X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd-analyze.xml;h=de6c2bee2f9473c54124681de108f25f8286b419;hp=ae7a3377c65be90c49e60f00bb07d7061f2d7af7;hb=deb480d1a7c3f3178c44f0aa73765181c0e2317f;hpb=fa3868c6d317b88715c55422b898f9070afe6575 diff --git a/man/systemd-analyze.xml b/man/systemd-analyze.xml index ae7a3377c..de6c2bee2 100644 --- a/man/systemd-analyze.xml +++ b/man/systemd-analyze.xml @@ -21,7 +21,8 @@ along with systemd; If not, see . --> - + systemd-analyze @@ -81,6 +82,18 @@ OPTIONS dot PATTERN + > file.dot + + + systemd-analyze + OPTIONS + dump + + + systemd-analyze + OPTIONS + set-log-level + LEVEL @@ -88,14 +101,15 @@ Description systemd-analyze may be used - to determine system boot-up performance of the current - boot. + to determine system boot-up performance statistics and + retrieve other state and tracing information from the + system and service manager. systemd-analyze time prints the time spent in the kernel before userspace has been reached, the time spent in the initial RAM disk (initrd) before normal system - userspace has been reached and the time normal system + userspace has been reached, and the time normal system userspace took to initialize. Note that these measurements simply measure the time passed up to the point where all system services have been spawned, but @@ -111,7 +125,7 @@ of another service to complete. systemd-analyze critical-chain [UNIT...] - prints a tree of the time critical chain of units + prints a tree of the time-critical chain of units (for each of the specified UNITs or for the default target otherwise). The time after the unit is active or started is printed @@ -127,7 +141,7 @@ been started at what time, highlighting the time they spent on initialization. - systemd-analyze dot Generate + systemd-analyze dot generates textual dependency graph description in dot format for further processing with the GraphViz dot1 @@ -135,7 +149,7 @@ dot | dot -Tsvg > systemd.svg to generate a graphical dependency tree. Unless or - is passed the generated graph will show both ordering + is passed, the generated graph will show both ordering and requirement dependencies. Optional pattern globbing style specifications (e.g. *.target) may be given at @@ -143,7 +157,21 @@ any of these patterns match either the origin or destination node. - If no command is passed systemd-analyze + systemd-analyze dump outputs + a (usually very long) human-readable serialization of + the complete server state. Its format is subject to + change without notice and should not be parsed by + applications. + + systemd-analyze set-log-level + LEVEL changes the + current log level of the systemd + daemon to LEVEL (accepts + the same values as + described in + systemd1). + + If no command is passed, systemd-analyze time is implied. @@ -170,6 +198,36 @@ manager. + + + + Shows performance data + of the system manager. This is the + implied default. + + + + + + + Execute the operation + remotely. Specify a hostname, or + username and hostname separated by + @, to connect + to. This will use SSH to talk to the + remote machine manager + instance. + + + + + + + Execute the operation on a + local container. Specify a container + name to connect to. + + @@ -179,19 +237,19 @@ dot command (see above), selects which dependencies are shown in the dependency graph. If - is passed + is passed, only dependencies of type After= or Before= are shown. If - is passed only dependencies of type + is passed, only dependencies of type Requires=, RequiresOverridable=, Requisite=, RequisiteOverridable=, Wants= and Conflicts= are - shown. If neither is passed, shows + shown. If neither is passed, this shows dependencies of all these types. @@ -203,16 +261,16 @@ When used in conjunction with the dot command (see - above), selects which relationships + above), this selects which relationships are shown in the dependency graph. They both require glob7 patterns as arguments, which are - matched against lefthand and - righthand, respectively, nodes of a + matched against left-hand and + right-hand, respectively, nodes of a relationship. Each of these can be - used more than once which means a - unit name must match one of given + used more than once, which means a + unit name must match one of the given values. @@ -226,7 +284,15 @@ latest unit in the same level. The unit of timespan is seconds unless specified with a different unit, - i.e. "50ms". + e.g. "50ms". + + + + + + + Do not pipe output into a pager. + @@ -235,7 +301,7 @@ Exit status - On success 0 is returned, a non-zero failure + On success, 0 is returned, a non-zero failure code otherwise. @@ -243,19 +309,21 @@ Examples This plots all dependencies of any unit whose - name starts with "avahi-daemon.": + name starts with avahi-daemon.: $ systemd-analyze dot 'avahi-daemon.*' | dot -Tsvg > avahi.svg $ eog avahi.svg This plots the dependencies between all known target units: - systemd-analyze dot --to-pattern='*.target' --from-patter='*.target' | dot -Tsvg > targets.svg + systemd-analyze dot --to-pattern='*.target' --from-pattern='*.target' | dot -Tsvg > targets.svg $ eog targets.svg + + See Also