Ensure arc_size_break is filled in arc_summary.py
Use mfu_size and mru_size pulled from the arcstats kstat file to calculate the mfu and mru percentages for arc size breakdown. Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: AndCycle <andcycle@andcycle.idv.tw> Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov> Closes #5526 Closes #6770
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@ -185,7 +185,8 @@ def get_arc_summary(Kstat):
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# ARC Sizing
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arc_size = Kstat["kstat.zfs.misc.arcstats.size"]
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mru_size = Kstat["kstat.zfs.misc.arcstats.p"]
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mru_size = Kstat["kstat.zfs.misc.arcstats.mru_size"]
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mfu_size = Kstat["kstat.zfs.misc.arcstats.mfu_size"]
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target_max_size = Kstat["kstat.zfs.misc.arcstats.c_max"]
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target_min_size = Kstat["kstat.zfs.misc.arcstats.c_min"]
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target_size = Kstat["kstat.zfs.misc.arcstats.c"]
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@ -230,27 +231,14 @@ def get_arc_summary(Kstat):
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]
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output['arc_size_break'] = {}
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if arc_size > target_size:
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mfu_size = (arc_size - mru_size)
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output['arc_size_break']['recently_used_cache_size'] = {
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'per': fPerc(mru_size, arc_size),
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'num': fBytes(mru_size),
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}
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output['arc_size_break']['frequently_used_cache_size'] = {
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'per': fPerc(mfu_size, arc_size),
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'num': fBytes(mfu_size),
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}
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elif arc_size < target_size:
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mfu_size = (target_size - mru_size)
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output['arc_size_break']['recently_used_cache_size'] = {
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'per': fPerc(mru_size, target_size),
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'num': fBytes(mru_size),
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}
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output['arc_size_break']['frequently_used_cache_size'] = {
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'per': fPerc(mfu_size, target_size),
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'num': fBytes(mfu_size),
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}
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output['arc_size_break']['recently_used_cache_size'] = {
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'per': fPerc(mru_size, mru_size + mfu_size),
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'num': fBytes(mru_size),
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}
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output['arc_size_break']['frequently_used_cache_size'] = {
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'per': fPerc(mfu_size, mru_size + mfu_size),
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'num': fBytes(mfu_size),
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}
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# ARC Hash Breakdown
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hash_chain_max = Kstat["kstat.zfs.misc.arcstats.hash_chain_max"]
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