The xz compression is slow; using multiple threads/cores yields a linear
performance improvement.
* guix/build/utils.scm (%xz-parallel-args): New procedure.
* guix/packages.scm (patch-and-repack): Specify the required above xz
arguments by setting the XZ_DEFAULTS environment variable.
* guix/scripts/pack.scm (%compressors, bootstrap-xz): Modify the commands
Gexps so they do not need to be quoted. This allows lazily evaluating the
arguments on the builder's side. Specify the required xz arguments.
(self-contained-tarball): Do not quote the compressor command value.
(docker-image): Likewise.
* guix/utils.scm (decompressed-port, compressed-port)
(compressed-output-port): Specify the required above xz arguments.
---
guix/build/utils.scm | 15 ++++++++++++++-
guix/packages.scm | 3 +++
guix/scripts/pack.scm | 27 ++++++++++++++++++---------
guix/utils.scm | 10 ++++++----
4 files changed, 41 insertions(+), 14 deletions(-)
Toggle diff (199 lines)
diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index e884c26a22..ff4241d088 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -112,7 +112,9 @@
make-desktop-entry-file
- locale-category->string))
+ locale-category->string
+
+ %xz-parallel-args))
;;;
@@ -1479,6 +1481,17 @@ returned."
LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE
LC_TIME)))
+
+;;;
+;;; Others.
+;;;
+
+(define (%xz-parallel-args)
+ "The xz arguments required to enable bit-reproducible, multi-threaded
+compression."
+ (list "--memlimit=50%"
+ (format #f "--threads=~a" (max 2 (parallel-job-count)))))
+
;;; Local Variables:
;;; eval: (put 'call-with-output-file/atomic 'scheme-indent-function 1)
;;; eval: (put 'call-with-ascii-input-file 'scheme-indent-function 1)
diff --git a/guix/packages.scm b/guix/packages.scm
index 6598bd3149..865cb81929 100644
--- a/guix/packages.scm
+++ b/guix/packages.scm
@@ -5,6 +5,7 @@
;;; Copyright © 2016 Alex Kost <alezost@gmail.com>
;;; Copyright © 2017, 2019, 2020 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2019 Marius Bakke <mbakke@fastmail.com>
+;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -693,6 +694,8 @@ specifies modules in scope when evaluating SNIPPET."
(setenv "PATH" (string-append #+xz "/bin" ":"
#+decomp "/bin"))
+ (setenv "XZ_DEFAULTS" (string-join (%xz-parallel-args)))
+
;; SOURCE may be either a directory or a tarball.
(if (file-is-directory? #+source)
(let* ((store (%store-directory))
diff --git a/guix/scripts/pack.scm b/guix/scripts/pack.scm
index 379e6a3ac6..a0112162e3 100644
--- a/guix/scripts/pack.scm
+++ b/guix/scripts/pack.scm
@@ -5,6 +5,7 @@
;;; Copyright © 2018 Chris Marusich <cmmarusich@gmail.com>
;;; Copyright © 2018 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2020 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -25,6 +26,7 @@
#:use-module (guix scripts)
#:use-module (guix ui)
#:use-module (guix gexp)
+ #:use-module ((guix build utils) #:select (%xz-parallel-args))
#:use-module (guix utils)
#:use-module (guix store)
#:use-module ((guix status) #:select (with-status-verbosity))
@@ -70,29 +72,34 @@
compressor?
(name compressor-name) ;string (e.g., "gzip")
(extension compressor-extension) ;string (e.g., ".lz")
- (command compressor-command)) ;gexp (e.g., #~("/gnu/store/…/gzip" "-9n"))
+ (command compressor-command)) ;gexp (e.g., #~(list "/gnu/store/…/gzip"
+ ; "-9n" ))
(define %compressors
;; Available compression tools.
(list (compressor "gzip" ".gz"
- #~(#+(file-append gzip "/bin/gzip") "-9n"))
+ #~(list #+(file-append gzip "/bin/gzip") "-9n"))
(compressor "lzip" ".lz"
- #~(#+(file-append lzip "/bin/lzip") "-9"))
+ #~(list #+(file-append lzip "/bin/lzip") "-9"))
(compressor "xz" ".xz"
- #~(#+(file-append xz "/bin/xz") "-e"))
+ #~(append (list #+(file-append xz "/bin/xz")
+ "-e")
+ (%xz-parallel-args)))
(compressor "bzip2" ".bz2"
- #~(#+(file-append bzip2 "/bin/bzip2") "-9"))
+ #~(list #+(file-append bzip2 "/bin/bzip2") "-9"))
(compressor "zstd" ".zst"
;; The default level 3 compresses better than gzip in a
;; fraction of the time, while the highest level 19
;; (de)compresses more slowly and worse than xz.
- #~(#+(file-append zstd "/bin/zstd") "-3"))
+ #~(list #+(file-append zstd "/bin/zstd") "-3"))
(compressor "none" "" #f)))
;; This one is only for use in this module, so don't put it in %compressors.
(define bootstrap-xz
(compressor "bootstrap-xz" ".xz"
- #~(#+(file-append %bootstrap-coreutils&co "/bin/xz") "-e")))
+ #~(append (list #+(file-append %bootstrap-coreutils&co "/bin/xz")
+ "-e")
+ (%xz-parallel-args))))
(define (lookup-compressor name)
"Return the compressor object called NAME. Error out if it could not be
@@ -269,7 +276,7 @@ added to the pack."
#+@(if (compressor-command compressor)
#~("-I"
(string-join
- '#+(compressor-command compressor)))
+ #+(compressor-command compressor)))
#~())
"--format=gnu"
@@ -541,11 +548,13 @@ the image."
,@(source-module-closure
`((guix docker)
(guix build store-copy)
+ (guix build utils) ;for %xz-parallel-args
(guix profiles)
(guix search-paths))
#:select? not-config?))
#~(begin
(use-modules (guix docker) (guix build store-copy)
+ (guix build utils)
(guix profiles) (guix search-paths)
(srfi srfi-1) (srfi srfi-19)
(ice-9 match))
@@ -602,7 +611,7 @@ the image."
#~(list (string-append #$profile "/"
#$entry-point)))
#:extra-files directives
- #:compressor '#+(compressor-command compressor)
+ #:compressor #+(compressor-command compressor)
#:creation-time (make-time time-utc 0 1))))))
(gexp->derivation (string-append name ".tar"
diff --git a/guix/utils.scm b/guix/utils.scm
index 7cc321205e..ba896623f4 100644
--- a/guix/utils.scm
+++ b/guix/utils.scm
@@ -8,6 +8,7 @@
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2018, 2020 Marius Bakke <marius@gnu.org>
;;; Copyright © 2020 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -37,7 +38,7 @@
#:use-module (guix memoization)
#:use-module ((guix build utils)
#:select (dump-port mkdir-p delete-file-recursively
- call-with-temporary-output-file))
+ call-with-temporary-output-file %xz-parallel-args))
#:use-module ((guix build syscalls) #:select (mkdtemp! fdatasync))
#:use-module (guix diagnostics) ;<location>, &error-location, etc.
#:use-module (ice-9 format)
@@ -220,7 +221,7 @@ a symbol such as 'xz."
(match compression
((or #f 'none) (values input '()))
('bzip2 (filtered-port `(,%bzip2 "-dc") input))
- ('xz (filtered-port `(,%xz "-dc") input))
+ ('xz (filtered-port `(,%xz "-dc" ,@(%xz-parallel-args)) input))
('gzip (filtered-port `(,%gzip "-dc") input))
('lzip (values (lzip-port 'make-lzip-input-port input)
'()))
@@ -232,7 +233,7 @@ a symbol such as 'xz."
(match compression
((or #f 'none) (values input '()))
('bzip2 (filtered-port `(,%bzip2 "-c") input))
- ('xz (filtered-port `(,%xz "-c") input))
+ ('xz (filtered-port `(,%xz "-c" ,@(%xz-parallel-args)) input))
('gzip (filtered-port `(,%gzip "-c") input))
('lzip (values (lzip-port 'make-lzip-input-port/compressed input)
'()))
@@ -291,7 +292,8 @@ program--e.g., '(\"--fast\")."
(match compression
((or #f 'none) (values output '()))
('bzip2 (filtered-output-port `(,%bzip2 "-c" ,@options) output))
- ('xz (filtered-output-port `(,%xz "-c" ,@options) output))
+ ('xz (filtered-output-port `(,%xz "-c" ,@(%xz-parallel-args)
+ ,@options) output))
('gzip (filtered-output-port `(,%gzip "-c" ,@options) output))
('lzip (values (lzip-port 'make-lzip-output-port output)
'()))
--
2.28.0
