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authorGravatar Victor Huesca <victor.huesca@bootlin.com>2019-08-01 17:12:44 +0200
committerGravatar Thomas Petazzoni <thomas.petazzoni@bootlin.com>2019-08-01 18:04:09 +0200
commit294fc3218c2e296ddfe905d795e3b99e4c0cc8f1 (patch)
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parent3938afe1b5f43a6ea915916cc2201adde13b4e39 (diff)
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support/scripts/pkg-stats: retrieve packages latest version using processes
The major bottleneck in pkg-stats is the time spent waiting for answers from remote servers. Two functions involve such communication with remote servers: - 'check_package_urls' which checks that each package upstream website is up, it is efficient due to the use of process-pools thanks to Matt Weber. - 'check_package_latest_version' which fetches the latest package version from release-monitoring, it uses a http-pool but runs sequentially. This patch extends the use of process-pools to 'check_latest_version'. Due to some limitations of multiprocess callbacks, this patch loses the overall progress of packages in favour of just the current package name. Runtimes for this function are ~3m vs ~25m for the linear version. Tested on an i7 7500U (2/4 cores/threads @3.5GHz) with 15ms ping. Note: There have already been work trying to parallelize this function using threads but there were a failure on some configurations [1]. This implementation rely on a dedicated module already in use on this script, so it's unlikely to see failure with this version. [1] http://lists.busybox.net/pipermail/buildroot/2018-March/215368.html Signed-off-by: Victor Huesca <victor.huesca@bootlin.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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