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1223910ba8
This removes the old example for legacy probes and adds two new scripts demonstrating many of the new probe point facilities. The rpc-monitor.stp script will print out friendly details of all RPC traffic between a libvirt client/server. This is incredibly useful in seeing what RPC calls are being made, and also debugging problems in the RPC protocol code The events.stp script will print out lots of info about the poll event loop, which is useful for debugging event handling problems * examples/systemtap/events.stp, examples/systemtap/rpc-monitor.stp: New examples * examples/systemtap/client.stp: Remove obsolete example
158 lines
5.6 KiB
Plaintext
Executable File
158 lines
5.6 KiB
Plaintext
Executable File
#!/usr/bin/stap
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#
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# Copyright (C) 2011 Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Author: Daniel P. Berrange <berrange@redhat.com>
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#
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# This script will monitor all RPC messages going in/out of libvirtd and
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# any connected clients. Example output:
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#
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# 0.000 begin
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# 2.632 C + 0x7f1ea57dc010 local=127.0.0.1;0 remote=127.0.0.1;0
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# 2.632 C > 0x7f1ea57dc010 msg=remote.1.auth_list(call, ok, 0) len=28
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# 2.632 + S 0x1c1f710 local=127.0.0.1;0 remote=127.0.0.1;0
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# 2.632 > S 0x1c1f710 msg=remote.1.auth_list(call, ok, 0) len=28
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# 2.633 < S 0x1c1f710 msg=remote.1.auth_list(reply, ok, 0) len=36
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# 2.633 C < 0x7f1ea57dc010 msg=remote.1.auth_list(reply, ok, 0) len=36
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# 2.633 C > 0x7f1ea57dc010 msg=remote.1.open(call, ok, 1) len=40
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# 2.633 > S 0x1c1f710 msg=remote.1.open(call, ok, 1) len=40
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# 2.639 < S 0x1c1f710 msg=remote.1.open(reply, ok, 1) len=28
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# 2.639 C < 0x7f1ea57dc010 msg=remote.1.open(reply, ok, 1) len=28
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# 2.639 C > 0x7f1ea57dc010 msg=remote.1.get_uri(call, ok, 2) len=28
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# 2.639 > S 0x1c1f710 msg=remote.1.get_uri(call, ok, 2) len=28
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# 2.639 < S 0x1c1f710 msg=remote.1.get_uri(reply, ok, 2) len=48
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# 2.640 C < 0x7f1ea57dc010 msg=remote.1.get_uri(reply, ok, 2) len=48
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# 2.640 C > 0x7f1ea57dc010 msg=remote.1.domain_lookup_by_id(call, ok, 3) len=32
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# 2.640 > S 0x1c1f710 msg=remote.1.domain_lookup_by_id(call, ok, 3) len=32
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# 2.640 < S 0x1c1f710 msg=remote.1.domain_lookup_by_id(reply, error, 3) len=180
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# 2.641 C < 0x7f1ea57dc010 msg=remote.1.domain_lookup_by_id(reply, error, 3) len=180
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# 2.641 C > 0x7f1ea57dc010 msg=remote.1.close(call, ok, 4) len=28
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# 2.641 > S 0x1c1f710 msg=remote.1.close(call, ok, 4) len=28
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# 2.641 < S 0x1c1f710 msg=remote.1.close(reply, ok, 4) len=28
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# 2.641 C < 0x7f1ea57dc010 msg=remote.1.close(reply, ok, 4) len=28
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# 2.641 C - 0x7f1ea57dc010 local= remote=
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# 2.641 - S 0x1c1f710 local=127.0.0.1;0 remote=127.0.0.1;0
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global start
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# If this is set to '1', then all the raw RPC values are postfixed
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# to the string translation
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global verbose=0
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# Print a string, with a timestamp relative to the start of the script
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function print_ts(msg)
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{
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now = gettimeofday_ns() / (1000*1000)
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delta = (now - start)
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printf("%3d.%03d %s\n", (delta / 1000), (delta % 1000), msg);
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}
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# Just so we know the script is now running
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probe begin {
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start = gettimeofday_ns() / (1000*1000)
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print_ts("begin")
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}
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# Format an RPC message
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function msginfo(prefix, client, len, prog, version, proc, type, status, serial)
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{
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progstr = libvirt_rpc_program_name(prog, verbose);
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procstr = libvirt_rpc_procedure_name(prog, version, proc, verbose);
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typestr = libvirt_rpc_type_name(type, verbose);
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statusstr = libvirt_rpc_status_name(status, verbose);
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print_ts(sprintf("%s %-16p msg=%s.%d.%s(%s, %s, %d) len=%d",
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prefix, client, progstr, version, procstr,
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typestr, statusstr, serial, len));
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}
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# Catch all tx/rx of RPC messages by clients & libvirtd
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probe libvirt.rpc.server_client_msg_rx {
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if (len)
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msginfo("> S", client, len, prog, vers, proc, type, status, serial)
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}
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probe libvirt.rpc.server_client_msg_tx_queue {
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if (len)
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msginfo("< S", client, len, prog, vers, proc, type, status, serial)
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}
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probe libvirt.rpc.client_msg_rx {
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if (len)
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msginfo("C <", client, len, prog, vers, proc, type, status, serial)
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}
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probe libvirt.rpc.client_msg_tx_queue {
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if (len)
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msginfo("C >", client, len, prog, vers, proc, type, status, serial)
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}
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# Used to track connection info
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global localAddrs
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global remoteAddrs;
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global clientSocks
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global serverSocks
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# Watch for all sockets opened/closed
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probe libvirt.rpc.socket_new {
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localAddrs[pid(), sock] = localAddr;
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remoteAddrs[pid(), sock] = remoteAddr;
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}
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probe libvirt.rpc.socket_free {
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if (refs == 1) {
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delete localAddrs[pid(), sock];
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delete remoteAddrs[pid(), sock];
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}
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}
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# Print whenever a client opens / closes a connection
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probe libvirt.rpc.client_new {
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clientSocks[pid(), client] = sock;
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print_ts(sprintf("C + %-16p local=%s remote=%s", client, localAddrs[pid(), sock], remoteAddrs[pid(), sock]));
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}
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probe libvirt.rpc.client_free {
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if (refs == 1) {
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print_ts(sprintf("C - %-16p local=%s remote=%s", client,
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localAddrs[pid(), clientSocks[pid(), client]],
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remoteAddrs[pid(), clientSocks[pid(), client]]));
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delete clientSocks[pid(), client];
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}
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}
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# print whenever the server receives a client connection open/close
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probe libvirt.rpc.server_client_new {
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serverSocks[pid(), client] = sock;
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print_ts(sprintf("+ S %-16p local=%s remote=%s", client, localAddrs[pid(), sock], remoteAddrs[pid(), sock]));
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}
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probe libvirt.rpc.server_client_free {
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if (refs == 1) {
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print_ts(sprintf("- S %-16p local=%s remote=%s", client,
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localAddrs[pid(), serverSocks[pid(), client]],
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remoteAddrs[pid(), serverSocks[pid(), client]]));
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delete serverSocks[pid(), client];
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}
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}
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