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(-)share/man/man7/tuning.7 (-8 / +19 lines)
Lines 101-107 Link Here
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depends on the kind of temporary file usage you think you will need.
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depends on the kind of temporary file usage you think you will need.
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128M is
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128M is
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the minimum we recommend.
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the minimum we recommend.
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Also note that sysinstall will create a
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Also note that
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.Xr bsdinstall 8
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will create a
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.Pa /tmp
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.Pa /tmp
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directory.
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directory.
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Dedicating a partition for temporary file storage is important for
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Dedicating a partition for temporary file storage is important for
Lines 219-225 Link Here
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.Pp
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.Pp
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.Fx
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.Fx
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performs best when using 8K or 16K file system block sizes.
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performs best when using 8K or 16K file system block sizes.
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The default file system block size is 16K,
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The default file system block size is 32K,
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which provides best performance for most applications,
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which provides best performance for most applications,
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with the exception of those that perform random access on large files
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with the exception of those that perform random access on large files
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(such as database server software).
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(such as database server software).
Lines 286-292 Link Here
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option to
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option to
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.Xr newfs 8 ,
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.Xr newfs 8 ,
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and
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and
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.Xr sysinstall 8
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.Xr bsdinstall 8
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will typically enable softupdates automatically for non-root file systems).
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will typically enable softupdates automatically for non-root file systems).
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Softupdates drastically improves meta-data performance, mainly file
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Softupdates drastically improves meta-data performance, mainly file
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creation and deletion.
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creation and deletion.
Lines 525-532 Link Here
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to pre-read if the heuristics algorithm decides that the reads are
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to pre-read if the heuristics algorithm decides that the reads are
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issued sequentially.
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issued sequentially.
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It is used by the UFS, ext2fs and msdosfs file systems.
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It is used by the UFS, ext2fs and msdosfs file systems.
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With the default UFS block size of 16 KiB, a setting of 32 will allow
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With the default UFS block size of 32 KiB, a setting of 32 will allow
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speculatively reading up to 512 KiB.
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speculatively reading up to 1 MiB.
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This setting may be increased to get around disk I/O latencies, especially
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This setting may be increased to get around disk I/O latencies, especially
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where these latencies are large such as in virtual machine emulated
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where these latencies are large such as in virtual machine emulated
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environments.
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environments.
Lines 566-573 Link Here
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applications.
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applications.
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They control the amount of send and receive buffer space
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They control the amount of send and receive buffer space
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allowed for any given TCP connection.
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allowed for any given TCP connection.
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The default sending buffer is 32K; the default receiving buffer
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The default sending buffer is 128K; the default receiving buffer
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is 64K.
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is 256K.
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You can often
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You can often
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improve bandwidth utilization by increasing the default at the cost of
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improve bandwidth utilization by increasing the default at the cost of
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eating up more kernel memory for each connection.
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eating up more kernel memory for each connection.
Lines 873-878 Link Here
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Under no circumstances
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Under no circumstances
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should you specify an arbitrarily high value for this parameter, it could
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should you specify an arbitrarily high value for this parameter, it could
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lead to a boot-time crash.
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lead to a boot-time crash.
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Please note that some drivers, require larger values, and in some cases the
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interfaces will hang on probe, e.g. dual-port (in some configurations) or
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quad-port
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.Xr igb 4 ,
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or cause system panics, e.g.
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.Xr cxgb 4 ,
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if you set
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.Va kern.ipc.nmbclusters
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to something less than 50000 and 75000, respectively.
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The
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The
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.Fl m
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.Fl m
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option to
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option to
Lines 1041-1046 Link Here
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.Xr hier 7 ,
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.Xr hier 7 ,
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.Xr ports 7 ,
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.Xr ports 7 ,
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.Xr boot 8 ,
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.Xr boot 8 ,
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.Xr bsdinstall 8 ,
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.Xr bsdlabel 8 ,
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.Xr bsdlabel 8 ,
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.Xr ccdconfig 8 ,
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.Xr ccdconfig 8 ,
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.Xr config 8 ,
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.Xr config 8 ,
Lines 1055-1061 Link Here
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.Xr newfs 8 ,
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.Xr newfs 8 ,
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.Xr route 8 ,
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.Xr route 8 ,
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.Xr sysctl 8 ,
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.Xr sysctl 8 ,
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.Xr sysinstall 8 ,
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.Xr tunefs 8
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.Xr tunefs 8
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.Sh HISTORY
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.Sh HISTORY
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The
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The

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