linux-kernel - Re: Can context switches be faster?

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: <452E876F.1000604@cfl.rr.com>
Date:	Thu, 12 Oct 2006 14:20:31 -0400
From:	Phillip Susi <psusi@....rr.com>
To:	John Richard Moser <nigelenki@...cast.net>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Can context switches be faster?

John Richard Moser wrote:
> Can context switches be made faster?  This is a simple question, mainly
> because I don't really understand what happens during a context switch
> that the kernel has control over (besides storing registers).
> 

Besides saving the registers, the expensive operation in a context 
switch involves flushing caches and switching page tables.  This can be 
avoided if the new and old processes both share the same address space.

-
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/