users February 2020

users@lists.genode.org

8 participants
8 discussions

java execution time
by Duss Pirmin 06 Mar '20

06 Mar '20

Hello Genodians I have a JAVA application that I execute on request by starting it in a sub init. When debugging why it takes about 6 seconds on x86_64 to handle a request I made the discovery that when Java is included via `import_from_depot` in the runs script, that the execution time goes down to under one second. But when it is included via the depot mechanism, the execution is slow. In my tries to speed up I modified the JDK package to take the content of the `classes.tar` from a ram_fs where I extracted the file to. But this did not improve the execution time in a significant way. I did this tests on sculpt. Has someone an idea what causes this increases in execution time and if there could be a way to reduce it? Regards, Pirmin

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Goa introduction breaks
by Guido Witmond 04 Mar '20

04 Mar '20

Hi Norman, I'm running the goa Hello-example from the genodians page https://www.genodians.org/nfeske/2019-11-25-goa However, I got this error at the goa run step: $ goa run Error: runtime lacks a configuration You may declare a 'config' attribute in the <runtime> node, or define a <config> node inside the <runtime> node. I fixed it by adding a <config /> node in pkg/hello/runtime. ie: <runtime ram="1M" caps="100" binary="hello"> <config /> ... You might want to update the genodians page so it keeps working for others. Cheers, Guido.

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Announcement: Genode OS Framework version 20.02 released
by Norman Feske 28 Feb '20

28 Feb '20

I'm happy to announce the version 20.02 of the Genode OS Framework. The topics of this release were strongly motivated by Sculpt OS. As one break-through, it brings the entirety of Sculpt to 64-bit ARM hardware, including all device drivers needed for the i.MX8 SoC, and featuring even hardware-assisted virtualization. At the user-facing side, the release features a largely redesigned administrative user interface for Sculpt along with many collateral improvements regarding the overall system performance and framework infrastructure. Speaking of the latter, the release features the long anticipated library version of the init component, which eases the creation of multi-component applications following the design principles of Genode. The topics outlined above scratch only the surface. There is much more to discover: Summary: - Redesign of the user interface of Sculpt OS - Sculpt OS on 64-bit ARM i.MX8 hardware - New sandbox library for multi-component applications - VirtIO support for ARM virtual machine monitor - Virtual desktops - Enhanced GUI widget rendering - Performance optimizations - Faster XML parsing - Diminished idle load of the Seoul VMM - Lower IPC latency of the base-hw kernel - POSIX compatibility improvements - Migration to modern block-device API - Updated audio driver based on OpenBSD 6.6 - Genode running on bare-bone Linux kernel Read the complete release documentation for the version 20.02 at https://genode.org/documentation/release-notes/20.02 Have fun while exploring the new version! Norman -- Dr.-Ing. Norman Feske Genode Labs https://www.genode-labs.com · https://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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Qt5 build tools
by Nobody III 27 Feb '20

27 Feb '20

I'm trying to port Qt5 software to Genode. The lack of qmake support is problematic, as most qmake project files I've encountered cannot be handled by GNU make as regular makefiles, which is the standard method used by Genode's build tools. Aside from qmake, the other most common build system I've encountered being used by Qt5 software is CMake. Support for using either (or ideally both) of these with Goa (or the Genode SDK) would be very helpful. I recognize that Goa already has basic CMake support, but the CMake files for Qt5 aren't being generated (or aren't being kept) when Qt5 is built using Genode's build system, so CMake is not yet a viable option for building Qt5 software using Goa. Ideally support for both systems should eventually be pursued, but either one would be extremely useful. Can someone help me with this?

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virtual memory usage of base-linux components
by Duss Pirmin 25 Feb '20

25 Feb '20

Hello Genodians I'm running a scenario on base-linux on a system that has virtual memory over commit disabled. While debugging startup problems of this scenario on the target system I realized that at "random" components didn't start without any hints in the log. `strace` showed that the component that wasn't running (often timer) was terminated very early with SIGSEGV. A look at htop showed that each Genode component uses about 420 MB of virtual memory. lx_hybrid components on the other hand "only" about 170 MB. Can anybody give me some hints on where should start my quest to reduce the virtual memory footprint of Genode components on base-linux? Regards, Pirmin

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Wifi drivers in Sculpt OS
by Colin Parker 22 Feb '20

22 Feb '20

Hello, I am new to Genode/Sculpt and have been trying to get it working on my somewhat old Mac Mini. I eventually succeeded to make it boot, by disabling some unnecessary drivers like PS2. However, wifi doesn't work, and I would like that feature. There is an internal wifi card in the computer that doesn't work on Linux, so I bought a USB dongle that I've been using (with Linux). From looking at some of the source, it seems most of the drivers are brought in from Linux, but, I'm not sure if or how wifi usb is supported. There's a usb_net.list but I can't figure out if it includes wifi. Is this something that would be easy to add? Is bringing drivers over a pretty simple process like copying a few files or is it an extensive effort? Thanks in advance for your suggestions. Colin

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GCL component and repository
by Stefan Thöni 21 Feb '20

21 Feb '20

Hi Genodians We would like to release a new component under GCL. Should we place it in genode-world or create our own public repository? It the latter is the case, is there any place where you collect public repositories containing GCLed genode code? Kind regards Stefan -- Freundliche Grüsse Stefan Thöni Chairman of the Board Senior Security Architect +41 79 610 64 95 gapfruit AG Baarerstrasse 135 6300 Zug https://gapfruit.com

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LTE Chips and Genode
by Sid Hussmann 13 Feb '20

13 Feb '20

Dear Genodians, does anyone of you have experience in dealing with LTE chips? From my perspective it's unclear which path to take. Should I use a chip that connects via PCIe and port a linux driver? Or should I use one that I can connect serially using AT commands? Is there a component that abstracts the modem use-case for data transfer? Or is USB the way to go? Yours truly, Sid -- Sid Hussmann CTO & Founder gapfruit AG Baarerstrasse 135 6300 Zug - Switzerland sid.hussmann(a)gapfruit.com

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users February 2020