bug#40626: Poor performance on low-end ARMv7 devices

2020-07-14 Thread Ludovic Courtès
Hi, Denis 'GNUtoo' Carikli skribis: > A way to deal with that could be to validate if it's actually the case, > for instance by installing an SSD, and doing performance comparison > with the time command. > > Then if it helps a lot, we probably need to trace the filesystem access > and optimize

bug#40626: Poor performance on low-end ARMv7 devices

2020-07-13 Thread Denis 'GNUtoo' Carikli
On Mon, 13 Jul 2020 15:34:15 +0200 Ludovic Courtès wrote: > Hi, > > Denis 'GNUtoo' Carikli skribis: > > > Many ARM Single Board Computers are commonly used with microSD for > > storage, and some microSD cards are extremely slow (and sometimes > > unreliable when they are old). > > > > Could th

bug#40626: Poor performance on low-end ARMv7 devices

2020-07-13 Thread Ludovic Courtès
Hi, Denis 'GNUtoo' Carikli skribis: > Many ARM Single Board Computers are commonly used with microSD for > storage, and some microSD cards are extremely slow (and sometimes > unreliable when they are old). > > Could the performance issues be related to storage device I/Os? It could be the reaso

bug#40626: Poor performance on low-end ARMv7 devices

2020-07-03 Thread Mathieu Othacehe
Hello, > Many ARM Single Board Computers are commonly used with microSD for > storage, and some microSD cards are extremely slow (and sometimes > unreliable when they are old). > > Could the performance issues be related to storage device I/Os? For those ARMv7 devices, which have few substitute

bug#40626: Poor performance on low-end ARMv7 devices

2020-07-02 Thread Denis 'GNUtoo' Carikli
Hi, Many ARM Single Board Computers are commonly used with microSD for storage, and some microSD cards are extremely slow (and sometimes unreliable when they are old). Could the performance issues be related to storage device I/Os? Denis. pgpevYyzP4lp9.pgp Description: OpenPGP digital signatur

bug#40626: Poor performance on low-end ARMv7 devices

2020-04-16 Thread Ludovic Courtès
Ludovic Courtès skribis: > Most of it seems to go in loading .go files: On x86_64, I’ve run: ./pre-inst-env perf record guile -c '(use-modules (gnu packages libreoffice))' which shows mostly GC activity, along with symbol interning activity: --8<---cut here---start--

bug#40626: Poor performance on low-end ARMv7 devices

2020-04-14 Thread Ludovic Courtès
Hi Danny, Danny Milosavljevic skribis: > root@bpi-iot-ros-ai:/# guix repl > GNU Guile 2.2.4 This is a fairly old Guix though, so not directly comparable. Could you try with a current Guix? (Yeah, you’ll have to pull, and that takes very loong. Be sure to pick a commit that’s fully built

bug#40626: Poor performance on low-end ARMv7 devices

2020-04-14 Thread Danny Milosavljevic
For comparison, on a Banana Pi M2 Ultra I get: root@bpi-iot-ros-ai:/# time guix build hello -d --no-grafts /gnu/store/yp46hszc04dx2zy6kscy1zmjfg9y8flq-hello-2.10.drv real0m13.481s user0m11.230s sys 0m0.900s root@bpi-iot-ros-ai:/# time guix build hello -d --no-grafts /gnu/store/yp46hs

bug#40626: Poor performance on low-end ARMv7 devices

2020-04-14 Thread Julien Lepiller
Le 14 avril 2020 09:59:24 GMT-04:00, "Ludovic Courtès" a écrit : >Hello! > >On my Olimex OLinuXino A20, here’s what I get with Guix on Guile 3.0.2: > >--8<---cut here---start->8--- >$ guix describe >Generation 1Apr 11 2020 13:26:01(current) > guix 67206

bug#40626: Poor performance on low-end ARMv7 devices

2020-04-14 Thread Ludovic Courtès
Hello! On my Olimex OLinuXino A20, here’s what I get with Guix on Guile 3.0.2: --8<---cut here---start->8--- $ guix describe Generation 1Apr 11 2020 13:26:01(current) guix 6720616 repository URL: https://git.savannah.gnu.org/git/guix.git commi