Commit Graph

1140 Commits

Author SHA1 Message Date
des
769bb0eeec Rename the signpackages target to sign-packages, and include it in the
packages meta-target so 'make packages' now does everything.
2016-02-08 16:34:13 +00:00
des
234fc137b1 Split the packages target into stage-packages and create-packages to make
it possible to roll new packages from an existing build without having to
restage them.
2016-02-08 16:08:13 +00:00
gjb
a44dc347a7 MFH
Sponsored by:	The FreeBSD Foundation
2016-02-08 12:16:01 +00:00
ngie
464f9f5378 Simplify running the FreeBSD test suite
Replace `make regress` (legacy test make target) and `make test` (incomplete
test make target added with the FreeBSD test suite) with make check as it's
consistent with other open source projects.

`make check` defaults to running tests from `.OBJDIR`, but can be overridden
with the `CHECKDIR` variable.

Add `make checkworld` target to simplify running the FreeBSD test suite from
`TESTSBASE` (i.e. the top-level tests directory), similar to buildworld.

Document `make check` and `make checkworld` in build(7).

Other minor changes:

- Rename intermediate file (`Kyuafile.auto`) to `Kyuafile` to simplify
  `make check`.
- Remove terse warnings attached to `beforetest`/`aftertest`.
- Add kyua binary check to check target in suite.test.mk; error out if it's
  not found

The MFC is [partly] contingent on other build related changes being MFCed.

Differential Revision: https://reviews.freebsd.org/D4406
MFC after: 2 months
X-MFC to: stable/10
Relnotes: yes
Reviewed by: bdrewery, Evan Cramer <eccramer@gmail.com>
Sponsored by: EMC / Isilon Storage Division
2016-02-07 18:40:04 +00:00
gjb
b2c7db6be1 Silence a few command lines.
Sponsored by:	The FreeBSD Foundation
2016-02-05 00:43:42 +00:00
gjb
92f18f7e58 Rework the way <packagename>.ucl files are generated.
One of the major pain points with how this was implemented
is the requirement of in-tree, hard-coded <name>.ucl, as
well as <name>-<suffix>.ucl where <suffix> can be lib32,
profile, development, debug, or any combination of the four.

This created significant overhead when adding new packages
and any of the files in any of the combinations were missing.

Instead of test(1)-ing if the <packagename>.ucl file exists,
hand off to a script to figure out what the final ucl file
name should be before invoking pkg(8).

The default behavior is 'template.ucl' is used as a fallback.

This affects only the userland packages, as the kernel code
is already smart enough to handle these variations.

Sponsored by:	The FreeBSD Foundation
2016-02-04 15:32:03 +00:00
bdrewery
3e3f3a4c0f Deduplicate distrib-dirs logic from r289086 in distribution.
This does it correctly this time, rather than the incorrect version in
r295167.

Sponsored by:	EMC / Isilon Storage Division
2016-02-03 20:24:21 +00:00
gjb
467dadb17d MFH
Sponsored by:	The FreeBSD Foundation
2016-02-03 02:02:01 +00:00
cem
d8a6a1cf14 Revert r295167 at bdrewery's request
$ svn merge -c -295167 .

JHB reports Navdeep reports that it breaks distribution and etcupdate.

Approved by:	bdrewery
2016-02-03 01:40:07 +00:00
gjb
efd5551e55 MFH
Sponsored by:	The FreeBSD Foundation
2016-02-02 22:27:48 +00:00
bdrewery
0e3e47574b Deduplicate distrib-dirs logic from r289086 in distribution.
Sponsored by:	EMC / Isilon Storage Division
2016-02-02 21:11:23 +00:00
bdrewery
d11470578c Adjust install .WAITs for lib/ and etc/ to allow parallelization more.
Only 'installworld' needs to be protected and only when not using
-DNO_ROOT, which implies not installing to / and not needing the
lib dependency protections.

Sponsored by:	EMC / Isilon Storage Division
2016-02-02 20:50:09 +00:00
gjb
60147cf248 Wrap long lines after recent commits.
Sponsored by:	The FreeBSD Foundation
2016-01-29 21:42:27 +00:00
gjb
1ca9246327 Make sure 'pkg config ABI' uses ABI_FILE for the target.
Sponsored by:	The FreeBSD Foundation
2016-01-29 21:39:44 +00:00
gjb
7fd16a47bf Reorder execution in the 'packages' target so both userland
and kernel are staged before invoking the 'create-<foo>-packages'
targets.

Include PKG_VERSION value in the 'create-{world,kernel}-packages'
targets so the value is not redefined when packaging the kernel,
which otherwise results in inconsistent and confusing package
version results.

Sponsored by:	The FreeBSD Foundation
2016-01-29 17:05:30 +00:00
gjb
d935c3599c Avoid excessively invoking 'pkg bootstrap' if already done.
Sponsored by:	The FreeBSD Foundation
2016-01-28 23:59:34 +00:00
gjb
f797ddeb13 Fix naming for multiple kernels when building/packaging more than one.
Sponsored by:	The FreeBSD Foundation
2016-01-27 21:24:45 +00:00
gjb
8c18d56f01 Add 'stagekernel' target, which invokes 'distributekernel'
with -DNO_ROOT to create the METALOG mtree(8) file.

Separate the default STAGEDIR for world (WSTAGEDIR) and kernel
(KSTAGEDIR).

Fix the 'create-kernel-packages' target to work properly.

Evaluate if 'kernel' is set when invoking mtree-to-plist.awk,
which splits the kernel and kernel.debug into separate plist
files.

Fix METALOG creation when building/packaging multiple kernels.

Sponsored by:	The FreeBSD Foundation
2016-01-27 21:10:03 +00:00
gjb
38c2fa8095 Add a 'signpackages' target, which creates the pkg repository
metadata files and uses the path of PKGSIGNKEY for signing,
if set.

Sponsored by:	The FreeBSD Foundation
2016-01-25 16:18:08 +00:00
gjb
146806cdf8 Create a _pkgbootstrap target, and remove the env(1) prefix
to pkg(8) commands.

Move the resulting packages outside STAGEDIR to minimize
pollution.

When invoking 'pkg create', include the ABI in the REPODIR
path so the correct hierarchy is created for cross-builds.

Move the STAGEDIR and REPODIR declarations above the targets
that use them to keep things cleaner, and move the packages
target.

Include '-o ABIFILE=DESTDIR/bin/sh' in pkg(8) invocations in
the create-kernel-packages target.

Sponsored by:	The FreeBSD Foundation
2016-01-22 18:06:09 +00:00
gjb
76559fbd4a Ensure pkg(8) is bootstrapped, and avoid prompting for confirmation
to install, in case the 'packages' target is run non-interactively.

Sponsored by:	The FreeBSD Foundation
2016-01-21 21:42:06 +00:00
gjb
c036d05fd1 MFH
Sponsored by:	The FreeBSD Foundation
2016-01-12 01:23:45 +00:00
bdrewery
8bb6f22f29 Correct a comment.
Submitted by:	jhb
2016-01-11 20:27:05 +00:00
bdrewery
f1d7628d6b Chase r292622: Update path to ioctl.c for incremental build hack.
Sponsored by:	EMC / Isilon Storage Division
2016-01-08 22:59:49 +00:00
bdrewery
9542702900 Fix upgrading from OSVERSION 1000002-1000032 after r288829.
r288829 states that lex requires the latest m4, but was not always building it.
Move lex to the same logic as m4 since they are closely tied now.

MFC after:	3 days
Sponsored by:	EMC / Isilon Storage Division
Reported by:	Slawa Olhovchenkov <slw@zxy.spb.ru>
2016-01-08 21:07:34 +00:00
gjb
46171d6b45 MFH
Sponsored by:	The FreeBSD Foundation
2016-01-07 17:23:43 +00:00
glebius
22ac5b2c8b Provide knob NO_INSTALLEXTRAKERNELS. If defined, extra kernels in KERNCONF
won't be installed, only the first one would.
2016-01-06 21:58:45 +00:00
gjb
d198514d72 MFH
Sponsored by:	The FreeBSD Foundation
2016-01-05 21:12:49 +00:00
gjb
b2615ed1dd Merge ^/projects/release-install-debug:
- Rework MANIFEST generation and parsing via bsdinstall(8).
- Allow selecting debugging distribution sets during install.
- Rework bsdinstall(8) to fetch remote debug distribution sets
  when they are not available on the local install medium.
- Allow selecting additional non-GENERIC kernels during install.
  At present, GENERIC is still required, and installed by default.

Tested with:	head@r293203
Sponsored by:	The FreeBSD Foundation
2016-01-05 21:05:17 +00:00
gjb
b779a5daf7 In 'create-kernel-packages', do not exit with an error if NO_ROOT is
not set.  The 'stageworld' target is invoked with -DNO_ROOT, so the
metalog file(s) will be created regardless.

This matches the behavior of 'create-world-packages'.

Sponsored by:	The FreeBSD Foundation
2016-01-05 18:05:31 +00:00
gjb
df6b8c0f79 Do not implicitly invoke 'buildworld' as part of the 'packages' target.
This retains the original behavior of release-related targets, which
assume 'buildworld' and 'buildkernel' have already happened.

Sponsored by:	The FreeBSD Foundation
2016-01-05 15:50:50 +00:00
gjb
ccde53b74b MFH r289384-r293170
Sponsored by:	The FreeBSD Foundation
2016-01-04 19:19:48 +00:00
sbruno
b0d75eeff3 Fixup native-xtools target for poudriere cross build jails after svn
r291955 by excluding all debug files.

Reported by:	swills

Reviewed by:	emaste
2015-12-23 21:55:54 +00:00
ngie
51188989cf Always expose LOCALBASE, not just when CROSS_TOOLCHAIN is defined
Instead of using which(1) to look for doxygen, look for it in <LOCALBASE>/bin .
$PATH gets mangled by make buildenv, etc so it's better to just be explicit
about the path if someone uses that for instance.

Differential Revision: https://reviews.freebsd.org/D4406 (part of a larger diff)
Reviewed by: emaste, Evan Cramer <eccramer@gmail.com>
Sponsored by: EMC / Isilon Storage Division
2015-12-20 05:52:03 +00:00
bdrewery
7f5e20fb23 Follow-up r290423: Don't use CSH for buildenv shell.
It does not properly import PATH; the PATH is reset by included profile
files on startup which breaks the biggest feature of buildenv (using
sysrooted cc from WORLDTMP)

Spotted by:	smh, kib
Sponsored by:	EMC / Isilon Storage Division
2015-12-14 23:25:31 +00:00
andrew
123d7ec9f3 Split KNOWN_ARCHES so we have one per line to simplify merging future
architectures.
2015-12-14 09:52:09 +00:00
br
e10e8212ee Start support for the RISC-V 64-bit architecture developed by UC Berkeley.
RISC-V is a new ISA designed to support computer research and education, and
is now become a standard open architecture for industry implementations.

This is a minimal set of changes required to run 'make kernel-toolchain'
using external (GNU) toolchain.

The FreeBSD/RISC-V project home: https://wiki.freebsd.org/riscv.

Reviewed by:	andrew, bdrewery, emaste, imp
Sponsored by:	DARPA, AFRL
Sponsored by:	HEIF5
Differential Revision:	https://reviews.freebsd.org/D4445
2015-12-11 22:55:23 +00:00
bdrewery
f59bd72b74 Fix some makeman issues.
- Don't bother looking up REVISION/BRANCH/etc from release/, or the
  CPUTYPE check, as these are not used for makeman and wastes time.  The also
  invokes auto.obj.mk after I reverted auto.obj.mk ignoring -V in r291312.
- Don't modify CC or PATH when WITH_CCACHE_BUILD or WITH_META_MODE is enabled
  as it leads to bsd.compiler.mk errors.

Sponsored by:	EMC / Isilon Storage Division
2015-12-08 17:09:17 +00:00
bdrewery
1c18c3c8de Fix spelling of internal hack.
Reported by:	ngie
2015-12-07 18:45:55 +00:00
bdrewery
40902c5e70 bsd.subdir.mk: Only recurse on called targets, rather than dependencies.
This is to fix 'make all' causing it to recurse on both 'all' and 'buildconfig'
due to 'buildconfig' being in ALL_SUBDIR_TARGETS and being a dependency of
'all'.

This now adds all of the '*includes', '*files' targets as subdir targets,
allowing them to recurse.

This also removes the need for some 'realinstall' hacks in bsd.subdir.mk since
it no longer recurses; only 'install' will recurse and call the proper
'beforeinstall', 'realinstall', and 'afterinstall' in each sub-directory.

This fixes 'make includes' and 'make files' to not be a rerolled ${MAKE}
sub-shell but to rather just recurse on 'inclues' and 'files'.  This avoids
various issues such as the one fixed in r289462.  As such revert Makefile.inc1
back to using 'includes' which avoids an extra tree walk and parallelizes
the includes phases better.

Makefile.inc1 includes a guard so that 'make all' will not use SUBDIR_PARALLEL,
added in r289438.  This is so users do not get a probably broken build if they
run 'make all' from the top-level.  Before the change in this commit, the
workaround for 'make everything' was 'par-all' which would depend on 'all' and
cause a proper parallel recursion.  Now that will not work so a new
_PARALLEL_SUBUDIR_OK is used to allow it.

This is still part of an effort to combine bsd.(files|incs|confs).mk and move
some of its logic out of bsd.subdir.mk, as attempted in r289282 and reverted in
r289331.  This commit fixes the problems found there which was mostly double
recursing during 'includes' which would recurse on itself and 'buildincludes'
and 'installincludes', all in parallel.  The logic is still in bsd.subdir.mk
for now.

I've been cautious about this commit but have experienced no breakage on the
tree except for the 'par-all' case which was already a hack.  If something foo
is depending on something bar that should recurse, it is very likely that the
foo target is being recursed on already meaning that bar will still effectively
recurse once sub-directories call foo.

Discussed on:	arch@
MFC after:	never
Sponsored by:	EMC / Isilon Storage Division
2015-12-02 01:50:22 +00:00
bdrewery
3f15eb4195 Add NO_INSTALLKERNEL to undo the assumption that the first KERNCONF will be
installed as "kernel".  This is relevant for packaging of the kernel when
not wanting a default "kernel.txz".

Submitted by:	Russell Cattelan <cattelan@thebarn.com>
MFC after:	2 weeks
Obtained from:	OneFS
Sponsored by:	EMC / Isilon Storage Division
2015-12-01 20:24:58 +00:00
bdrewery
831e725ec6 Allow storing package(world|kernel) tarballs into a different location at PACKAGEDIR.
Submitted by:	Russell Cattelan <cattelan@thebarn.com>
Discussed with:	gjb
MFC after:	2 weeks
Obtained from:	OneFS
Sponsored by:	EMC / Isilon Storage Division
2015-12-01 19:58:08 +00:00
bdrewery
db2cac2a60 Fix errors being ignored in many phases of the build since the bmake integration.
Say it with me, "I will not chain commands with && in Makefiles"

This was originally fixed and explained quite well by bde@ in r36074.  The
initial bmake integration caused 'set -e' to stop being used which lead to
r252419.  Later 'set -e' expectations were fixed with bmake in r254980.

Because of the && here, errors would be ignored when building in parallel and
a dependency failed.  Such as bootstrap-tools since it builds everything in
parallel.  If any tool failed in obj/depend/all, it would just ignore the error
and continue to build.  This later would result in cascaded errors that only
confused the real issue.  This could also cause commands after the failed
command to still execute, leading to more confusion.

This should be fine if the command is in a sub-shell such as: (cmd1 && cmd2)

This reverts r252419.

MFC after:	1 week
Sponsored by:	EMC / Isilon Storage Division
2015-12-01 19:00:43 +00:00
jhb
ab35544b83 Add support to libkvm for reading vmcores from other architectures.
- Add a kvaddr_type to represent kernel virtual addresses instead of
  unsigned long.
- Add a struct kvm_nlist which is a stripped down version of struct nlist
  that uses kvaddr_t for n_value.
- Add a kvm_native() routine that returns true if an open kvm descriptor
  is for a native kernel and memory image.
- Add a kvm_open2() function similar to kvm_openfiles().  It drops the
  unused 'swapfile' argument and adds a new function pointer argument for
  a symbol resolving function.  Native kernels still use _fdnlist() from
  libc to resolve symbols if a resolver function is not supplied, but cross
  kernels require a resolver.
- Add a kvm_nlist2() function similar to kvm_nlist() except that it uses
  struct kvm_nlist instead of struct nlist.
- Add a kvm_read2() function similar to kvm_read() except that it uses
  kvaddr_t instead of unsigned long for the kernel virtual address.
- Add a new kvm_arch switch of routines needed by a vmcore backend.
  Each backend is responsible for implementing kvm_read2() for a given
  vmcore format.
- Use libelf to read headers from ELF kernels and cores (except for
  powerpc cores).
- Add internal helper routines for the common page offset hash table used
  by the minidump backends.
- Port all of the existing kvm backends to implement a kvm_arch switch and
  to be cross-friendly by using private constants instead of ones that
  vary by platform (e.g. PAGE_SIZE).  Static assertions are present when
  a given backend is compiled natively to ensure the private constants
  match the real ones.
- Enable all of the existing vmcore backends on all platforms.  This means
  that libkvm on any platform should be able to perform KVA translation
  and read data from a vmcore of any platform.

Tested on:	amd64, i386, sparc64 (marius)
Differential Revision:	https://reviews.freebsd.org/D3341
2015-11-27 18:58:26 +00:00
bdrewery
c372459ab7 Remove unneeded libmd from bootstrap-tools (reverting r246784).
The bootstrap-tools are supposed to be host tools, which in most cases, use
host headers and libraries.  As such, directly including the src tree's headers
for libmd here causes the need to link libmd in since it will be built with
the new symbols (which /usr/lib/libmd.so) won't have unless it is new enough.
During the target build in buildworld the target headers are staged into
WORLDTMP and used via --sysroot, allowing the target xinstall to be built with
the new/target libmd.

The .PATH here was also not doing anything since xinstall does not use libmd
source files.

Sponsored by:	EMC / Isilon Storage Division
MFC after:	2 weeks
2015-11-18 21:37:46 +00:00
brd
5d59c4849b Don't match on "version" when found as a value.
Approved by:	bapt
2015-11-17 21:10:15 +00:00
bdrewery
8805597c1b Avoid setting schg in the objtree for lib32 build.
Reported by:	kib
Sponsored by:	EMC / Isilon Storage Division
MFC after:	1 week
2015-11-14 01:45:37 +00:00
bdrewery
264ecbcdcd Fix 'make cleanworld' to respect TARGET/TARGET_ARCH for cross-build objtrees.
This simplifies the logic to always try removing the objdir if it exists
and to fallback on a 'cleandir' if no objdir exists.  The reasoning for
this is to avoid rm -rf src/* (r126024)

Sponsored by:	EMC / Isilon Storage Division
MFC after:	2 weeks
2015-11-09 23:36:57 +00:00
bdrewery
d7fb1920af Move 'make cleandir' from Makefile to Makefile.inc1.
This leads the way for fixing cross-build cleanup, and eventually replacing
'cleandir' with it during the build.

Sponsored by:	EMC / Isilon Storage Division
MFC after:	2 weeks
2015-11-09 23:36:46 +00:00
bdrewery
11710a073f Add built-in ccache build support via WITH_CCACHE_BUILD option.
ccache is mostly beneficial for frequent builds where -DNO_CLEAN is not
used to achieve a safe pseudo-incremental build.  This is explained in
more detail upstream [1] [2].  It incurs about a 20%-28% hit to populate the
cache, but with a full cache saves 30-50% in build times.  When combined with
the WITH_FAST_DEPEND feature it saves up to 65% since ccache does cache the
resulting dependency file, which it does not do when using mkdep(1)/'CC
-E'.  Stats are provided at the end of this message.

This removes the need to modify /etc/make.conf with the CC:= and CXX:=
lines which conflicted with external compiler support [3] (causing the
bootstrap compiler to not be built which lead to obscure failures [4]),
incorrectly invoked ccache in various stages, required CCACHE_CPP2 to avoid
Clang errors with parenthesis, and did not work with META_MODE.

The option name was picked to match the existing option in ports.  This
feature is available for both in-src and out-of-src builds that use
/usr/share/mk.

Linking, assembly compiles, and pre-processing avoid using ccache since it is
only overhead.  ccache does nothing special in these modes, although there is
no harm in calling it for them.

CCACHE_COMPILERCHECK is set to 'content' when using the in-tree bootstrap
compiler to hash the content of the compiler binary to determine if it
should be a cache miss.  For external compilers the 'mtime' option is used
as it is more efficient and likely to be correct.  Future work may optimize the
'content' check using the same checks as whether a bootstrap compiler is needed
to be built.

The CCACHE_CPP2 pessimization is currently default in our devel/ccache
port due to Clang requiring it.  Clang's -Wparentheses-equality,
-Wtautological-compare, and -Wself-assign warnings do not mix well with
compiling already-pre-processed code that may have expanded macros that
trigger the warnings.  GCC has so far not had this issue so it is allowed to
disable the CCACHE_CPP2 default in our port.

Sharing a cache between multiple checkouts, or systems, is explained in
the ccache manual.  Sharing a cache over NFS would likely not be worth
it, but syncing cache directories between systems may be useful for an
organization.  There is also a memcached backend available [5].  Due to using
an object directory outside of the source directory though you will need to
ensure that both are in the same prefix and all users use the same layout.  A
possible working layout is as follows:
  Source: /some/prefix/src1
  Source: /some/prefix/src2
  Source: /some/prefix/src3
  Objdir: /some/prefix/obj
  Environment: CCACHE_BASEDIR='${SRCTOP:H}' MAKEOBJDIRPREFIX='${SRCTOP:H}/obj'
This will use src*/../obj as the MAKEOBJDIRPREFIX and tells ccache to replace
all absolute paths to be relative.  Using something like this is required due
to -I and -o flags containing both SRC and OBJDIR absolute paths that ccache
adds into its hash for the object without CCACHE_BASEDIR.

distcc can be hooked into by setting CCACHE_PREFIX=/usr/local/bin/distcc.
I have not personally tested this and assume it will not mix well with
using the bootstrap compiler.

The cache from buildworld can be reused in a subdir by first running
'make buildenv' (from r290424).

Note that the cache is currently different depending on whether -j is
used or not due to ccache enabling -fdiagnostics-color automatically if
stderr is a TTY, which bmake only does if not using -j.

The system I used for testing was:
  WITNESS
  Build options: -j20 WITH_LLDB=yes WITH_DEBUG_FILES=yes WITH_CCACHE_BUILD=yes
  DISK: ZFS 3-way mirror with very slow disks using SSD l2arc/log.
        The arc was fully populated with src tree files and ccache objects.
  RAM: 76GiB
  CPU: Intel(R) Xeon(R) CPU L5520 @2.27GHz
       2 package(s) x 4 core(s) x 2 SMT threads = hw.ncpu=16

The WITH_FAST_DEPEND feature was used for comparison here as well to show
the dramatic time savings with a full cache.

buildworld:
  x buildworld-before
  + buildworld-ccache-empty
  * buildworld-ccache-full
  % buildworld-ccache-full-fastdep
  # buildworld-fastdep
  +-------------------------------------------------------------------------------+
  |%            *                               #                                +|
  |%            *                               #                                +|
  |%            *                               #             xxx                +|
  |                                                           |A                  |
  |                                                                              A|
  |             A                                                                 |
  |A                                                                              |
  |                                             A                                 |
  +-------------------------------------------------------------------------------+
      N           Min           Max        Median           Avg        Stddev
  x   3       3744.13       3794.31       3752.25     3763.5633     26.935139
  +   3          4519       4525.04       4520.73       4521.59     3.1104823
  Difference at 95.0% confidence
          758.027 +/- 43.4565
          20.1412% +/- 1.15466%
          (Student's t, pooled s = 19.1726)
  *   3       1823.08        1827.2       1825.62        1825.3     2.0785572
  Difference at 95.0% confidence
          -1938.26 +/- 43.298
          -51.5007% +/- 1.15045%
          (Student's t, pooled s = 19.1026)
  %   3       1266.96       1279.37       1270.47     1272.2667     6.3971113
  Difference at 95.0% confidence
          -2491.3 +/- 44.3704
          -66.1952% +/- 1.17895%
          (Student's t, pooled s = 19.5758)
  #   3       3153.34       3155.16        3154.2     3154.2333    0.91045776
  Difference at 95.0% confidence
          -609.33 +/- 43.1943
          -16.1902% +/- 1.1477%
          (Student's t, pooled s = 19.0569)

buildkernel:
  x buildkernel-before
  + buildkernel-ccache-empty
  * buildkernel-ccache-empty-fastdep
  % buildkernel-ccache-full
  # buildkernel-ccache-full-fastdep
  @ buildkernel-fastdep
  +-------------------------------------------------------------------------------+
  |#                        @   %                  *                              |
  |#                        @   %                  *     x                      + |
  |#                        @   %                  *     xx                     ++|
  |                                                      MA                       |
  |                                                                             MA|
  |                                                A                              |
  |                             A                                                 |
  |A                                                                              |
  |                         A                                                     |
  +-------------------------------------------------------------------------------+
      N           Min           Max        Median           Avg        Stddev
  x   3        571.57        573.94        571.79     572.43333     1.3094401
  +   3        727.97        731.91        728.06     729.31333     2.2492295
  Difference at 95.0% confidence
          156.88 +/- 4.17129
          27.4058% +/- 0.728695%
          (Student's t, pooled s = 1.84034)
  *   3         527.1        528.29        528.08     527.82333    0.63516402
  Difference at 95.0% confidence
          -44.61 +/- 2.33254
          -7.79305% +/- 0.407478%
          (Student's t, pooled s = 1.02909)
  %   3         400.4        401.05        400.62        400.69     0.3306055
  Difference at 95.0% confidence
          -171.743 +/- 2.16453
          -30.0023% +/- 0.378128%
          (Student's t, pooled s = 0.954969)
  #   3        201.94        203.34        202.28        202.52    0.73020545
  Difference at 95.0% confidence
          -369.913 +/- 2.40293
          -64.6212% +/- 0.419774%
          (Student's t, pooled s = 1.06015)
  @   3        369.12        370.57         369.3     369.66333    0.79033748
  Difference at 95.0% confidence
          -202.77 +/- 2.45131
          -35.4225% +/- 0.428227%
          (Student's t, pooled s = 1.0815)

[1] https://ccache.samba.org/performance.html
[2] http://www.mail-archive.com/ccache@lists.samba.org/msg00576.html
[3] https://reviews.freebsd.org/D3484
[5] https://github.com/jrosdahl/ccache/pull/30

PR:		182944 [4]
MFC after:	3 weeks
Sponsored by:	EMC / Isilon Storage Division
Relnotes:	yes
2015-11-08 00:50:18 +00:00