[Buildroot] [PATCH 1/1] support/scripts/pkg-stats: iterate over CVEs in streaming
peter at korsgaard.com
Thu Feb 20 20:31:59 UTC 2020
>>>>> "Thomas" == Thomas De Schampheleire <patrickdepinguin+buildroot at gmail.com> writes:
> Hi Titouan,
> El jue., 20 feb. 2020 a las 19:27, Titouan Christophe
> (<titouan.christophe at railnova.eu>) escribió:
>> The NVD files that are used to build the list of CVEs affecting
>> Buildroot packages are quite large (a few hundreds MB of json),
>> and cause the pkg-stats scripts to have a huge memory footprint
>> (a few GB with Python 2.7).
>> However, because we only need to iterate on CVE items one by one,
>> we can process them in streaming (ie decoding one CVE at a time
>> from the JSON representation). Because the json module from the
>> python standard library does not support such a mode of operation,
>> we switch to the third-party package ijson, which is compatible
>> with both Python 2 and Python3.
>> To run the script with these modifications, one should install
>> the ijson python package. This can be done with pip:
>> `pip install ijson`. On Debian based distributions, this can
>> also be done with the apt package manager:
>> `apt install python-ijson`.
>> Signed-off-by: Titouan Christophe <titouan.christophe at railnova.eu>
> This is _way_ better. In my test run observing top output, resident
> memory stayed around 50 MB.
> Reviewed-by: Thomas De Schampheleire <thomas.de_schampheleire at nokia.com>
> Tested-by: Thomas De Schampheleire <thomas.de_schampheleire at nokia.com>
Bye, Peter Korsgaard
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