Lustre 1.6 Operations Manual

Variable
keepalive_idle
(30,Wc)
keepalive_intvl
(2,Wc)
keepalive_count
(10,Wc)
enable_irq_affinity
(0,Wc)
zc_min_frag
(2048,W)
Description
Time (in seconds) that a socket can remain idle before a keepalive
probe is sent. Setting this value to zero (0) disables keepalives.
Time (in seconds) to repeat unanswered keepalive probes. Setting
this value to zero (0) disables keepalives.
Number of unanswered keepalive probes before pronouncing
socket (hence peer) death.
Boolean that determines whether to enable IRQ affinity. The
default is zero (0).
When set, socklnd attempts to maximize performance by handling
device interrupts and data movement for particular (hardware)
interfaces on particular CPUs. This option is not available on all
platforms. This option requires an SMP system to exist and
produces best performance with multiple NICs. Systems with
multiple CPUs and a single NIC may see increase in the
performance with this parameter disabled.
Determines the minimum message fragment that should be
considered for zero-copy sends. Increasing it above the platform's
PAGE_SIZE disables all zero copy sends. This option is not
available on all platforms.
Chapter 31 Configuration Files and Module Parameters (man5) 31-9