From: Petr Malat <oss@malat.biz>
To: Nick Terrell <terrelln@fb.com>
Cc: Nick Terrell <nickrterrell@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Chris Mason <clm@fb.com>,
"linux-kbuild@vger.kernel.org" <linux-kbuild@vger.kernel.org>,
"x86@kernel.org" <x86@kernel.org>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
Kees Cook <keescook@chromium.org>,
Kernel Team <Kernel-team@fb.com>,
Adam Borowski <kilobyte@angband.pl>,
Patrick Williams <patrickw3@fb.com>,
Michael van der Westhuizen <rmikey@fb.com>,
"mingo@kernel.org" <mingo@kernel.org>,
Patrick Williams <patrick@stwcx.xyz>
Subject: Re: [PATCH v3 3/8] lib: add zstd support to decompress
Date: Thu, 26 Mar 2020 22:44:19 +0100 [thread overview]
Message-ID: <20200326214419.GA13249@ntb.petris.klfree.czf> (raw)
In-Reply-To: <ED5FFEDC-A3B7-470E-95AE-B60EB1E6AE64@fb.com>
On Thu, Mar 26, 2020 at 09:13:54PM +0000, Nick Terrell wrote:
> >> What do you mean by that? Can you share with me the test you ran?
> >> Is this for kernel decompression or initramfs decompression?
> > Initramfs - you can apply my v2 patch on v5.5 and try with your test data.
> >
> > I have tested your patch also on ARMv7 platform and there the degradation
> > was 8%.
>
> Are you comparing the performance of an 8 MB window size vs a 128 MB
> window size?
No, I use the same initramfs file with 2 different kernels for the test. I have
removed
if (params.windowSize > ZSTD_WINDOWSIZE_MAX) goto out;
from your code.
Petr
next prev parent reply other threads:[~2020-03-26 21:44 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-25 19:58 [PATCH v3 0/8] Add support for ZSTD-compressed kernel and initramfs Nick Terrell
2020-03-25 19:58 ` [PATCH v3 1/8] lib: prepare zstd for preboot environment Nick Terrell
2020-03-26 15:40 ` Petr Malat
2020-03-26 18:50 ` Nick Terrell
2020-03-25 19:58 ` [PATCH v3 2/8] lib: prepare xxhash " Nick Terrell
2020-03-25 19:58 ` [PATCH v3 3/8] lib: add zstd support to decompress Nick Terrell
2020-03-26 16:47 ` Petr Malat
2020-03-26 19:03 ` Nick Terrell
2020-03-26 20:16 ` Petr Malat
2020-03-26 21:13 ` Nick Terrell
2020-03-26 21:44 ` Petr Malat [this message]
2020-03-26 21:58 ` Nick Terrell
2020-04-01 2:46 ` Nick Terrell
2020-03-25 19:58 ` [PATCH v3 4/8] init: add support for zstd compressed kernel Nick Terrell
2020-03-25 19:58 ` [PATCH v3 5/8] usr: add support for zstd compressed initramfs Nick Terrell
2020-03-25 19:58 ` [PATCH v3 6/8] x86: bump ZO_z_extra_bytes margin for zstd Nick Terrell
2020-03-25 19:58 ` [PATCH v3 7/8] x86: Add support for ZSTD compressed kernel Nick Terrell
2020-03-25 19:58 ` [PATCH v3 8/8] .gitignore: add ZSTD-compressed files Nick Terrell
2020-03-25 20:10 ` [PATCH v3 0/8] Add support for ZSTD-compressed kernel and initramfs Kees Cook
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