From: Andrew Morton <akpm@linux-foundation.org>
To: daniel.m.jordan@oracle.com
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
aaron.lu@intel.com, ak@linux.intel.com, Dave.Dice@oracle.com,
dave@stgolabs.net, khandual@linux.vnet.ibm.com,
ldufour@linux.vnet.ibm.com, mgorman@suse.de, mhocko@kernel.org,
pasha.tatashin@oracle.com, steven.sistare@oracle.com,
yossi.lev@oracle.com
Subject: Re: [RFC PATCH v1 00/13] lru_lock scalability
Date: Thu, 8 Feb 2018 15:36:52 -0800 [thread overview]
Message-ID: <20180208153652.481a77e57cc32c9e1a7e4269@linux-foundation.org> (raw)
In-Reply-To: <20180131230413.27653-1-daniel.m.jordan@oracle.com>
On Wed, 31 Jan 2018 18:04:00 -0500 daniel.m.jordan@oracle.com wrote:
> lru_lock, a per-node* spinlock that protects an LRU list, is one of the
> hottest locks in the kernel. On some workloads on large machines, it
> shows up at the top of lock_stat.
Do you have details on which callsites are causing the problem? That
would permit us to consider other approaches, perhaps.
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next prev parent reply other threads:[~2018-02-08 23:36 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-31 23:04 daniel.m.jordan
2018-01-31 23:04 ` [RFC PATCH v1 01/13] mm: add a percpu_pagelist_batch sysctl interface daniel.m.jordan
2018-01-31 23:04 ` [RFC PATCH v1 02/13] mm: allow compaction to be disabled daniel.m.jordan
2018-01-31 23:04 ` [RFC PATCH v1 03/13] mm: add lock array to pgdat and batch fields to struct page daniel.m.jordan
2018-02-01 22:50 ` Tim Chen
2018-02-02 4:29 ` Daniel Jordan
2018-01-31 23:04 ` [RFC PATCH v1 04/13] mm: introduce struct lru_list_head in lruvec to hold per-LRU batch info daniel.m.jordan
2018-01-31 23:04 ` [RFC PATCH v1 05/13] mm: add batching logic to add/delete/move API's daniel.m.jordan
2018-01-31 23:04 ` [RFC PATCH v1 06/13] mm: add lru_[un]lock_all APIs daniel.m.jordan
2018-01-31 23:04 ` [RFC PATCH v1 07/13] mm: convert to-be-refactored lru_lock callsites to lock-all API daniel.m.jordan
2018-01-31 23:04 ` [RFC PATCH v1 08/13] mm: temporarily convert " daniel.m.jordan
2018-01-31 23:04 ` [RFC PATCH v1 09/13] mm: introduce add-only version of pagevec_lru_move_fn daniel.m.jordan
2018-01-31 23:04 ` [RFC PATCH v1 10/13] mm: add LRU batch lock API's daniel.m.jordan
2018-01-31 23:04 ` [RFC PATCH v1 11/13] mm: use lru_batch locking in release_pages daniel.m.jordan
2018-01-31 23:04 ` [RFC PATCH v1 12/13] mm: split up release_pages into non-sentinel and sentinel passes daniel.m.jordan
2018-02-02 14:40 ` Laurent Dufour
2018-02-02 17:00 ` Laurent Dufour
2018-02-06 17:47 ` Daniel Jordan
2018-02-05 4:58 ` [lkp-robot] [mm] 44b163e12f: kernel_BUG_at_mm/swap.c kernel test robot
2018-01-31 23:04 ` [RFC PATCH v1 13/13] mm: splice local lists onto the front of the LRU daniel.m.jordan
2018-02-01 23:30 ` Tim Chen
2018-02-02 5:17 ` Daniel Jordan
2018-02-02 5:21 ` Aaron Lu
2018-02-06 17:38 ` Daniel Jordan
2018-02-02 15:22 ` Laurent Dufour
2018-02-06 18:18 ` Daniel Jordan
2018-02-01 15:54 ` [RFC PATCH v1 00/13] lru_lock scalability Steven Whitehouse
2018-02-02 4:18 ` Daniel Jordan
2018-02-02 10:50 ` Steven Whitehouse
2018-02-08 23:36 ` Andrew Morton [this message]
2018-02-13 21:07 ` Daniel Jordan
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