What it does
============

The test_load utility spawns multiple threads, each of which open
multiple files using the LwNtCreate/Read/Write/Close file client
API.  These file operations and sent through the librdr.sys.so running
in lwiod on the client machine across the network to the Likewise
server.

The test_load program will create one file per thread/per connection
in the root of the target share.


Setup
=====

Join both the client and server machines to an AD domain

    $ domainjoin-cli join ad.domain.com administrator
      Password: <enter password>

Start the client start server processes if necessary

    # /etc/init.d/lwsmd start
    # lwsm start srvsvc

Tweak the connection and thread numbers in client as you prefer and
rebuild if necessary.  See the gState structure in test_load/main.c:

    struct
    {
        ULONG ulThreadCount;
        ULONG ulConnectionsPerThread;
        ULONG ulIterations;
        PCSTR pszServer;
        PCSTR pszShare;
        BOOLEAN volatile bStart;
        pthread_mutex_t Lock;
        pthread_cond_t Event;
    } gState =
    {
        .ulThreadCount = 100,
        .ulConnectionsPerThread = 100,
       .ulIterations = 10,
        .bStart = FALSE,
        .Lock = PTHREAD_MUTEX_INITIALIZER,
        .Event = PTHREAD_COND_INITIALIZER
    };

From a shell prompt, run "kinit <username>" where <username> is the
account in the AD domain used to establish the connections.


Running the Test
================

The test is launched by running the following command:

    $ ./test_load <server fqdn> <sharename>

The <server fqdn> is the fully qualified name of the server to connect
to and the <sharename> is share in which to run the test.

[Note that the test tool itself gives very little feedback in the case of
success.  This will be addressed in the future.]


Tracking the connections on the server
======================================

The connections may be tracked on the server through the lwio-cli
utilitywhich will exercise a device ioctl into the srv driver in
order to query performance counters.  The following shows a server
recently started with very little activity:

    $ /opt/likewise/bin/lwio-cli  --get-stats
    Server statistics [level 0]:

    Number of connections:           [2]
    Maximum Number of connections:   [2]
    Number of sessions:              [2]
    Maximum Number of sessions:      [2]
    Number of tree connects:         [4]
    Maximum Number of tree connects: [4]
    Number of open files:            [0]
    Maximum Number of open files:    [0]


The following shows a server under active testing

    $ /opt/likewise/bin/lwio-cli  --get-stats
    Server statistics [level 0]:

    Number of connections:           [5067]
    Maximum Number of connections:   [5067]
    Number of sessions:              [5061]
    Maximum Number of sessions:      [5061]
    Number of tree connects:         [5066]
    Maximum Number of tree connects: [5066]
    Number of open files:            [5066]
    Maximum Number of open files:    [5066]

Performance counters may be reset by running

    $ /opt/likewise/bin/lwio-cli --reset-stats