Lines Matching +full:low +full:- +full:bandwidth

31 .Sh SYSTEM SETUP - DISKLABEL, NEWFS, TUNEFS, SWAP
63 partitions are read-mostly, with very little writing, while
68 heavily write-loaded partitions will not bleed over into the mostly-read
81 .Dq Li "tunefs -n enable /filesystem" .
82 Softupdates drastically improves meta-data performance, mainly file
103 A number of run-time
117 file systems normally update the last-accessed time of a file or
138 atime turned on for mostly read-only partitions such as
161 or essentially read-only partitions such as
170 File systems tend to store meta-data on power-of-2 boundaries
173 means you want to use a large off-center stripe size such as 1152 sectors
174 so sequential I/O does not seek both disks and so meta-data is distributed
179 run-time.
195 reservation, both total for system and per-user.
236 to fall back to using double-copy.
249 of internal memory management page-tracking overhead at the cost of wiring
268 the minimum in-core memory used to cache a directory is the physical page
270 We recommend turning this option off in memory-constrained environments;
292 disk controllers system-wide at any given time.
294 The default is self-tuned and
309 sysctl governs VFS read-ahead and is expressed as the number of blocks
310 to pre-read if the heuristics algorithm decides that the reads are
319 read-ahead adversely affects performance or where system memory is really
340 There are various other buffer-cache and VM page cache related sysctls.
354 improve bandwidth utilization by increasing the default at the cost of
361 high bandwidth over a fewer number of connections, especially if you have
369 can be used to introduce route-specific send and receive buffer size
375 to limit the bandwidth going to or from particular IP blocks or ports.
377 to 70% of the T1's bandwidth in order to leave the remainder available
384 bandwidth limitations in order to ensure that they are not charged for
385 using too much bandwidth.
395 high-latency satellite links.
438 slightly delay the teardown of a connection, or slightly delay the ramp-up
439 of a slow-start TCP connection.
442 turning off delayed acks may be referring to the slow-start issue.
448 There are three ranges: a low range, a default range, and a
475 may block large ranges of ports (usually low-numbered ports) and expect systems
484 The default value of 128 is typically too low for robust handling of new
501 thousand if you are running databases or large descriptor-heavy daemons.
502 The read-only
518 the system, and may be determined at run-time by inspecting the value of the
519 read-only
564 lead to a boot-time crash.
591 a large-scale system.
626 will be able to better use higher-end CPU features for MMU, task switching,
628 Additionally, higher-end CPUs support