imrcpan/freebsd
1
0 Fork 0
mirror of https://github.com/freebsd/freebsd-src.git synced 2026-10-28 11:25:21 +01:00
Code Issues Packages Projects Releases Wiki Activity

arcstat: prevent ZeroDivisionError when L2ARC becomes empty

Browse Source 
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Richard Yao <[email protected]>
Reviewed-by: Alexander Motin <[email protected]>
Reviewed-by: George Melikov <[email protected]>
Signed-off-by: Ameer Hamza <[email protected]>
Closes #17348
This commit is contained in:
Ameer Hamza authored and GitHub committed 2025-05-19 16:27:24 -07:00
1 parent 841be1d049
commit f0baaa329a
1 file changed
+7 -6
Download Patch File Download Diff File Expand all files Collapse all files
cmd/arcstat.in
+7 -6
View File
@@ -735,13 +735,14 @@ def calculate():
v[group["percent"]] if v[group["percent"]] > 0 else 0
if l2exist:
l2asize = cur["l2_asize"]
v["l2hits"] = d["l2_hits"] / sint
v["l2miss"] = d["l2_misses"] / sint
v["l2read"] = v["l2hits"] + v["l2miss"]
v["l2hit%"] = 100 * v["l2hits"] / v["l2read"] if v["l2read"] > 0 else 0
v["l2miss%"] = 100 - v["l2hit%"] if v["l2read"] > 0 else 0
v["l2asize"] = cur["l2_asize"]
v["l2asize"] = l2asize
v["l2size"] = cur["l2_size"]
v["l2bytes"] = d["l2_read_bytes"] / sint
v["l2wbytes"] = d["l2_write_bytes"] / sint
@@ -751,11 +752,11 @@ def calculate():
v["l2mru"] = cur["l2_mru_asize"]
v["l2data"] = cur["l2_bufc_data_asize"]
v["l2meta"] = cur["l2_bufc_metadata_asize"]
v["l2pref%"] = 100 * v["l2pref"] / v["l2asize"]
v["l2mfu%"] = 100 * v["l2mfu"] / v["l2asize"]
v["l2mru%"] = 100 * v["l2mru"] / v["l2asize"]
v["l2data%"] = 100 * v["l2data"] / v["l2asize"]
v["l2meta%"] = 100 * v["l2meta"] / v["l2asize"]
v["l2pref%"] = 100 * v["l2pref"] / l2asize if l2asize > 0 else 0
v["l2mfu%"] = 100 * v["l2mfu"] / l2asize if l2asize > 0 else 0
v["l2mru%"] = 100 * v["l2mru"] / l2asize if l2asize > 0 else 0
v["l2data%"] = 100 * v["l2data"] / l2asize if l2asize > 0 else 0
v["l2meta%"] = 100 * v["l2meta"] / l2asize if l2asize > 0 else 0
v["grow"] = 0 if cur["arc_no_grow"] else 1
v["need"] = cur["arc_need_free"]