Network, Processes – HP ProLiant DL380 G5 Server User Manual
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Nonpaged Bytes, so it might not equal Process: Pool Nonpaged Bytes: _Total. This counter displays the last
observed value only; it is not an average.
•
Cache Copy Reads/sec—Frequency of reads from pages of the file system cache that involve a memory copy of
the data from the cache to the application's buffer.
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Cache Copy Read Hits %—Percentage of cache copy read requests that hit the cache, that is, they did not
require a disk read to provide access to the page in the cache. A copy read is a file read operation that is
satisfied by a memory copy from a page in the cache to the buffer of the application.
Network
TCP
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Active Connections—Number of times TCP connections have made a direct transition to the SYN-SENT state
from the CLOSED state.
•
Established Connections—Number of TCP connections for which the current state is either ESTABLISHED or
CLOSE-WAIT.
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Segments/sec—Rate at which TCP segments are sent or received using the TCP protocol.
•
Segments Retransmitted/sec—Rate at which segments are retransmitted, that is, segments transmitted containing
one or more previously transmitted bytes.
•
Connection Failures—Number of times TCP connections have made a direct transition to the CLOSED state from
the SYN-SENT state or the SYN-RCVD state, and the number of times TCP connections have made a direct
transition to the LISTEN state from the SYN-RCVD state.
Controller
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Total Bytes/sec—Rate at which bytes are sent and received on the interface, including framing characters.
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Packets/sec—Rate at which packets are sent and received on the network interface.
•
Output Queue Length—Length of the output packet queue (in packets). If this length is longer than 2, delays are
being experienced and the bottleneck should be found and eliminated if possible. Since the requests are
queued by the Network Driver Interface Specification or NDIS in this implementation, this length is always set to
zero.
•
Packet Outbound Errors—Number of outbound packets that could not be transmitted because of errors.
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Packet Receive Errors—Number of inbound packets that contained errors preventing them from being
deliverable to a higher-layer protocol.
•
Current Bandwidth (Mbits/sec)—Estimate of the current bandwidth of the interface in megabits per second. For
interfaces that do not vary in bandwidth or for those where no accurate estimation can be made, this value is
the nominal bandwidth.
•
Bytes Sent/sec—Rate at which bytes are sent on the interface, including framing characters.
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Bytes Received/sec—Rate at which bytes are received on the interface, including framing characters.
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Packets Sent/sec—Rate at which packets are sent on the network interface.
•
Packets Received/sec—Rate at which packets are received on the network interface.
Physical Disks
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Volume—Name of the physical drive for which statistical information is gathered.
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Queue Length—Average number of both read and write requests that were queued for the selected disk during
the sample interval.
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Disk Busy Time %—Percentage of elapsed time that the selected disk-drive is servicing read or writes requests.
Processes
•
Process—Name of the task for which statistical information is gathered.
•
Threads—Number of threads currently active in this process. An instruction is the basic unit of execution in a
processor, and a thread is the object that executes instructions. Every running process has at least one thread.
•
Private Bytes—Current number of bytes this process has allocated that cannot be shared with other processes.
•
PageFile Bytes—Current number of bytes this process has used in the paging files. Paging files are used to store
pages of memory used by the process that are not contained in other files. All processes share paging files and
a lack of space in paging files can prevent other processes from allocating memory.
•
Working Set—Current number of bytes in the working set of this process. The working set is the set of memory
pages touched recently by the threads in the process. If free memory in the computer is above a threshold,
pages are left in the working set of a process even if they are not in use. When free memory falls below the
threshold, pages are trimmed from working sets. If they are needed, they are soft-faulted back into the working
set before they leave main memory.
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