From: Gang Li <gang.li@linux.dev>
To: Tim Chen <tim.c.chen@linux.intel.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
David Hildenbrand <david@redhat.com>,
David Rientjes <rientjes@google.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
Muchun Song <muchun.song@linux.dev>,
Andrew Morton <akpm@linux-foundation.org>,
ligang.bdlg@bytedance.com
Subject: Re: [PATCH v4 3/7] padata: dispatch works on different nodes
Date: Fri, 19 Jan 2024 23:05:11 +0800 [thread overview]
Message-ID: <fa628406-23db-47be-b9c1-ef8a88ecd062@linux.dev> (raw)
In-Reply-To: <29695e89ae2d838c9b7537941b0231c3ff559e48.camel@linux.intel.com>
On 2024/1/19 07:04, Tim Chen wrote:
> On Thu, 2024-01-18 at 20:39 +0800, Gang Li wrote:
>> When a group of tasks that access different nodes are scheduled on the
>> same node, they may encounter bandwidth bottlenecks and access latency.
>>
>> Thus, numa_aware flag is introduced here, allowing tasks to be
>> distributed across different nodes to fully utilize the advantage of
>> multi-node systems.
>>
>> Signed-off-by: Gang Li <gang.li@linux.dev>
>> Tested-by: David Rientjes <rientjes@google.com>
>> ---
>> include/linux/padata.h | 3 +++
>> kernel/padata.c | 14 ++++++++++++--
>> mm/mm_init.c | 1 +
>> 3 files changed, 16 insertions(+), 2 deletions(-)
>>
>> diff --git a/include/linux/padata.h b/include/linux/padata.h
>> index 495b16b6b4d7..f79ccd50e7f4 100644
>> --- a/include/linux/padata.h
>> +++ b/include/linux/padata.h
>> @@ -137,6 +137,8 @@ struct padata_shell {
>> * appropriate for one worker thread to do at once.
>> * @max_threads: Max threads to use for the job, actual number may be less
>> * depending on task size and minimum chunk size.
>> + * @numa_aware: Dispatch jobs to different nodes. If a node only has memory but
>> + * no CPU, dispatch its jobs to a random CPU.
>
> Suggest:
> Distribute jobs to different nodes with CPU in a round robin fashion.
>
Good idea.
Thanks.
>> */
>> struct padata_mt_job {
>
next prev parent reply other threads:[~2024-01-19 14:55 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-18 12:39 [RESEND PATCH v4 0/7] hugetlb: parallelize hugetlb page init on boot Gang Li
2024-01-18 12:39 ` [PATCH v4 1/7] hugetlb: code clean for hugetlb_hstate_alloc_pages Gang Li
2024-01-18 12:39 ` [PATCH v4 2/7] hugetlb: split hugetlb_hstate_alloc_pages Gang Li
2024-01-22 3:43 ` Muchun Song
2024-01-18 12:39 ` [PATCH v4 3/7] padata: dispatch works on different nodes Gang Li
2024-01-18 23:04 ` Tim Chen
2024-01-19 15:05 ` Gang Li [this message]
2024-01-19 2:59 ` Muchun Song
2024-01-19 15:04 ` Gang Li
2024-01-18 12:39 ` [PATCH v4 4/7] hugetlb: pass *next_nid_to_alloc directly to for_each_node_mask_to_alloc Gang Li
2024-01-18 23:01 ` Tim Chen
2024-01-19 2:54 ` Muchun Song
2024-01-22 6:16 ` Muchun Song
2024-01-22 9:14 ` Gang Li
2024-01-22 9:50 ` Muchun Song
2024-01-18 12:39 ` [PATCH v4 5/7] hugetlb: have CONFIG_HUGETLBFS select CONFIG_PADATA Gang Li
2024-01-18 12:39 ` [PATCH v4 6/7] hugetlb: parallelize 2M hugetlb allocation and initialization Gang Li
2024-01-22 7:10 ` Muchun Song
2024-01-22 10:12 ` Gang Li
2024-01-22 11:30 ` Muchun Song
2024-01-23 2:12 ` Gang Li
2024-01-23 3:32 ` Muchun Song
2024-01-18 12:39 ` [PATCH v4 7/7] hugetlb: parallelize 1G hugetlb initialization Gang Li
2024-01-18 14:22 ` Kefeng Wang
2024-01-19 14:45 ` Gang Li
2024-01-24 9:23 ` Muchun Song
2024-01-24 10:52 ` Gang Li
2024-01-25 2:48 ` Muchun Song
2024-01-25 3:47 ` Gang Li
2024-01-25 3:56 ` Gang Li
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