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  1. 19 Aug, 2016 15 commits
    • Dmitry Vyukov's avatar
      runtime: increase malloc size classes · 14e59511
      Dmitry Vyukov authored 
      When we calculate class sizes, in some cases we discard considerable
amounts of memory without an apparent reason. For example, we choose
size 8448 with 6 objects in 7 pages. But we can well use object
size 9472, which is also 6 objects in 7 pages but +1024 bytes (+12.12%).

Increase class sizes to the max value that leads to the same
page count/number of objects. Full list of affected size classes:

class 36: pages: 2 size: 1664->1792 +128 (7.69%)
class 39: pages: 1 size: 2560->2688 +128 (5.0%)
class 40: pages: 3 size: 2816->3072 +256 (9.9%)
class 41: pages: 2 size: 3072->3200 +128 (4.16%)
class 42: pages: 3 size: 3328->3456 +128 (3.84%)
class 44: pages: 3 size: 4608->4864 +256 (5.55%)
class 47: pages: 4 size: 6400->6528 +128 (2.0%)
class 48: pages: 5 size: 6656->6784 +128 (1.92%)
class 51: pages: 7 size: 8448->9472 +1024 (12.12%)
class 52: pages: 6 size: 8704->9728 +1024 (11.76%)
class 53: pages: 5 size: 9472->10240 +768 (8.10%)
class 54: pages: 4 size: 10496->10880 +384 (3.65%)
class 57: pages: 7 size: 14080->14336 +256 (1.81%)
class 59: pages: 9 size: 16640->18432 +1792 (10.76%)
class 60: pages: 7 size: 17664->19072 +1408 (7.97%)
class 62: pages: 8 size: 21248->21760 +512 (2.40%)
class 64: pages: 10 size: 24832->27264 +2432 (9.79%)
class 65: pages: 7 size: 28416->28672 +256 (0.90%)

name                      old time/op    new time/op    delta
BinaryTree17-12              2.59s ± 5%     2.52s ± 4%    ~     (p=0.132 n=6+6)
Fannkuch11-12                2.13s ± 3%     2.17s ± 3%    ~     (p=0.180 n=6+6)
FmtFprintfEmpty-12          47.0ns ± 3%    46.6ns ± 1%    ~     (p=0.355 n=6+5)
FmtFprintfString-12          131ns ± 0%     131ns ± 1%    ~     (p=0.476 n=4+6)
FmtFprintfInt-12             121ns ± 6%     122ns ± 2%    ~     (p=0.511 n=6+6)
FmtFprintfIntInt-12          182ns ± 2%     186ns ± 1%  +2.20%  (p=0.015 n=6+6)
FmtFprintfPrefixedInt-12     184ns ± 5%     181ns ± 2%    ~     (p=0.645 n=6+6)
FmtFprintfFloat-12           272ns ± 7%     265ns ± 1%    ~     (p=1.000 n=6+5)
FmtManyArgs-12               783ns ± 2%     802ns ± 2%  +2.38%  (p=0.017 n=6+6)
GobDecode-12                7.04ms ± 4%    7.00ms ± 2%    ~     (p=1.000 n=6+6)
GobEncode-12                6.36ms ± 6%    6.17ms ± 6%    ~     (p=0.240 n=6+6)
Gzip-12                      242ms ±14%     233ms ± 7%    ~     (p=0.310 n=6+6)
Gunzip-12                   36.6ms ±22%    36.0ms ± 9%    ~     (p=0.841 n=5+5)
HTTPClientServer-12         93.1µs ±29%    88.0µs ±32%    ~     (p=0.240 n=6+6)
JSONEncode-12               27.1ms ±39%    26.2ms ±35%    ~     (p=0.589 n=6+6)
JSONDecode-12               71.7ms ±36%    71.5ms ±36%    ~     (p=0.937 n=6+6)
Mandelbrot200-12            4.78ms ±10%    4.70ms ±16%    ~     (p=0.394 n=6+6)
GoParse-12                  4.86ms ±34%    4.95ms ±36%    ~     (p=1.000 n=6+6)
RegexpMatchEasy0_32-12       110ns ±37%     110ns ±36%    ~     (p=0.660 n=6+6)
RegexpMatchEasy0_1K-12       240ns ±38%     234ns ±47%    ~     (p=0.554 n=6+6)
RegexpMatchEasy1_32-12      77.2ns ± 2%    77.2ns ±10%    ~     (p=0.699 n=6+6)
RegexpMatchEasy1_1K-12       337ns ± 5%     331ns ± 4%    ~     (p=0.552 n=6+6)
RegexpMatchMedium_32-12      125ns ±13%     132ns ±26%    ~     (p=0.561 n=6+6)
RegexpMatchMedium_1K-12     35.9µs ± 3%    36.1µs ± 5%    ~     (p=0.818 n=6+6)
RegexpMatchHard_32-12       1.81µs ± 4%    1.82µs ± 5%    ~     (p=0.452 n=5+5)
RegexpMatchHard_1K-12       52.4µs ± 2%    54.4µs ± 3%  +3.84%  (p=0.002 n=6+6)
Revcomp-12                   401ms ± 2%     390ms ± 1%  -2.82%  (p=0.002 n=6+6)
Template-12                 54.5ms ± 3%    54.6ms ± 1%    ~     (p=0.589 n=6+6)
TimeParse-12                 294ns ± 1%     298ns ± 2%    ~     (p=0.160 n=6+6)
TimeFormat-12                323ns ± 4%     318ns ± 5%    ~     (p=0.297 n=6+6)

name                      old speed      new speed      delta
GobDecode-12               109MB/s ± 4%   110MB/s ± 2%    ~     (p=1.000 n=6+6)
GobEncode-12               121MB/s ± 6%   125MB/s ± 6%    ~     (p=0.240 n=6+6)
Gzip-12                   80.4MB/s ±12%  83.3MB/s ± 7%    ~     (p=0.310 n=6+6)
Gunzip-12                  495MB/s ±41%   541MB/s ± 9%    ~     (p=0.931 n=6+5)
JSONEncode-12             80.7MB/s ±39%  82.8MB/s ±34%    ~     (p=0.589 n=6+6)
JSONDecode-12             30.4MB/s ±40%  31.0MB/s ±37%    ~     (p=0.937 n=6+6)
GoParse-12                13.2MB/s ±33%  13.2MB/s ±35%    ~     (p=1.000 n=6+6)
RegexpMatchEasy0_32-12     321MB/s ±34%   326MB/s ±34%    ~     (p=0.699 n=6+6)
RegexpMatchEasy0_1K-12    4.49GB/s ±31%  4.74GB/s ±37%    ~     (p=0.589 n=6+6)
RegexpMatchEasy1_32-12     414MB/s ± 2%   415MB/s ± 9%    ~     (p=0.699 n=6+6)
RegexpMatchEasy1_1K-12    3.03GB/s ± 5%  3.09GB/s ± 4%    ~     (p=0.699 n=6+6)
RegexpMatchMedium_32-12   7.99MB/s ±12%  7.68MB/s ±22%    ~     (p=0.589 n=6+6)
RegexpMatchMedium_1K-12   28.5MB/s ± 3%  28.4MB/s ± 5%    ~     (p=0.818 n=6+6)
RegexpMatchHard_32-12     17.7MB/s ± 4%  17.0MB/s ±15%    ~     (p=0.351 n=5+6)
RegexpMatchHard_1K-12     19.6MB/s ± 2%  18.8MB/s ± 3%  -3.67%  (p=0.002 n=6+6)
Revcomp-12                 634MB/s ± 2%   653MB/s ± 1%  +2.89%  (p=0.002 n=6+6)
Template-12               35.6MB/s ± 3%  35.5MB/s ± 1%    ~     (p=0.615 n=6+6)

Change-Id: I465a47f74227f316e3abea231444f48c7a30ef85
Reviewed-on: https://go-review.googlesource.com/24493
Run-TryBot: Dmitry Vyukov <dvyukov@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarKeith Randall <khr@golang.org>
Reviewed-by: default avatarAustin Clements <austin@google.com>
      14e59511
    • Jaana Burcu Dogan's avatar
      context: test WithCancel with canceled parent · ab9137dd
      Jaana Burcu Dogan authored 
      Change-Id: I32079cc12cfffb8520f0073a8b5119705dc0cd1b
Reviewed-on: https://go-review.googlesource.com/27401Reviewed-by: default avatarBrad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      ab9137dd
    • Austin Clements's avatar
      runtime: fix check for vacuous page boundary rounding again · 3de7dbb1
      Austin Clements authored 
      The previous fix for this, commit 336dad2a, had everything right in
the commit message, but reversed the test in the code. Fix the test in
the code.

This reversal effectively disabled the scavenger on large page systems
*except* in the rare cases where this code was originally wrong, which
is why it didn't obviously show up in testing.

Fixes #16644. Again. :(

Change-Id: I27cce4aea13de217197db4b628f17860f27ce83e
Reviewed-on: https://go-review.googlesource.com/27402
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: default avatarBrad Fitzpatrick <bradfitz@golang.org>
      3de7dbb1
    • Dmitry Vyukov's avatar
      internal/trace: fix analysis of EvGoWaiting/EvGoInSyscall events · a50f9859
      Dmitry Vyukov authored 
      When tracing is started in the middle of program execution,
we already have a number of runnable goroutines and a number
of blocked/in syscall goroutines. In order to reflect these
goroutines in the trace, we emit EvGoCreate for all existing
goroutines. Then for blocked/in syscall goroutines we additionally
emit EvGoWaiting/EvGoInSyscall events. These events don't reset g.ev
during trace analysis. So next EvGoStart finds g.ev set to the
previous EvGoCreate. As the result time between EvGoCreate and
EvGoStart is accounted as scheduler latency. While in reality
it is blocking/syscall time.

Properly reset g.ev for EvGoWaiting/EvGoInSyscall events.

Change-Id: I0615ba31ed7567600a0667ebb27458481da73adb
Reviewed-on: https://go-review.googlesource.com/25572Reviewed-by: default avatarHyang-Ah Hana Kim <hyangah@gmail.com>
      a50f9859
    • Brad Fitzpatrick's avatar
      io: fix infinite loop bug in MultiReader · 93372673
      Brad Fitzpatrick authored 
      If an io.Reader returned (non-zero, EOF), MultiReader would yield
bytes forever.

This bug has existed before Go 1 (!!), introduced in the original
MultiReader implementation in https://golang.org/cl/1764043 and also
survived basically the only update to this code since then
(https://golang.org/cl/17873, git rev ccdca832), which was added in
Go 1.7.

This just bit me when writing a test for some unrelated code.

Fixes #16795

Change-Id: I36e6a701269793935d19a47ac12f67b07179fbff
Reviewed-on: https://go-review.googlesource.com/27397
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarKeith Randall <khr@golang.org>
Reviewed-by: default avatarJoe Tsai <thebrokentoaster@gmail.com>
      93372673
    • Austin Clements's avatar
      runtime: fix out of date comments · 244efebe
      Austin Clements authored 
      The transition from mark 1 to mark 2 no longer enqueues new root
marking jobs, but some of the comments still refer to this. Fix these
comments.

Change-Id: I3f98628dba32c5afe30495ab495da42b32291e9e
Reviewed-on: https://go-review.googlesource.com/24965Reviewed-by: default avatarRick Hudson <rlh@golang.org>
      244efebe
    • Adam Langley's avatar
      crypto/x509: allow a leaf certificate to be specified directly as root. · 8ad70a54
      Adam Langley authored 
      In other systems, putting a leaf certificate in the root store works to
express that exactly that certificate is acceptable. This change makes
that work in Go too.

Fixes #16763.

Change-Id: I5c0a8dbc47aa631b23dd49061fb217ed8b0c719c
Reviewed-on: https://go-review.googlesource.com/27393
Run-TryBot: Adam Langley <agl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarBrad Fitzpatrick <bradfitz@golang.org>
      8ad70a54
    • Adam Langley's avatar
      crypto/x509: recognise ISO OID for RSA+SHA1 · bcd54f6c
      Adam Langley authored 
      For some reason, ISO decided to duplicate the OID for RSA+SHA1. Most
pertinantly, the makecert.exe utility on Windows is known to have used
this OID.

This change makes the ISO OID an alias for the normal one.

Change-Id: I60b76265bf1721282bdb0d5c99c98d227c18a878
Reviewed-on: https://go-review.googlesource.com/27394
Run-TryBot: Adam Langley <agl@golang.org>
Reviewed-by: default avatarBrad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      bcd54f6c
    • Adam Langley's avatar
      encoding/pem: be stricter about the ending line. · 0da545d1
      Adam Langley authored 
      Previously the code didn't check the type and final five dashes of the
ending line of a PEM block.

Fixes #16335.

Change-Id: Ia544e8739ea738d767cfe56c8d46204214ec0b5a
Reviewed-on: https://go-review.googlesource.com/27391
Run-TryBot: Adam Langley <agl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarBrad Fitzpatrick <bradfitz@golang.org>
      0da545d1
    • Brad Fitzpatrick's avatar
      cmd/internal/obj: update Bool2int to the form optimized by the compiler · a25a7ad7
      Brad Fitzpatrick authored 
      As of https://golang.org/cl/22711 the compiler optimizes this form.

Updates #6011

Change-Id: Ibc6c529dfa24d42f4aab78ebd6722e1d72cb6038
Reviewed-on: https://go-review.googlesource.com/27395Reviewed-by: default avatarJosh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      a25a7ad7
    • Matthew Dempsky's avatar
      cmd/compile/internal/syntax: match old parser errors and line numbers · 70544c91
      Matthew Dempsky authored 
      This makes a bunch of changes to package syntax to tweak line numbers
for AST nodes. For example, short variable declaration statements are
now associated with the location of the ":=" token, and function calls
are associated with the location of the final ")" token. These help
satisfy many unit tests that assume the old parser's behavior.

Because many of these changes are questionable, they're guarded behind
a new "gcCompat" const to make them easy to identify and revisit in
the future.

A handful of remaining tests are too difficult to make behave
identically. These have been updated to execute with -newparser=0 and
comments explaining why they need to be fixed.

all.bash now passes with both the old and new parsers.

Change-Id: Iab834b71ca8698d39269f261eb5c92a0d55a3bf4
Reviewed-on: https://go-review.googlesource.com/27199
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarRobert Griesemer <gri@golang.org>
      70544c91
    • Matthew Dempsky's avatar
      cmd/compile/internal/gc: use new AST parser · 2ff46394
      Matthew Dempsky authored 
      Introduce a new noder type to transform package syntax's AST into gc's
Node tree. Hidden behind a new -newparser flag.

Change-Id: Id0e862ef6196c41533876afc4ec289e21d422d18
Reviewed-on: https://go-review.googlesource.com/27198
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarRobert Griesemer <gri@golang.org>
      2ff46394
    • Matthew Dempsky's avatar
      cmd/compile/internal/syntax: expose additional information for gc · 11779362
      Matthew Dempsky authored 
      gc needs access to line offsets for Nodes. It also needs access to the
end line offset for function bodies so it knows what line number to
use for things like implicit returns and defer executions.

Lastly, include an extra bool to distinguish between simple and full
slice expressions. This is redundant in valid parse trees, but needed
by gc for producing complete warnings in invalid inputs.

Change-Id: I64baf334a35c72336d26fa6755c67eb9d6f4e93c
Reviewed-on: https://go-review.googlesource.com/27196Reviewed-by: default avatarRobert Griesemer <gri@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      11779362
    • Brad Fitzpatrick's avatar
      log/syslog: document that Dial uses net.Dial parameters, add example · 4e8c1137
      Brad Fitzpatrick authored 
      Fixes #16761

Change-Id: I709daa87926a31e5f8fd46a4c5ef69718ae349b1
Reviewed-on: https://go-review.googlesource.com/27209Reviewed-by: default avatarChris Broadfoot <cbro@golang.org>
      4e8c1137
    • Brad Fitzpatrick's avatar
      os: reference LookupEnv from the Getenv docs · 55ea153b
      Brad Fitzpatrick authored 
      Fixes #16782

Change-Id: If54917bf5ca1588d8a6d443c3aa6e1d4ada6b620
Reviewed-on: https://go-review.googlesource.com/27322Reviewed-by: default avataranatoly techtonik <techtonik@gmail.com>
Reviewed-by: default avatarIan Lance Taylor <iant@golang.org>
      55ea153b
  3. 18 Aug, 2016 21 commits
  5. 17 Aug, 2016 4 commits
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