linux-kernel - Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20071101.195101.42788898.davem@davemloft.net>
Date:	Thu, 01 Nov 2007 19:51:01 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	clameter@....com
Cc:	akpm@...ux-foundation.org, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org, mathieu.desnoyers@...ymtl.ca,
	penberg@...helsinki.fi
Subject: Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu
 access overhead

From: Christoph Lameter <clameter@....com>
Date: Thu, 1 Nov 2007 18:06:17 -0700 (PDT)

> A reasonable implementation for 64 bit is likely going to depend on 
> reserving some virtual memory space for the per cpu mappings so that they 
> can be dynamically grown up to what the reserved virtual space allows.
> 
> F.e. If we reserve 256G of virtual space and support a maximum of 16k cpus 
> then there is a limit on the per cpu space available of 16MB.

Now that I understand your implementation better, yes this
sounds just fine.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/