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Diffstat (limited to 'slides.pdfpc')
| -rw-r--r-- | slides.pdfpc | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/slides.pdfpc b/slides.pdfpc index d73ac6e855d5..971f40eee5ab 100644 --- a/slides.pdfpc +++ b/slides.pdfpc @@ -51,4 +51,19 @@ systemd.device - trigger units when certain devices are connected systemd.mount - systemd equivalent of fstab entries systemd.swap - like mount systemd.slice - unit groups for resource management purposes -... and a few more specialised ones \ No newline at end of file +... and a few more specialised ones +### 10 +Linux cgroups are a new resource management feature added quite a long time ago, but not used much. +Cgroups can be created manually and processes can be moved into them in order to control resource utilisation +Few people used them before systemd, limits.conf was often much easier but not as fine-grained +Systemd changed this +### 11 +Systemd collects standard output and stderr from all processes into its journal system +they provide a tool for querying the log, for example grouping service logs together with correct timestamps, querying, +### 12 +Systemd tooling, most important one is systemctl for general service management +journalctl is the query and management tool for journald +systemd-analyze is used for figuring out performance issues, for example by analysing the boot process, can make cool graphs of dependencies +systemd-cgtop is like top, but not on a process level - it's on a cgroup/slice level, shows combined usage of cgroups +systemd-cgls lists contents of systemd's cgroups to see which services are in what group +there also exist a bunch of others that we'll skip for now |