also, because the exception-raising behaviour of the DirEntry.is_X methods matches that of pathlib -- which only raises OSError in the case of permissions or other fatal errors, but returns False if

This seems to this PEP's author neither as direct nor as Pythonic as try / except around a DirEntry.stat() call. C++ calculator using classes What is this line of counties voting for the Democratic party in the 2016 elections? So the consensus was that Windows wildcard support was a bad idea. I guess the problem is more of a low level thing and definitely specific to older distributions like Debian Lenny.

for (;;) { Py_BEGIN_ALLOW_THREADS ep = readdir(dirp); Py_END_ALLOW_THREADS if (ep == NULL) break; ... But errno 12 is ENOMEM, which means the kernel > ran out of memory...