IBM Sterling Connect:Direct : Performance on AIX

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= AIX Tuning =

Networking
Check the current values of the network tuning parameters:

no -a | more

or

ifconfig en0 en0: ...        tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0

Tuning for Performance

Other Attributes


 * ipv6 offload -> ipv6 offload are configured independently from ipv4 offload
 * num of tx queues -> The number of transmit queues
 * sz of tx queue -> The size of transmit queues
 * num of rx queues -> The number of receive queues
 * sz of rx queue -> The size of receive queues
 * sz of sw tx queue -> The size of software transmit queue.
 * intr_cnt -> Interrupt coalescing counter
 * intr_time -> Interrupt coalescing timer (microseconds)

Sample commands:

/usr/sbin/no -o udp_sendspace=65536 /usr/sbin/no -o udp_recvspace=655360 /usr/sbin/no -o tcp_sendspace=262144 /usr/sbin/no -o tcp_recvspace=262144 /usr/sbin/no -o rfc1323=1 /usr/sbin/no -o sb_max=4194304 /usr/sbin/no -o ipqmaxlen=512

File descriptors (ulimit)
Specifies the various restrictions on resource usage on the user account.

Check the change with the following command

... open files                     (-n) 2000
 * 1) ulimit -a

Perform the following steps to change the open file limit to 10,000 files. Edit the /etc/security/limits file.

nofiles = 10000 nofiles_hard = 10000

Save and close the file, logoff from the system, and logon again

= Articles =
 * AIX:Erro "File too large" ao realizar scp de um arquivo para o AIX


 * Connect:Direct for UNIX: File Transfer Performance


 * Tune AIX operating system for WebSphere Application Server


 * AIX Network Tuning for 10Ge and Virtual Network


 * Tuning AIX Network Performance

= Ver também =


 * IBM Sterling
 * IBM Sterling Connect:Direct
 * Artigos sobre Cloud
 * Mais Artigos sobre Cloud / WebDev / Tecnologias