From mboxrd@z Thu Jan 1 00:00:00 1970 From: tracemein@gmail.com (Naren) Date: Tue, 9 Feb 2010 18:11:33 +0100 Subject: [ltt-dev] UST - Problems in recording trace on a current process In-Reply-To: <201002091142.33606.pierre-marc.fournier@polymtl.ca> References: <19fa8ef31002081349v36a13174m1a031048048fd45c@mail.gmail.com> <76cdca01002081737v6978c1ebgcef9a480686fc1ba@mail.gmail.com> <76cdca01002081748i1efbece0mac01ff1d59782783@mail.gmail.com> <201002091142.33606.pierre-marc.fournier@polymtl.ca> Message-ID: <19fa8ef31002090911x67b99823v54f0e423ff6ea121@mail.gmail.com> Message-ID: <20100209171133.tSPz1KZdslOoOsWrbqkTRH-XcOBvL7mKE9Lp-cCEZIc@z> Hi Pierre I did a strace on ustctl as suggested by you. Found this problem with connect call in strace. *socket(PF_FILE, SOCK_STREAM, 0) = 3* *connect(3, {sa_family=AF_FILE, path="/tmp/ust-app-socks/11191"}, 110) = -1 ENOENT (No such file or directory)* *gettid() = 23476* I did a manual check on ust-app-socks, found only "ustd" running inside that. Regards, Naren On Tue, Feb 9, 2010 at 5:42 PM, Pierre-Marc Fournier < pierre-marc.fournier at polymtl.ca> wrote: > On February 8, 2010 20:48:16 soumyakanti chakraborty wrote: > > Hi Pierre > > > > I am still getting the same errors during the tracing of a particular > > process with specific pid's - > > > > *ustctl[1605/1605]: Error: connect: No such file or directory (in > > ustcomm_connect_path() at ../libustcomm/ustcomm.c:452)* > > *ustcmd_send_cmd: could not connect to PID 1283* > > *error while trying to list markers for PID 1283* > > > > Further thoughts on this. You could see this message also if libust is not > linked to the program you are trying to trace. > > Another case is if your program is registering a handler for SIGUSR1. > > If not, send us the strace output around the connect() call. > > pmf > > _______________________________________________ > ltt-dev mailing list > ltt-dev at lists.casi.polymtl.ca > http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev > -------------- next part -------------- An HTML attachment was scrubbed... URL: