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35 lines
1.2 KiB
35 lines
1.2 KiB
From 90441c4476481e4e05edacf44903aeac2feecd6d Mon Sep 17 00:00:00 2001 |
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From: Vratislav Podzimek <vpodzime@redhat.com> |
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Date: Wed, 13 Nov 2013 13:20:39 +0100 |
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Subject: [PATCH] Run 'xz' and 'lzma' with multiple threads |
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This speeds up compression a lot on multicore systems. |
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https://bugzilla.redhat.com/show_bug.cgi?id=1029786 |
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[Edited-by: Harald Hoyer: use getconf for cpu_count] |
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--- |
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dracut.sh | 6 ++++-- |
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1 file changed, 4 insertions(+), 2 deletions(-) |
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diff --git a/dracut.sh b/dracut.sh |
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index b03522bf..59d3e4b2 100755 |
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--- a/dracut.sh |
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+++ b/dracut.sh |
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@@ -693,12 +693,14 @@ stdloglvl=$((stdloglvl + verbosity_mod_l)) |
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# eliminate IFS hackery when messing with fw_dir |
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fw_dir=${fw_dir//:/ } |
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+cpu_count=$(getconf _NPROCESSORS_ONLN) |
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+ |
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# handle compression options. |
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[[ $compress ]] || compress="gzip" |
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case $compress in |
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bzip2) compress="bzip2 -9";; |
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- lzma) compress="lzma -9";; |
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- xz) compress="xz --check=crc32 --lzma2=dict=1MiB";; |
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+ lzma) compress="lzma -9 ${cpu_count:+-T$cpu_count}";; |
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+ xz) compress="xz --check=crc32 --lzma2=dict=1MiB ${cpu_count:+-T$cpu_count}";; |
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gzip) compress="gzip -9"; command -v pigz > /dev/null 2>&1 && compress="pigz -9";; |
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lzo) compress="lzop -9";; |
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lz4) compress="lz4 -9";;
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