Network statistics

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The network statistics section of the nmon recording file contains details on different network configurations and utilization-specific data.

The following sections in the nmon recording file are used to identify the network statistics:
BBBN
Records the network configuration details for different network interfaces. This section contains the following fields:
Network Name
Name of the network interface.
MTU
Network frame size.
Mbits
Adapter rating in Mbits per second that indicates the speed of the interface. Adapter bit rate is reported as 10240 Mbits/s if the speed of the adapter is more than 10 Gb
Name
Description of the interface. This field value is similar to the output of the lscfg command.
NET
Records the network I/O statistics. This statistic is present in every iteration and for every network interface. This section contains the following fields:
<interface>-read-KB/s
Amount of data in KB that is received on the interface per second.
<interface>-write-KB/s
Amount of data in KB that is sent on the network interface per second.
NETPACKET
Records the network packet statistics per interface. This section contains the following fields:
<interface>-reads/s
Number of packets received on the interface per second.
<interface>-writes/s
Number of packets sent on the interface per second.
NETSIZE
Average transfer size of the packets per interface. This section contains the following fields:
<interface>-readsize
Average size of the packets received on the interface. This field is the ratio of total bytes received on that interface to the total number packets received on that interface.
<interface>-writesize
Average size of the packets that is transmitted on that interface. This field is the ratio of total bytes transmitted on an interface to the total number packets transmitted on the interface.
NETERROR
Provides error statistics per network interface and is similar to the data provided by the netstat –in command. This section contains the following fields:
<interface>-ierrs
Number of errors that occurred per second when data is received on the interface.
<interface>-oerrs
Number of errors that occurred per second when data is sent on the interface.
<interface>-collisions
Number of collisions per second on the interface.
Note: A network collision can occur when more than one interface tries to send packet on the same network segment. If you are using an Ethernet adapter, this value is always 0.
SEA
Records the Shared Ethernet Adapter (SEA) statistics and configuration details. This section contains the following fields:
Note:
  1. If some SEAs are not available after the start of recording, those values will be recorded as 0.
  2. The field is not recorded if SEA does not exist.
If errors occur, this section contains error messages. This section contains the following fields:
BBBS,<line no >, Shared Ethernet Adapter stats,SEAs found,<#number of SEAs>
Number of Shared Ethernet Adapters in the VIOS.
BBBS, <line no>, SEA#, <seaname>
SEA # value indicates SEA index number. Local indexing is used to identify the SEA.
BBBS,<line no>,SEA#,<seaname>,<o.p of lsattr –Eol <seaname>>
You can refer to the man page of the lsattr command to understand the detailed output of the command.
SEA : utilization
Records SEA utilization statistics. This section contains the following fields:
<SEA-Name>_ read-KB/s
Amount of data in KB that is received per second on the SEA.
<SEA-Name>- write-KB/s
Amount of data in KB that is transmitted per second on the SEA.
SEAPACKET
Records utilization statistics that are related to SEA Packet. This section contains the following fields:
<SEA –Name> -reads/s
Number of packets that are received per second on the SEA adapter.
<SEA –Name> -writes/s
Number of packets that are transmitted per second on the SEA adapter.
BBBSEA,001, <sea List>
Records list of SEAs in the VIOS. <sea list>- is a comma separated list of SEA names.
BBBSEACONF, <line no>
Records SEA configuration Information. This section is present only once in the nmon recording file. This section contains the following fields:
<sea_name>_ Large_send
This flag indicates the large data send option for theadapter.
<sea_name>_ Large_receive
This flag indicates the large data receive option for the adapter.
<sea_name>_Thread
This flag indicates the threading mode for this adapter.
<sea_name>_ha_mode
You can refer this flag to see whether high availability mode is enabled.
BBBSEACHEC,000, Ether Channel Adapter Names BBBSEACHEC,001, <Etherchannel Names>
Records Ethernet Channel adapter names. This section is present only once in the recording file. This section contains the following fields:
EtherChannel Names
List of ether channel adapter names.
BBBSEACHECCONF, <line no>
Records Etherchannel Adapter Configuration Information
BBBSEACHECCONF, <lineno>, <etherchannelname_hash_mode>
Records hash mode value. This value is used by the algorithm to determine the outgoing adapter.
BBBSEACHECCONF, <line no>
Records ether channel adapter configuration information. This section contains the following fields:
BBSEACHECCONF,<lineno>,<etherchannelname_hash_mode>
The data value that will be used by the algorithm to determine the outgoing adapter.
<sea_name>_Thread
Indicates that the threading mode for this adapter.
<sea_name>_ha_mode
Indicates that the high availability mode flag is enabled in a shared Ethernet failover setup.
BBBSEACHPHY,000
Records physical adapter names. Physical adapters are used to create shared Ethernet adapters. This section is present only once in the recording file.
BBBSEACHPHY,001
Physical adapters that are used to bridge at the time of creation of shared Ethernet adapters.
BBBSEACHPHYCONF, <Line no>
Records physical adapter configuration information. This section is recorded when –y sub=sea option is enabled. This section is present only once in the nmon recording file. This section contains the following fields:
<Physical Adapter name>_Large_Send
This field is used to indicate whether the option to send large data on the adapter is enabled or disabled.
<Physical Adapter name>_Large_receive
This flag is used to indicate whether the option to receive large data on the adapter is enabled or disabled.
Note: When this flag is set and if the adapter supports the flag, packets received by the adapter is aggregated before they are passed to the upper network layer, to achieve better performance.
<Physical Adapter name>_DMA_Errors
The number of incoming packets dropped by the hardware due to no resource error.
Note: This error usually occurs because the receive buffers of the adapter were exhausted. Some adapters might have the size of the receive buffer as a configurable parameter.
<Physical Adapter name>_Speed
Provides media speed attribute of this adapter.
<Physical Adapter name>_Flow_control
Specifies whether the adapter must enable transmit and receive flow control.
BBBSEACHVIR,000
Records virtual adapter names. You can use the -y sub=sea option to enable recording of this section in the nmon recording file. This will be present only once in the recording file. This section contains the following fields:
BBBSEACHVIR,001,<Virtual Adapter Names>
List of virtual adapter names. Virtual Ethernet adapters allow logical partitions within the same system to communicate without having to use physical Ethernet adapters. Within the system, these adapters are connected to a virtual Ethernet switch in the hypervisor. TCP/IP communications over these adapters are routed through the server firmware. The system transmits packets by copying the packet directly from the memory of the sender LPAR to the receive buffers of the receiver LPAR without any intermediate buffering of the packet.
BBBSEACHVIRCONF, <line no>
Records virtual adapter configuration Information. You can use the -y sub=sea option to enable recording of this section in the nmon recording file. This will be present only once in the recording file. This section contains the following fields:
<Virtual Adapter Name>_Snd_Errors
Number of send errors at hypervisor level.
<Virtual Adapter Name>_RscErrors
Number of receive errors at the hypervisor level.
<Virtual Adapter Name>_invalid_vid_packets
Number of packets that have invalid virtual LAN (VLAN) ID.
SEACHPHY
Records the physical adapter network traffic. You can use the -y sub=sea option to enable recording of this section in the nmon recording file. This section contains the following fields:
<physical adaptername>_read-KB/s
Total amount of data in KB that is received per second on the interface.
<physical adaptername>__write-KB/s
Amount of data in KB transmitted per second on this interface.
Note: Value of this field is sum of total number of packets sent from the interface configured over the SEA, and total packets sent from the virtual network to the physical network.
<physical adaptername>_reads/s
Total bytes of data received per second on the interface.
<physical adaptername>_writes/s
Total bytes of data sent per second on the interface.
<physical adaptername>_Transmit_Errors
Number of errors per second during transmission on the interface.
<physical adaptername>_Receive_Errors
Number of errors occurred during receive operation on the interface.
<physical adaptername>_Packets_Dropped
Total number of packets dropped during the communication between virtual adapters and the physical adapter. This packet drop includes drops occurred while receiving the packets on the physical network and while transmitting the packets over the physical network.
<physical adaptername>__No_ResErrors
The number of incoming packets dropped by the hardware due to no resource error.
Note: This error occurs if the receive buffers on the adapter were exhausted. Some adapters have receive buffer with configurable size.
<physical adaptername>__No_Mbuf_Errors
Number of incoming packets with collision errors during reception. A network collision can occur when more than one interface tries to send packet on the same network segment.
Note: If you are using Ethernet adapter this is always 0. Because the adapter is set to full duplex mode. If we set the adapter to auto negotiation mode, it might set the adapter to half duplex mode which leads to network collision and causes network performance issues.
BBBSEAC,000
Records statistics about SEA active client adapters. This section is recorded only once in the nmon recording file.
BBBSEAC,001, <Sea client adapters>
List of MAC addresses of the SEA client adapters.
SEACLITRAFFIC
Records network traffic statistics of the SEA client adapters. If any specific client adapters are deleted from the list of configured adapters after the headers are written to the recording file, value for those adapters are recorded as 0. This section contains the following fields:
<sea_client_mac_name> _read-KB/s
Total amount of data in KB that is received per second on the adapter.
<sea_client_mac_name> _write-KB/s
Total amount of data in KB that is transmitted per second on the adapter.
<sea_client_mac_name> _reads/s
Total amount of data in bytes received per second on the adapter.
<sea_client_mac_name> _writes/s
Total amount of data in bytes that is transmitted per second on the adapter.
NFS*
Records Network File System (NFS) statistics. The NFS is a mechanism for storing files on a network. It is a distributed file system that allows users to access files and directories located on remote computers and use those files and directories as if they are local files.
NFSSVRV2
Records statistics related to NFS version 2 (NFSv2). This section contains the following fields:
null
Number of null requests to the NFSv2 server. These requests are made for checking the connectivity to a server.
getattr
Number of getattr() requests to the NFSv2. These requests are made to determine what type of file was called.
setattr
Number of setattr() requests to NFSv2 server. These calls are made to set the attributes of a file over an interval.
root
The number of NFS calls made to the server by the root user during a monitored interval.
Lookup
The number of filename lookup requests made by an NFS server during a monitored interval.
readlink
Number of readlink() requests to NFSv2 server. The number of calls received by a NFS server during the monitored interval.
read
The number of read() calls by a server during a monitored interval.
wrcache
The number of wrcache() calls made to a server during a monitored interval.
write
The number of write() calls made to a server during a monitored interval.
create
The number of file create() calls made to a server during the monitored interval.
remove
The number of remove() file calls made to a server during a monitoring interval.
rename
The number of rename() file calls made to a server during a monitoring interval.
link
The number of hard link reports made by a server during a monitored interval.
symlink
The number of symlink() calls made to a server during a monitoring interval.
mkdir
The number of mkdir() calls made to a server during a monitoring interval.
rmdir
The number of rmdir() calls made to a server during a monitoring interval.
readdir
The number of readdir() calls made to a server during a monitoring interval.
fsstat
The number of file statistics calls made during the monitored interval.
NFSSVRV3
Records statistics related to NFS version 3 (NFSv3). This section contains the following fields:
null
Number of null requests to the NFSv3 server. These requests are made for checking the connectivity to a server.
getattr
Number of getattr() requests to the NFSv3 server. These requests are made to determine what type of file was called.
setattr
Number of setattr() requests to NFSv3 server. These calls are made to set the attributes of a file over an interval.
Lookup
The number of filename lookup requests made by an NFS server during a monitored interval.
access
Number of file access requests made to NFS Server during monitoring interval.
readlink
Number of readlink() requests to NFSv3 server. The number of calls received by a NFS server during the monitored interval.
read
The number of read() calls by a server during a monitored interval.
write
The number of write() calls made to a server during a monitored interval.
create
The number of file create() calls made to a server during the monitored interval.
mkdir
The number of mkdir() calls made to a server during a monitoring interval.
symlink
The number of symlink() calls made to a server during a monitoring interval.
mknod
Number of mknod() calls made to a server during the monitoring interval remove The number of remove file calls made to a server during a monitoring interval.
remove
The number of remove() calls made to a server during a monitoring interval.
rmdir
Number of rmdir() calls made to a server during a monitoring interval.
rename
Number of rename() calls made to a server during a monitoring interval.
link
Number of hard link reports made by a server during a monitoring interval.
readdir
The number of readdir() calls made to a server during a monitoring interval.
readdirp
The number of readdirp() calls made to a server to get the the name, the file ID, attributes, and file handle.
fsstat
The number of file statistics calls made during the monitored interval.
fsinfo
The number of file system information calls made to the NFS server.
pathconf
The number of pathconf() calls made to the NFS server.
commit
The number of file commit calls made to the NFS server.
NFSCLIV2
Records NFS client version 2 statistics. This section contains the following fields:
null
The number of calls generated for checking connectivity to a server.
getattr
The number of calls made to determine what type of file is being called.
setattr
The number of NFS calls made to set the attributes of a file during a monitored interval.
root
The number of NFS calls made to the server by the root user during a monitoring interval.
lookup
Number of NFS client file lookup names request.
readlink
Number of readlink() calls NFS client.
read
Number of NFS client read directory requests.
wrcache
Number of NFS client wrcache() calls requests.
write
Number of NFS client write call requests.
create
Number of NFS client file create call requests.
remove
Number of NFS client file remove requests.
rename
Number of NFS client file rename requests.
link
Number of NFS clinet hard link creation requests.
link
symlink
Number of NFS clinet symbolic link creation requests.
mkdir
Number of NFS client directory creation requests.
rmdir
Number of NFS client directory removal requests.
readdir
Number of NFS client directory read requests.
fsstat
Number of NFS file statistics call requests.
NFSCLIV3
Records NFS Client Version 3 statistics. This section contains the following fields:
null
The number of calls generated for checking connectivity to a server.
getattr
The number of calls made to determine what type of file is being called.
setattr
The number of NFS calls made to set the attributes of a file during a monitored interval.
lookup
Number of NFS client file lookup names request.
access
readlink
Number of readlink() calls NFS client.
read
Number of NFS client read directory requests.
write
Number of NFS client write call requests.
create
Number of NFS client file create call requests.
mkdir
Number of NFS client directory creation requests.
symlink
Number of NFS clinet symbolic link creation requests.
mknod
Number of NFS client directory creation requests.
remove
Number of NFS client file remove requests.
rmdir
Number of NFS client directory removal requests.
rename
Number of NFS client file rename requests.
link
Number of NFS clinet hard link creation requests.
readdir
Number of NFS client directory read requests.
readdirp
Number of NFS client readdir plus call requests.
fsstat
Number of NFS file statistics call requests.
fsinfo
Number of NFS Client file information call requests.
pathconf
The number of calls by NFS client that involved path configuration (pathconf) calls to obtain configuration values for files.
commit
The number of file commit calls made by the NFS client.
NFSSVRV4
Records the NFS Version 4 statistics. This section contains the following fields:
access
The number of access calls made to the NFS server.
clientid_confirm
The number of set clientid confirm operations on the NFS server.
close
Number of file close requests on the NFS Server.
commit
The number of file commit calls made to the NFS server.
compound
Number of compound calls requests to NFS server. The compound procedure consists of one or more NFS operations that were typically defined as separate RPC procedures in the previous NFS versions. This change might result in requiring fewer Remote Procedure Calls (RPCs) to perform logical file system operations over the network.
create
The number of file creates calls made to a server during the monitoring interval.
delegpurge
Number of NFSv4 server purge delegation operations that are awaiting recovery.
getattr
Number of getattr() requests to NFS server. This call determines what type of file is used.
delegreturn
Number of delegreturn() operations on the NFS Server.
getfh
Number of get file handle requests made to the NFS server.
link
The number of hard link create requests made to a server during a monitoring interval.
lock
Number of file lock or record lock requests made to NFS server during the monitored interval.
lockt
Number of requests for testing specific lock on the NFS server.
locku
Number of requests to unlock file requests made to NFS server.
lookup
The number of filename Lookup requests made by an NFS server during a monitoring interval. lookupp Number of parent directory lookup requests made by NFS server.
lookupp
Number of parent directory lookupp() requests made by NFS Server
null
The number of calls generated for checking connectivity to a server.
nverify
The number of nverify operations made on the NFS Server.
open
Number of file open requests made to NFS Server.
openattr
Number of open attr operations made on NFS Server.
open_confirm
Number of open confirm operations made on NFS server.
open_downgrade
Number of NFS downgrade access operation done to open files on NFS server.
operations
Number of NFS server operations.
putfh
Number of put filehandle operation requests made on NFS server.
putpubfh
Number of requests to replace the current filehandle with the filehandle that represents the public filehandle of the name space of the server.
putrootfh
Number of requests to replace the current filehandle with the filehandle that represents the root of the server’s name space.
read
Number of read operations made on NFS Server.
readdir
Number of directory read operations made on NFS Server.
readlink
Number of read symbolink read operations made on NFS server.
release_lock
Number of release lock operations made on NFS Server.
remove
The number of Remove File calls made to a server during a monitoring interval.
rename
The number of Rename File calls made to a server during a monitoring interval.
renew
Number of renew operations made to the NFS server to renew leases which are hold.
restorefh
Number of restore file handle requests made to NFS ेerver.
savefh
Number of requests to save file handle on NFS Server. These handles can be later restore and will be accounted as restorefh requests.
secinfo
Number of secinfo requests made to the server to obtain a valid RPC authentication flavors for a specific file handle, file name pair.
setattr
Number of setattr requests made to a NFS server to set attributes of a file.
verify
Number of verify requests made on NFS server. The verify operation is used to verify that attributes have a value assumed by the client before proceeding with following operations in the compound request.
write
Number of write requests made to NFS Server.
NFSCLIV4
Records NFS Client version 4 statistics. This section contains the following fields:
access
Number of check access right requests made by NFS client.
acl_read
Number of access control list read operations made by NFS Client.
acl_stat_l
Number of access control list retrieve operations made by NFS client.
acl_write
Number of write access control list operations made by NFS client.
client_confirm
Number of client confirm operations made by NFS Client.
close
Number of Close operation request made by NFS client.
commit
Number of commit request made by NFS client. The COMMIT operation forces or flushes data to stable storage for the file specified by the current file handle.
create
Number of file create requests made by NFS client.
delegreturn
Number of delegation return requests made by NFS client.
finfo
Number client info requests for file made by NFS client.
getattr
Number of file get attributes requests made by NFS client.
link
The number of hard link create requests made by NFS client during a monitoring interval
lock
Number of lock requests made by NFS Client.
lock_test
Number of lockT operation requests made by NFS client.
lookup
Number of file name lookup operation requests made by NFS client.
mkdir
Number of create directory operations made by NFS Client.
mknod
Number of mknod operations made by client.
null
The number of calls generated for checking connectivity to a server.
open
Number of open file requests made by NFS client.
open_confirm
Number of open_confirm requests made by NFS Client.
open_downgrade
Number of downgrade file requests access made by NFS client.
operations
Number of operations requests made by NFS Client.
pcl_read
Number of pcl_read requests made by NFS client. Here client extracts numeric data from printer control language (PCL) file.
pcl_stat
Number of requests to get stats on PCL files by NFS client.
pcl_stat_l
Number of requests to retrieve long PCL attributes by NFS client.
pcl_write
Number of write requests on PCL made by NFS Client.
read
Number of read requests made by NFS client.
readdir
Number of directory read requests made by NFS link.
readlink
Number of symbolic link reqd requests made by NFS client.
release_lock
Number of file lock release operations made by NFS client.
remove
Number of file remove requests made by NFS Client.
rename
Number of file rename requests made by NFS client.
renew
Number of renew operations made by NFS client to renew leases which are hold.
replicate
Number of replicate operations requests made by NFS client.
rmdir
Number of directory remove operation requests made by NFS client.
secinfo
Number of secinfo requests made by NFS Client to obtain a valid RPC authentication flavors for a specific file handle, file name pair.
setattr
Number of setattr operation requests made by NFS Client.
set_clientid
Number of Client Negotiation requests made by NFS Client.
set_clientid
Number of Client confirm requests made by NFS Client.
statfs
Number of statfs calls made by NFS client.
symlink
Number of symlink create requests made by NFS Client.
unlock
Number of file unlock requests made by NFS client.
write
Number of file write requests made by NFS client.