* [committed] Improve handling of running into both low-mem and max die-limits
@ 2019-01-01 0:00 Tom de Vries
0 siblings, 0 replies; only message in thread
From: Tom de Vries @ 2019-01-01 0:00 UTC (permalink / raw)
To: dwz, jakub
Hi,
If both the low-mem die-limit as well as the max die-limit are triggered, we
find out about the low-mem die-limit during counting, and about the max
die-limit during parsing in low-mem mode:
...
$ dwz cc1 -o 1 -l1000 -L10000000 --devel-trace
Compressing 1
Counting DIEs
Hit low-mem die-limit
Compressing 1 in low-mem mode
htab: off_htab allocation
size: 131071
dwz: cc1: Too many DIEs, not optimizing
htab: off_htab final
size: 2097143
elements: 427544, occupancy: 0.203870
searches: 1985541, collisions: 0.602202
...
Fix this such that we find out about both limits during counting:
...
$ dwz cc1 -o 1 -l1000 -L10000000 --devel-trace
Compressing 1
Counting DIEs
Hit low-mem die-limit
dwz: cc1: Too many DIEs, not optimizing
...
Committed to trunk.
Thanks,
- Tom
Improve handling of running into both low-mem and max die-limits
2019-11-26 Tom de Vries <tdevries@suse.de>
* dwz.c (try_debug_info): Keep going after hitting low-mem die-limit,
if we might hit the max die-limit.
---
dwz.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/dwz.c b/dwz.c
index d5e477b..4e42062 100644
--- a/dwz.c
+++ b/dwz.c
@@ -4933,6 +4933,7 @@ try_debug_info (DSO *dso)
unsigned int ndies;
unsigned ret = 1;
int kind = DEBUG_INFO;
+ bool low_mem_die_limit_hit = false;
if (tracing)
fprintf (stderr, "Counting DIEs\n");
@@ -5032,8 +5033,14 @@ try_debug_info (DSO *dso)
{
if (tracing)
fprintf (stderr, "Hit low-mem die-limit\n");
- ret = 2;
- goto fail;
+ if (estimate_nr_dies () > max_die_limit)
+ /* Keep going, we still might hit the max die-limit. */
+ low_mem_die_limit_hit = true;
+ else
+ {
+ ret = 2;
+ goto fail;
+ }
}
ndies++;
t = htab_find_with_hash (abbrev, &tag, tag.entry);
@@ -5047,7 +5054,10 @@ try_debug_info (DSO *dso)
}
}
- ret = 0;
+ if (low_mem_die_limit_hit)
+ ret = 2;
+ else
+ ret = 0;
fail:
if (abbrev)
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2019-01-01 0:00 [committed] Improve handling of running into both low-mem and max die-limits Tom de Vries
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