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* [Bug symtab/29959] New: Investigate parallel reader scalability
@ 2023-01-03 14:04 tromey at sourceware dot org
2023-01-03 14:04 ` [Bug symtab/29959] " tromey at sourceware dot org
2023-01-03 14:05 ` tromey at sourceware dot org
0 siblings, 2 replies; 3+ messages in thread
From: tromey at sourceware dot org @ 2023-01-03 14:04 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=29959
Bug ID: 29959
Summary: Investigate parallel reader scalability
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: symtab
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
Target Milestone: ---
Created attachment 14548
--> https://sourceware.org/bugzilla/attachment.cgi?id=14548&action=edit
screen shot from gnuplot
I was curious about the scalability of the parallel reader,
so I built on gcc112, which reports 160 processors.
I made a file like:
maint time 1
file /tmp/gdb
Then I ran:
for j in $(seq 0 180); do echo ======= $j ; ./gdb/gdb -nh -quiet -iex "maint
set worker-threads $j" < S; done
I had it go over 160 just to see if that was interesting or not.
To my surprise, the results don't seem to improve past N=8 or so.
There are multiple possible explanations for this, but it would
be worthwhile to find out exactly why.
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2023-01-03 14:04 [Bug symtab/29959] New: Investigate parallel reader scalability tromey at sourceware dot org
2023-01-03 14:04 ` [Bug symtab/29959] " tromey at sourceware dot org
2023-01-03 14:05 ` tromey at sourceware dot org
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