linux-kernel - Re: increased vmap_area_lock contentions on "n_tty: Move buffers into n_tty

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20130913031700.GB23757@kroah.com>
Date:	Thu, 12 Sep 2013 20:17:00 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Fengguang Wu <fengguang.wu@...el.com>
Cc:	Peter Hurley <peter@...leysoftware.com>,
	LKML <linux-kernel@...r.kernel.org>, lkp@...org,
	Tejun Heo <tj@...nel.org>
Subject: Re: increased vmap_area_lock contentions on "n_tty: Move buffers
 into n_tty_data"

On Fri, Sep 13, 2013 at 08:51:33AM +0800, Fengguang Wu wrote:
> Hi Peter,
> 
> FYI, we noticed much increased vmap_area_lock contentions since this
> commit:

What does that mean?  What is happening, are we allocating/removing more
memory now?

What type of load were you running that showed this problem?

thanks,

greg k-h
--
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/