Simulation plot GUI slow with short simulation step duration
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
KiCad |
Fix Released
|
Low
|
Hal Gentz |
Bug Description
Application: kicad
Version: (2017-03-18 revision 98e3bfb)-master, release build
Libraries: wxWidgets 3.0.2
Platform: Linux 4.10.0-rc8+ x86_64, 64 bit, Little endian, wxGTK
- Build Info -
wxWidgets: 3.0.2 (wchar_t,wx containers,
Boost: 1.61.0
Curl: 7.50.1
KiCad - Compiler: GCC 6.2.0 with C++ ABI 1010
Settings: USE_WX_
The plot rendering and cursor zoom-in responsivity is unusably slow for a 1s simulation with 1us step duration. The corresponding Spice .listing is below. I'm interested in using such short step durations since it seems to be the only way I can get accurate results. I also tried to use the Spice max_step parameter in the .tran control OP like:
.tran 1m 1 0 1u
but it didn't seem to make a difference.
Circuit: KiCad schematic
KiCad schematic
1 : kicad schematic
2 : .global gnd
5114 : .model pn2222a npn (is=14.34f xti=3 eg=1.11 vaf=74.03 bf=255.9 ne=1.307 ise=14.34f ikf=.2847 xtb=1.5 br=6.092 nc=2 isc=0 ikr=0 rc=1 cjc=7.306p mjc=.3416 vjc=.75 fc=.5 cje=22.01p mje=.377 vje=.75 tr=46.91n tf=411.1p itf=.6 vtf=1.7 xtf=3 rb=10)
5138 : .model pn2907 pnp (is=650.6e-18 xti=3 eg=1.11 vaf=115.7 bf=231.7 ne=1.829 ise=54.81f ikf=1.079 xtb=1.5 br=3.563 nc=2 isc=0 ikr=0 rc=.715 cjc=14.76p mjc=.5383 vjc=.75 fc=.5 cje=19.82p mje=.3357 vje=.75 tr=111.3n tf=603.7p itf=.65 vtf=5 xtf=1.7 rb=10)
5428 : vv1 net-_q2-pad3_ 0 dc 8
5429 : rr1 net-_q2-pad3_ npnb 63k
5430 : rr2 npnb 0 5.6k
5431 : rr4 vout 0 200
5432 : cc1 vout npnb 22u
5433 : qq1 pnpb npnb 0 pn2222a
5434 : qq2 vout pnpb net-_q2-pad3_ pn2907
5435 : .save @vv1[i]
5436 : .save @rr1[i]
5437 : .save @rr2[i]
5438 : .save @rr4[i]
5439 : .save @cc1[i]
5440 : .save @qq1[ib]
5441 : .save @qq1[ic]
5442 : .save @qq1[ie]
5443 : .save @qq2[ib]
5444 : .save @qq2[ic]
5445 : .save @qq2[ie]
5446 : .save v(0)
5447 : .save v( 0 )
5448 : .save v(net-_q2-pad3_)
5449 : .save v(vout)
5450 : .save v(npnb)
5451 : .save v(pnpb)
5452 : .control
5453 : listing
5454 : .endc
5455 : .tran 1u 1
5457 : .end
Background thread stopped with timeout = 0
Doing analysis at TEMP = 27.000000 and TNOM = 27.000000
Initial Transient Solution
-------
Node Voltage
---- -------
net-_q2-pad3_ 8
npnb 0.631761
vout 7.88666
pnpb 7.17048
vv1#branch -0.040181
Reference value : 0.00000e+00
Reference value : 1.41922e-02
Reference value : 2.88152e-02
Reference value : 4.35692e-02
Reference value : 5.79132e-02
Reference value : 7.16722e-02
Reference value : 8.45952e-02
Reference value : 9.70152e-02
Reference value : 1.10691e-01
Reference value : 1.24261e-01
Reference value : 1.36660e-01
Reference value : 1.48216e-01
Reference value : 1.59004e-01
Reference value : 1.69720e-01
Reference value : 1.80509e-01
Reference value : 1.90200e-01
Reference value : 1.99672e-01
Reference value : 2.13170e-01
Reference value : 2.27611e-01
Reference value : 2.41918e-01
Reference value : 2.56504e-01
Reference value : 2.71148e-01
Reference value : 2.84939e-01
Reference value : 2.99105e-01
Reference value : 3.13070e-01
Reference value : 3.27282e-01
Reference value : 3.41380e-01
Reference value : 3.55643e-01
Reference value : 3.70269e-01
Reference value : 3.84761e-01
Reference value : 3.98641e-01
Reference value : 4.13495e-01
Reference value : 4.28258e-01
Reference value : 4.43248e-01
Reference value : 4.57897e-01
Reference value : 4.72324e-01
Reference value : 4.86992e-01
Reference value : 5.01648e-01
Reference value : 5.16285e-01
Reference value : 5.30989e-01
Reference value : 5.45721e-01
Reference value : 5.60387e-01
Reference value : 5.75004e-01
Reference value : 5.89703e-01
Reference value : 6.04436e-01
Reference value : 6.19102e-01
Reference value : 6.33699e-01
Reference value : 6.48194e-01
Reference value : 6.62910e-01
Reference value : 6.77677e-01
Reference value : 6.92429e-01
Reference value : 7.07143e-01
Reference value : 7.21589e-01
Reference value : 7.35744e-01
Reference value : 7.49895e-01
Reference value : 7.63722e-01
Reference value : 7.77554e-01
Reference value : 7.91048e-01
Reference value : 8.05140e-01
Reference value : 8.19687e-01
Reference value : 8.34215e-01
Reference value : 8.48809e-01
Reference value : 8.64113e-01
Reference value : 8.79244e-01
Reference value : 8.94093e-01
Reference value : 9.08645e-01
Reference value : 9.23023e-01
Reference value : 9.37640e-01
Reference value : 9.52231e-01
Reference value : 9.67017e-01
Reference value : 9.81742e-01
Reference value : 9.96533e-01
No. of Data Rows : 1000088
tags: | added: spice |
Changed in kicad: | |
status: | Fix Committed → Fix Released |
Hi Imre,
Could you send us the circuit that causes the issue?
Best,
tom