Logread -f and logread -f | grep not giving any output

root@swi-mdm9x28-wp:~# logread | tail -20
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2083 | Skipping file link ‘/lib/libgcc_s.so.1’ to ‘/legato/systems/current/appsWriteable/App1/lib/libgcc_s.so.1’: Already exists
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2083 | Skipping file link ‘/lib/libm.so.6’ to ‘/legato/systems/current/appsWriteable/App1/lib/libm.so.6’: Already exists
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2083 | Skipping file link ‘/usr/lib/libstdc++.so.6’ to ‘/legato/systems/current/appsWriteable/App1/lib/libstdc++.so.6’: Already exists
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2083 | Skipping file link ‘/legato/systems/current/apps/App1/read-only/lib/libComponent_Component1.so’ to '/legato/systems/current/appsWriteable/App1/lib/libCo
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2083 | Skipping file link ‘/legato/systems/current/apps/App1/read-only/bin/firstapp’ to ‘/legato/systems/current/appsWriteable/App1/bin/firstapp’: Already exis
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateTmpFs() 1787 | Mounted tmpfs at /legato/systems/current/appsWriteable/App1/tmp.
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2153 | Created file link ‘/tmp/legato/serviceDirectoryServer’ to ‘/legato/systems/current/appsWriteable/App1/tmp/legato/serviceDirectoryServer’.
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | app.c CreateFileLink() 2153 | Created file link ‘/tmp/legato/serviceDirectoryClient’ to ‘/legato/systems/current/appsWriteable/App1/tmp/legato/serviceDirectoryClient’.
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | resourceLimits.c GetCfgResourceLimit() 207 | Configured resource limit maxStackBytes is not available. Using the default value 0.
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | proc.c proc_Start() 1403 | Starting process ‘firstapp’ with pid 8775
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[1109]/supervisor T=main | supervisor.c SigChildHandler() 899 | Reaping unconfigured child process 8771.
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | proc.c proc_Start() 1363 | Execing ‘firstapp’
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxCoreDumpFileBytes to value 102400.
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxFileBytes to value 102400.
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxLockedMemoryBytes to value 8192.
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxFileDescriptors to value 256.
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxMQueueBytes to value 512.
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxThreads to value 20.
Dec 18 10:23:49 swi-mdm9x28-wp user.info Legato: INFO | supervisor[8775]/supervisor T=main | resourceLimits.c SetRLimitValue() 301 | Setting resource limit maxQueuedSignals to value 100.
Dec 18 09:23:49 swi-mdm9x28-wp user.info Legato: INFO | firstapp[8775]/Component1 T=main | App1.c _Component1_COMPONENT_INIT() 8 | App1 working
root@swi-mdm9x28-wp:~# logread -f | grep App1
^C
root@swi-mdm9x28-wp:~# logread -f
^C

I am not getting logread output when i run logread for my specific Application App1. I can only see the output of my app when i run below command

logread -f | tail -10

Can anyone help me.

You can try to remove the -f option