forked from pool/memory-constraints
27 lines
1.1 KiB
Plaintext
27 lines
1.1 KiB
Plaintext
#
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# Macros for memory constraints on buildjobs.
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# If you happen to have HUGE packages sometimes you need to do
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# crazy magic in order to make sure it is most of the time building
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# rather than just giving you OOM
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#
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# m: memory limit in Bs per core; default is 1000000
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%limit_build(m:) \
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_threads="`/usr/bin/getconf _NPROCESSORS_ONLN`"
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_core_memory="%{-m:%{-m*}}%{!-m:1000000}"
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echo "Available memory:" \
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cat /proc/meminfo \
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echo "System limits:" \
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ulimit -a \
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echo "System jobs: $_threads" \
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if test "$_threads" -gt 1 ; then \
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mem_per_process="$_core_memory" \
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max_mem=$(awk '/MemTotal/ { print $2 }' /proc/meminfo) \
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max_jobs="$(($max_mem / $mem_per_process))"
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test "$_threads" -gt "$max_jobs" && $_threads="$max_jobs" && echo "Warning: Reducing number of jobs to $max_jobs because of memory limits" \
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test "$_threads" -le 0 && $_threads=1 && echo "Warning: Do not use the parallel build at all becuse of memory limits" \
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fi \
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%global jobs $_threads
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%global _smp_mflags -j$_threads
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%{nil}
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