Repository navigation
Too many open files #1466
Description
Hi,
I'm still seeing IOError: [Errno 24] Too many open files: even though I think the issue was resolved in #798 and #791. Should I still be getting this issue on linux? Is my usage incorrect or is there still an underlying issue?
Info:
Centos 5.8 (Final) - 2.6.18-308.16.1.el5 #1 SMP Tue Oct 2 22:01:37 EDT 2012 i686 i686 i386 GNU/Linux
Python 2.7.3 (default, Nov 1 2012, 08:11:26) - Compiled from source
Matplotlib version = '1.1.1'
version__numpy = '1.4'
Traceback:
Traceback (most recent call last): File "voicetest.py", line 702, in <module> File "voicetest.py", line 698, in main File "voicetest.py", line 106, in controller File "voicetest.py", line 649, in run File "voicetest.py", line 508, in recordResults File "/root/workspaces/voicetest/voiceanalysis.py", line 116, in PlotVoice File "/usr/local/lib/python2.7/site-packages/matplotlib/pyplot.py", line 471, in savefig File "/usr/local/lib/python2.7/site-packages/matplotlib/figure.py", line 1185, in savefig File "/usr/local/lib/python2.7/site-packages/matplotlib/backend_bases.py", line 2021, in print_figure File "/usr/local/lib/python2.7/site-packages/matplotlib/backends/backend_agg.py", line 474, in print_png IOError: [Errno 24] Too many open files: 'logs/20121108_175128/test_1011/origcall.png'
Code Snippet:
Gets call many times during runtime. Voice stream hands back 160*s16s for each iteration.
def PlotVoice(voice, prefix, samplefreq=8000.0):
# Organise the voice stream
v = []
for f in voice.voiceStream(-1):
v.extend(f)
# Amplitude vs. time
figure(figsize=(16.0, 10.0))
subplot(221)
title('Amplitude vs. Time')
xlabel('Time (s)')
ylabel('Amplitude (s16)')
ylim([-8000, 8000])
tm = arange(len(v))/samplefreq
plot(tm, v)
# Spectragram
subplot(222)
title('Spectragram')
specgram(v)
# FFT
subplot(223)
title('FFT')
n = len(v) # length of the signal
k = arange(n)
T = n/samplefreq
frq = k/T # two sides frequency range
frq = frq[range(n/2)] # one side frequency range
Y = fft(v)/n # fft computing and normalization
Y = Y[range(n/2)]
plot(frq,abs(Y),'r') # plotting the spectrum
xlabel('Freq (Hz)')
ylabel('|Y(freq)|')
savefig(prefix)
close()
Activity
pelson commented on Nov 9, 2012
@cgohlke and @mdboom might know more, but I'm not sure the commit 4cb2aaa got back ported to v1.1.1. Are you in a position to try the new v1.2.0 release as I'd expect it to work there.
Sorry to be one of those people who's response is "Ah, yes, fixed in <replace with latest version>.". 😄
ivanov commented on Nov 10, 2012
@hankhank also, do check your ulimit -n and compare it to the number that you get from cat /proc/sys/fs/file-max. If cat /proc/sys/fs/file-max ends up being a bigger number (chances are, it is), you can set a higher number via ulimit -n XXXXX. Read this forum post for more details, or here's a more concise description from the confluence project.
hankhank commented on Nov 12, 2012
It seems as though the issue is fixed in 1.2.0. Quite easily upgraded to the latest using pip.
Thanks for the help guys
pelson commented on Nov 13, 2012
Cool. Glad it helped @hankhank . (on the plus side, you get all the cool new features of 1.2.0 too!) 😄