From: Mike Rapoprt <rppt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org> To: Randy Dunlap <rdunlap-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>, Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>, Mel Gorman <mel-wJa12IhQEiizQB+pC5nmwQ@public.gmane.org> Cc: Matthew Wilcox <willy-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, Thomas Schoebel-Theuer <tst-0Nly+W1lFbFDiq0p6IFu4YQuADTiUCJX@public.gmane.org>, andi-Vw/NltI1exuRpAAqCnN02g@public.gmane.org, Rik van Riel <riel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Michal Hocko <mhocko-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Guy Shattah <sguy-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>, Anshuman Khandual <khandual-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>, Michal Nazarewicz <mina86-deATy8a+UHjQT0dZR+AlfA@public.gmane.org>, Vlastimil Babka <vbabka-AlSwsSmVLrQ@public.gmane.org>, David Nellans <dnellans-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>, Laura Abbott <labbott-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Pavel Machek <pavel-+ZI9xUNit7I@public.gmane.org>, Dave Hansen <dave.hansen-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Mike Kravetz <mike.kravetz-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org> Subject: Re: [RFC 1/2] Protect larger order pages from breaking up Date: Sat, 17 Feb 2018 17:07:16 +0100 [thread overview] Message-ID: <CF0D4656-676E-42EA-BB20-C3A557A397C6@linux.vnet.ibm.com> (raw) In-Reply-To: <b76028c6-c755-8178-2dfc-81c7db1f8bed-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org> On February 16, 2018 7:02:53 PM GMT+01:00, Randy Dunlap <rdunlap-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org> wrote: >On 02/16/2018 08:01 AM, Christoph Lameter wrote: >> Control over this feature is by writing to /proc/zoneinfo. >> >> F.e. to ensure that 2000 16K pages stay available for jumbo >> frames do >> >> echo "2=2000" >/proc/zoneinfo >> >> or through the order=<page spec> on the kernel command line. >> F.e. >> >> order=2=2000,4N2=500 > > >Please document the the kernel command line option in >Documentation/admin-guide/kernel-parameters.txt. > >I suppose that /proc/zoneinfo should be added somewhere in >Documentation/vm/ >but I'm not sure where that would be. It's in Documentation/sysctl/vm.txt and in 'man proc' [1] [1] https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/man5/proc.5 >thanks, -- Sincerely yours, Mike. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html
WARNING: multiple messages have this Message-ID (diff)
From: Mike Rapoprt <rppt@linux.vnet.ibm.com> To: Randy Dunlap <rdunlap@infradead.org>, Christoph Lameter <cl@linux.com>, Mel Gorman <mel@skynet.ie> Cc: Matthew Wilcox <willy@infradead.org>, linux-mm@kvack.org, linux-rdma@vger.kernel.org, akpm@linux-foundation.org, Thomas Schoebel-Theuer <tst@schoebel-theuer.de>, andi@firstfloor.org, Rik van Riel <riel@redhat.com>, Michal Hocko <mhocko@kernel.org>, Guy Shattah <sguy@mellanox.com>, Anshuman Khandual <khandual@linux.vnet.ibm.com>, Michal Nazarewicz <mina86@mina86.com>, Vlastimil Babka <vbabka@suse.cz>, David Nellans <dnellans@nvidia.com>, Laura Abbott <labbott@redhat.com>, Pavel Machek <pavel@ucw.cz>, Dave Hansen <dave.hansen@intel.com>, Mike Kravetz <mike.kravetz@oracle.com> Subject: Re: [RFC 1/2] Protect larger order pages from breaking up Date: Sat, 17 Feb 2018 17:07:16 +0100 [thread overview] Message-ID: <CF0D4656-676E-42EA-BB20-C3A557A397C6@linux.vnet.ibm.com> (raw) In-Reply-To: <b76028c6-c755-8178-2dfc-81c7db1f8bed@infradead.org> On February 16, 2018 7:02:53 PM GMT+01:00, Randy Dunlap <rdunlap@infradead.org> wrote: >On 02/16/2018 08:01 AM, Christoph Lameter wrote: >> Control over this feature is by writing to /proc/zoneinfo. >> >> F.e. to ensure that 2000 16K pages stay available for jumbo >> frames do >> >> echo "2=2000" >/proc/zoneinfo >> >> or through the order=<page spec> on the kernel command line. >> F.e. >> >> order=2=2000,4N2=500 > > >Please document the the kernel command line option in >Documentation/admin-guide/kernel-parameters.txt. > >I suppose that /proc/zoneinfo should be added somewhere in >Documentation/vm/ >but I'm not sure where that would be. It's in Documentation/sysctl/vm.txt and in 'man proc' [1] [1] https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/man5/proc.5 >thanks, -- Sincerely yours, Mike. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2018-02-17 16:07 UTC|newest] Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-02-16 16:01 [RFC 0/2] Larger Order Protection V1 Christoph Lameter 2018-02-16 16:01 ` [RFC 1/2] Protect larger order pages from breaking up Christoph Lameter 2018-02-16 16:01 ` Christoph Lameter [not found] ` <20180216160121.519788537-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org> 2018-02-16 17:03 ` Andi Kleen 2018-02-16 17:03 ` Andi Kleen [not found] ` <20180216170354.vpbuugzqsrrfc4js-1g7Xle2YJi4/4alezvVtWx2eb7JE58TQ@public.gmane.org> 2018-02-16 18:25 ` Christopher Lameter 2018-02-16 18:25 ` Christopher Lameter 2018-02-16 19:01 ` Dave Hansen 2018-02-16 19:01 ` Dave Hansen 2018-02-16 20:15 ` Christopher Lameter 2018-02-16 21:08 ` Dave Hansen 2018-02-16 21:08 ` Dave Hansen 2018-02-16 21:43 ` Matthew Wilcox [not found] ` <20180216214353.GA32655-PfSpb0PWhxZc2C7mugBRk2EX/6BAtgUQ@public.gmane.org> 2018-02-16 21:47 ` Dave Hansen 2018-02-16 21:47 ` Dave Hansen 2018-02-16 18:02 ` Randy Dunlap [not found] ` <b76028c6-c755-8178-2dfc-81c7db1f8bed-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org> 2018-02-17 16:07 ` Mike Rapoprt [this message] 2018-02-17 16:07 ` Mike Rapoprt 2018-02-16 18:59 ` Mike Kravetz [not found] ` <5108eb20-2b20-bd48-903e-bce312e96974-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org> 2018-02-16 20:13 ` Christopher Lameter 2018-02-16 20:13 ` Christopher Lameter 2018-02-18 9:00 ` Guy Shattah 2018-02-18 9:00 ` Guy Shattah 2018-02-19 10:19 ` Mel Gorman 2018-02-19 14:42 ` Michal Hocko 2018-02-19 15:09 ` Christopher Lameter 2018-02-22 21:19 ` Thomas Schoebel-Theuer 2018-02-22 21:53 ` Zi Yan 2018-02-23 2:01 ` Christopher Lameter 2018-02-23 2:16 ` Zi Yan 2018-02-23 2:45 ` Christopher Lameter 2018-02-23 9:59 ` Mel Gorman 2018-02-16 16:01 ` [RFC 2/2] Page order diagnostics Christoph Lameter 2018-02-16 16:01 ` Christoph Lameter [not found] ` <20180216160121.583566579-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org> 2018-02-17 21:17 ` Pavel Machek 2018-02-17 21:17 ` Pavel Machek 2018-02-19 14:54 ` Christopher Lameter 2018-02-16 18:27 ` [RFC 0/2] Larger Order Protection V1 Christopher Lameter
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