From mboxrd@z Thu Jan  1 00:00:00 1970
From: douglas.santos@polymtl.ca (Douglas Santos)
Date: Tue, 09 Feb 2010 09:46:27 -0500
Subject: [ltt-dev] UST - Problems in recording trace on a current process
In-Reply-To: <19fa8ef31002081349v36a13174m1a031048048fd45c@mail.gmail.com>
References: <19fa8ef31002081349v36a13174m1a031048048fd45c@mail.gmail.com>
Message-ID: <1265726787.4b717543bc4d6@www.imp.polymtl.ca>

Quoting Naren <tracemein at gmail.com>:
> When executing ustctl in manual mode to record a trace on a current process,
> i am getting the following error.
>
> *Error: connect: No such file or directory (../libustcomm/ustcomm.c:452)*
> *ustcmd_send_cmd: could not connect to PID 1989*
> *error while trying to list markers for PID 1989*

I'm supposing that you are using the latest git version with rcu0.4.0.

The error "could not connect to PID 1989" maybe related to the permissions.
Like you started ustd as root and ustctl as an unprivileged user.