[OE-core] [PATCH] image_types: use pigz to create .gz files

[Burton, Ross]

Woud be interesting to see a benchmark of a full build from scratch
with host gzip vs host pigz...

On 11 April 2018 at 17:03, Khem Raj <raj.khem at gmail.com> wrote:
> On Wed, Apr 11, 2018 at 6:36 AM, Burton, Ross <ross.burton at intel.com> wrote:
>> Wouldn't that introduce a fun circular dependency if pigz-native needs
>> to be built?
>>
>
> interesting idea certainly, if it ends up with improvements in build
> time, we could
> add pigz to host dependencies.
>
>> Ross
>>
>> On 11 April 2018 at 11:53, Martin Jansa <martin.jansa at gmail.com> wrote:
>>> What about using pigz for sstate-cache archives?
>>>
>>> On Tue, Apr 10, 2018 at 4:35 PM, Ross Burton <ross.burton at intel.com> wrote:
>>>>
>>>> Since pigz is no longer a drop-in replacement for gzip (oe-core 1624b7b)
>>>> the
>>>> image creation has been using gzip instead of pigz, despite still
>>>> depending on
>>>> pigz-native.  Fix this by invoking pigz explicitly.
>>>>
>>>> Signed-off-by: Ross Burton <ross.burton at intel.com>
>>>> ---
>>>>  meta/classes/image_types.bbclass | 2 +-
>>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/meta/classes/image_types.bbclass
>>>> b/meta/classes/image_types.bbclass
>>>> index e872ae20982..00a00d318f4 100644
>>>> --- a/meta/classes/image_types.bbclass
>>>> +++ b/meta/classes/image_types.bbclass
>>>> @@ -281,7 +281,7 @@ COMPRESSIONTYPES ?= ""
>>>>
>>>>  CONVERSIONTYPES = "gz bz2 lzma xz lz4 lzo zip sum md5sum sha1sum
>>>> sha224sum sha256sum sha384sum sha512sum bmap u-boot vmdk vdi qcow2
>>>> ${COMPRESSIONTYPES}"
>>>>  CONVERSION_CMD_lzma = "lzma -k -f -7
>>>> ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
>>>> -CONVERSION_CMD_gz = "gzip -f -9 -n -c
>>>> ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} >
>>>> ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.gz"
>>>> +CONVERSION_CMD_gz = "pigz -f -9 -n -c
>>>> ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} >
>>>> ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.gz"
>>>>  CONVERSION_CMD_bz2 = "pbzip2 -f -k
>>>> ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
>>>>  CONVERSION_CMD_xz = "xz -f -k -c ${XZ_COMPRESSION_LEVEL} ${XZ_THREADS}
>>>> --check=${XZ_INTEGRITY_CHECK} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} >
>>>> ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.xz"
>>>>  CONVERSION_CMD_lz4 = "lz4 -9 -z -l
>>>> ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}
>>>> ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.lz4"
>>>> --
>>>> 2.11.0
>>>>
>>>> --
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>>>
>>>
>> --
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