[GH-ISSUE #3136] firejail --top causes single cpu core large load #1967

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opened 2026-05-05 08:37:48 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 08:37:48 -06:00

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Originally created by @ghost on GitHub (Jan 9, 2020).
Original GitHub issue: https://github.com/netblue30/firejail/issues/3136

Fedora 31 firejail 0.9.62 sourceforge RPM (installed with sudo dnf install ./firejail.rpm)

when starting firejail --top the first anomalous behavior observed is that the refresh is not smooth (it was on ubuntu 18 lts), it alternates between displaying the processes and displaying nothing, almost equal time for both. The column names are always displayed so it's not a terminal display issue probably.

It also causes a single CPU core to fluctuate from 100% to 50% in an almost sine wave.

Originally created by @ghost on GitHub (Jan 9, 2020). Original GitHub issue: https://github.com/netblue30/firejail/issues/3136 Fedora 31 firejail 0.9.62 sourceforge RPM (installed with sudo dnf install ./firejail.rpm) when starting firejail --top the first anomalous behavior observed is that the refresh is not smooth (it was on ubuntu 18 lts), it alternates between displaying the processes and displaying nothing, almost equal time for both. The column names are always displayed so it's not a terminal display issue probably. It also causes a single CPU core to fluctuate from 100% to 50% in an almost sine wave.

gitea-mirror added the

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label 2026-05-05 08:37:48 -06:00

gitea-mirror commented

2026-05-05 08:37:50 -06:00

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@ghost commented on GitHub (Jan 9, 2020):

firejail --tree also causes a 100% single core spike before exiting. Though not sure if that one is expected. With watch -n1 grep something almost exact cpu behavior as --top

@ghost commented on GitHub (Jan 9, 2020): firejail --tree also causes a 100% single core spike before exiting. Though not sure if that one is expected. With watch -n1 grep something almost exact cpu behavior as --top

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Reference: github-starred/firejail#1967

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