How to set-up an alert when my memory usage goes above 80%?

[manja054]

host=* sourcetype="Perfmon:Memory"

collection=Memory
object=Memory
counter="% Committed Bytes In Use"
Value=27.863303753428205

My stats looks like above and i want to be notified when my memory usage goes above 80%

[stephanefotso]

Hello! Try a search like this, and save it as an alert.

host=* sourcetype="Perfmon:Memory"  | stats count as mem  count(eval(counter="% Committed Bytes In Use")) as mem_used |eval percentage=round(mem_used/mem,3)*100 | where percentage > 80| fields  mem_used, mem, percentage

Thanks!

[KSinghK]

% Committed Bytes In Use% is not the actual parameter to monitor memory.

sourcetype=perfmon* OR sourcetype=winhostmon FreePhysicalMemoryKB="*" i
| eval MemoryUsedPercent=round((TotalPhysicalMemoryKB - FreePhysicalMemoryKB)/TotalPhysicalMemoryKB * 100,2)
| eval MemoryUsedMB=(TotalPhysicalMemoryKB-FreePhysicalMemoryKB)/1024 | Stats count by host

[KSinghK]

sourcetype=perfmon* OR sourcetype=winhostmon FreePhysicalMemoryKB="*" index=<your index> 
| eval MemoryUsedPercent=round((TotalPhysicalMemoryKB - FreePhysicalMemoryKB)/TotalPhysicalMemoryKB * 100,2)
| eval MemoryUsedMB=(TotalPhysicalMemoryKB-FreePhysicalMemoryKB)/1024 | stats count by host

updated the search just add your index here.