linux-kernel - Re: regression/bisected/6.9 commit 587d67fd929ad89801bcc429675bda90d53f6592 decrease 30% of gaming performance

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Message-ID: <CABXGCsMcazRvmiN4XtiHQCE9=dB=M=VsRqB=v+RPmtuhBL29DA@mail.gmail.com>
Date: Mon, 1 Apr 2024 21:50:27 +0500
From: Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>
To: Takashi Iwai <tiwai@...e.de>
Cc: Linux List Kernel Mailing <linux-kernel@...r.kernel.org>, linux-sound@...r.kernel.org
Subject: Re: regression/bisected/6.9 commit 587d67fd929ad89801bcc429675bda90d53f6592
 decrease 30% of gaming performance

On Mon, Apr 1, 2024 at 7:48 PM Takashi Iwai <tiwai@...e.de> wrote:
>
>
> Then it shouldn't be dmix/dsnoop.  You'd better try profiling what's
> going on there.  e.g. try to get perf results with and without the
> commit.

perf diff perf-with-revert-587d67fd929a.data
perf-with-revert-587d67fd929a-beb45974dd49.data
No kallsyms or vmlinux with build-id
81ed128ee346c4f6a2595295d5b0f85ba85f770c was found
No kallsyms or vmlinux with build-id
5b7d215e519bfbc813e04bbb3850a08b8a8274c5 was found
# Event 'cycles:P'
#
# Baseline  Delta Abs  Shared Object
Symbol

                        >
# ........  .........  ..............................................
...................................................................................................................................................................>
#
    44.80%    +14.98%  [kernel.kallsyms]
[k] 0xffffffff9f006bc0
    43.34%    -11.87%  ShadowOfTheTombRaider
[.] 0x00000000001d9da1
     1.67%     -0.70%  libc.so.6
[.] syscall
     0.75%     -0.21%  libvulkan_radeon.so
[.] radv_UpdateDescriptorSetWithTemplate
     0.42%     -0.12%  libvulkan_radeon.so
[.] radv_CmdBindPipeline
     0.35%     -0.12%  libm.so.6
[.] __powf_fma
     0.44%     -0.11%  libvulkan_radeon.so
[.] radv_bind_descriptor_sets
     0.51%     -0.11%  libc.so.6
[.] __memmove_avx512_unaligned_erms
     0.36%     -0.11%  libc.so.6
[.] __memset_avx512_unaligned_erms
     0.35%     -0.10%  libvulkan_radeon.so
[.] radv_amdgpu_add_cs_to_bo_list
     0.28%     -0.07%  libvulkan_radeon.so
[.] radv_emit_all_graphics_states
     0.21%     -0.07%  libc.so.6
[.] sem_post@...BC_2.2.5
     0.31%     -0.07%  libvulkan_radeon.so
[.] radv_AllocateDescriptorSets
     0.20%     -0.06%  libvulkan_radeon.so
[.] radv_CmdDrawIndexed
     0.21%     -0.06%  [vdso]
[.] 0x00000000000005a0
     0.23%     -0.06%  [amdgpu]
[k] amdgpu_bo_placement_from_domain
     0.19%     -0.05%  libvulkan_radeon.so
[.] radv_flush_constants
     0.23%     -0.05%  [amdgpu]
[k] amdgpu_vram_mgr_compatible
     0.18%     -0.05%  [amdgpu]
[k] amdgpu_vm_bo_update
     0.12%     -0.05%  libc.so.6
[.] __futex_abstimed_wait_common
     0.14%     -0.04%  libvulkan_radeon.so
[.] radv_emit_graphics_pipeline
     0.16%     -0.04%  libvulkan_radeon.so
[.] radv_amdgpu_cs_find_buffer
     0.14%     -0.04%  libm.so.6
[.] powf@...BC_2.2.5
     0.18%     -0.04%  libvulkan_radeon.so
[.] radv_amdgpu_cs_add_buffer
     0.14%     -0.04%  [amdgpu]
[k] amdgpu_bo_list_entry_cmp
     0.15%     -0.04%  libvulkan_radeon.so
[.] radv_emit_all_inline_push_consts
     0.08%     -0.03%  libc.so.6
[.] __new_sem_wait_slow64.constprop.0
     0.10%     -0.03%  libvulkan_radeon.so
[.] radv_ResetDescriptorPool
     0.11%     -0.03%  libvulkan_radeon.so
[.] radv_upload_graphics_shader_descriptors
               +0.02%  [JIT] tid 6669
[.] 0x000034d982fb9005
     0.04%     -0.02%  [amdgpu]
[k] amdgpu_cs_ioctl
     0.10%     -0.02%  libvulkan_radeon.so
[.] radv_bind_shader
     0.00%     +0.02%  [crc32c_intel]
[k] crc_pcl
     0.09%     -0.02%  libvulkan_radeon.so
[.] radv_emit_descriptor_pointers.isra.0
     0.05%     -0.02%  libc.so.6
[.] sem_wait@@GLIBC_2.34
     0.06%     -0.02%  libvulkan_radeon.so
[.] vk_common_CmdBindDescriptorSets
     0.08%     +0.02%  libcef.so
[.] 0x0000000002470460
     0.05%     -0.02%  libm.so.6
[.] __logf_fma

Here is original perf files:
[1] perf-with-revert-587d67fd929a.data -
https://mega.nz/file/EpZmXbgL#vEnxuODoB__jM6TwV6XbwC_TWMMqvT7qaWkJU22JY48
[2] perf-with-revert-587d67fd929a-beb45974dd49.data -
https://mega.nz/file/0lI31CDA#hKsv6vX7t5u-Sx1_p2E7-Y32-z5VFPlW2Y793oM-JRU

-- 
Best Regards,
Mike Gavrilov.