SyntaxStandard
arthas-watch Verified for current stable LTS

Arthas Watch Command: Observe Second Parameter Count

An engineer would use the 'arthas-watch' command to monitor the invocation count of a specific method in a Java application, particularly focusing on the second parameter's value, during performance tuning or debugging sessions. Exact CLI syntax to observe second parameter count using Arthas Watch.

When to use this: An engineer would use the 'arthas-watch' command to monitor the invocation count of a specific method in a Java application, particularly focusing on the second parameter's value, during performance tuning or debugging sessions.

Command Syntax

watch <class-pattern> <method-pattern> '{< params[1].count >}' -e -s

Command Breakdown

-e
Command Option
Tool-specific option used by this command invocation.
-s
Command Option
Tool-specific option used by this command invocation.

FAQ

Purpose: Exact syntax to observe second parameter count using Arthas Watch.

Test path: Replace placeholders and run destructive commands in a disposable workspace first.

Flag behavior: Tool version, platform, and shell can change behavior.

Improve This Command

Suggest a correction, safer default, or version-specific note for this entry.

Related Operations

Arthas Watch Command: Observe Parameters And Return Value When First Is Five watch <class-pattern> <method-pattern> '{< params[1],returnObj >}' '<"5".equals(params[0])>' -x 4 Arthas Watch Command: Observe First Parameter And Return Value watch <class-pattern> <method-pattern> '{< params[0],returnObj >}' -x 4 Arthas Watch Command: Observe Count Property On Return Or Exception watch <class-pattern> <method-pattern> '{< params[1].count >}' -e -s Arthas Watch Command: Observe First Parameter Return Value watch <class-pattern> <method-pattern> '{< params[0],returnObj >}' -x 4 Arthas Watch Command: Conditional Parameter Observation watch <class-pattern> <method-pattern> '{< params[1],returnObj >}' '<"5".equals(params[0])>' -x 4
Back to Arthas Watch directory