Suspicious behavior in DRC

Layout
1

Hello,
i noticed this behavior:

On a medium complexity 8 layers pcb,

image

if i launch DRC multiple time after the first the memory allocation is:
image

in the successive launches the memory slowly increase, at th 5th time i get:
image

this behavior is repeatable, could be normal or pathological.

Another strange thing that happened to me is that at a certain point the pcb window visualization start to jump around during DRC evaluation (focusing the place where the DRC indicator is placed?), slowing down the process.

I wasn’t able to find a sequence of operation that triggers this, but i’d like to know if it has happened to other users.

Application: KiCad PCB Editor x86_64 on x86_64

Version: 8.0.1-unknown-202403302349~18990587b9~ubuntu22.04.1, release build

Libraries:
	wxWidgets 3.2.1
	FreeType 2.11.1
	HarfBuzz 2.7.4
	FontConfig 2.13.1
	libcurl/7.81.0 OpenSSL/3.0.2 zlib/1.2.11 brotli/1.0.9 zstd/1.4.8 libidn2/2.3.2 libpsl/0.21.0 (+libidn2/2.3.2) libssh/0.9.6/openssl/zlib nghttp2/1.43.0 librtmp/2.3 OpenLDAP/2.5.17

Platform: Ubuntu 22.04.4 LTS, 64 bit, Little endian, wxGTK, X11, mate, x11

Build Info:
	Date: Mar 30 2024 23:49:03
	wxWidgets: 3.2.1 (wchar_t,wx containers) GTK+ 3.24
	Boost: 1.74.0
	OCC: 7.6.3
	Curl: 7.81.0
	ngspice: 42
	Compiler: GCC 11.4.0 with C++ ABI 1016

Build settings:
2

This could well be the same and now solved issue (in pre 8.0.2 testing builds)

2 Likes
3

Yes, could be, the number of zones in the design is probably in the hundreds.
I’ll retry when the testing build hit me.