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silx view: Set max number of opened file at start-up #3545

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merged 1 commit into from Nov 4, 2021
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silx view: Set max number of opened file at start-up #3545

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15 changes: 15 additions & 0 deletions src/silx/app/view/main.py
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Expand Up @@ -86,6 +86,21 @@ def mainQt(options):
# Import most of the things here to be sure to use the right logging level
#

# Use max opened files hard limit as soft limit
try:
import resource
except ImportError:
_logger.debug("No resource module available")
else:
if hasattr(resource, 'RLIMIT_NOFILE'):
try:
hard_nofile = resource.getrlimit(resource.RLIMIT_NOFILE)[1]
resource.setrlimit(resource.RLIMIT_NOFILE, (hard_nofile, hard_nofile))
except (ValueError, OSError):
_logger.warning("Failed to retrieve and set the max opened files limit")
else:
_logger.debug("Set max opened files to %d", hard_nofile)

# This needs to be done prior to load HDF5
hdf5_file_locking = 'TRUE' if options.hdf5_file_locking else 'FALSE'
_logger.info('Set HDF5_USE_FILE_LOCKING=%s', hdf5_file_locking)
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