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Bug 410341 - 2x slower than xterm/konsole catting /dev/urandom
2x slower than xterm/konsole catting /dev/urandom
Status: RESOLVED OBSOLETE
Product: vte
Classification: Core
Component: general
0.15.x
Other Linux
: Normal normal
: ---
Assigned To: VTE Maintainers
VTE Maintainers
Depends on: vteparser
Blocks:
 
 
Reported: 2007-02-21 11:15 UTC by Chris Wilson
Modified: 2018-01-31 14:59 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Chris Wilson 2007-02-21 11:15:03 UTC 
Benchmark: time perf/random.sh

Local i386:-
g-t:         13.53user 6.22system 0:27.18elapsed 72%CPU 
xterm:        8.90user 4.54system 0:12.27elapsed 109%CPU
rxvt-unicode: 2.64user 0.24system 0:18.13elapsed 15%CPU
Excluding startup:-
g-t:          0.00user 4.77system 0:19.145elapsed
konsole:      0.00user 4.11system 0:09.182elapsed
xterm:        0.01user 4.12system 0:11.855elapsed

Remote ppc:-
g-t:         10.19user 9.00system 0:30.59elapsed 62%CPU
xterm:        8.35user 0.70system 0:14.45elapsed 62%CPU
Comment 1 Behdad Esfahbod 2007-11-28 13:42:21 UTC 
Yes, our font loading sucks.  Not sure why.  Is it still the case?  Can you profile a bit, see what we're doing?  Do those other terminals do font fallback too?
Comment 2 Christian Persch 2015-12-26 12:57:50 UTC 
Two runs of time perf/random.sh each:

xterm 303:
real    0m26.521s
user    0m0.027s
sys     0m3.510s

real    0m28.595s
user    0m0.014s
sys     0m3.511s


vte master:
real	0m26.543s
user	0m0.020s
sys	0m3.756s

real	0m24.105s
user	0m0.030s
sys	0m3.714s
Comment 3 Christian Persch 2018-01-31 14:55:02 UTC 
In my current testing, vte is taking only half the time xterm needs, and konsole is just a little faster than xterm. Closing as obsolete.