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Speed up csv compression on SMP machines #1085

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Merged
stejskalleos merged 1 commit into from
Jul 10, 2026
Merged

Speed up csv compression on SMP machines #1085

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10 changes: 9 additions & 1 deletion definitions/features/foreman_tasks.rb
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
require "etc"

class Features::ForemanTasks < ForemanMaintain::Feature
MIN_AGE = 30
TIMEOUT_FOR_TASKS_STATUS = 300
Expand Down Expand Up @@ -177,7 +179,13 @@ def export_csv(sql, file_name, state)
f.write(csv_output)
f.close
end
execute("bzip2 #{filepath} -c -9 > #{filepath}.bz2")

# only if pbzip2, use max 8 threads, but at least 1 thread
cpu_count = Etc.nprocessors
threads = [[cpu_count / 2, 1].max, 8].min

compressor = system("which pbzip2 >/dev/null 2>&1") ? "pbzip2 -p#{threads}" : "bzip2"
execute("nice -n 10 #{compressor} #{filepath} -c -9 > #{filepath}.bz2")
FileUtils.rm_rf(filepath)
end

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