.. _Monitoring Clients:

Monitoring Clients
------------------

By monitoring clients, you can check the status and health of servers that you use to access virtual machines. To monitor clients, use the ``vstorage -c <cluster_name> top`` command. For example:

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The command above shows detailed information about the ``stor1`` cluster. The monitoring parameters for clients (highlighted in red) are as follows.

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**CLID**
   Client identifier (ID).

**LEASES**
   Average number of files opened for reading/writing by the client and not yet closed, for the last 20 seconds.

**READ**
   Average rate, in bytes per second, at which the client reads data, for the last 20 seconds.

**WRITE**
   Average rate, in bytes per second, at which the client writes data, for the last 20 seconds.

**RD_OPS**
   Average number of read operations per second the client made, for the last 20 seconds.

**WR_OPS**
   Average number of write operations per second the client made, for the last 20 seconds.

**FSYNCS**
   Average number of sync operations per second the client made, for the last 20 seconds.

**IOLAT**
   Average/maximum time, in milliseconds, the client needed to complete a single IO operation, for the last 20 seconds.

**HOST**
   Client hostname or IP address.

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