From: Andi Kleen <andi@firstfloor.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>,
Andy Lutomirski <luto@amacapital.net>,
Steven Rostedt <rostedt@goodmis.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>
Subject: Re: [RFC] x86_64: A real proposal for iret-less return to kernel
Date: Thu, 22 May 2014 01:23:18 +0200 [thread overview]
Message-ID: <20140521232318.GP1873@two.firstfloor.org> (raw)
In-Reply-To: <CA+55aFzx82y5xDa3-6aLm6fCvaf23FH1E14PvmXXUFngwpkdgw@mail.gmail.com>
> Hardware-interrupts during kernel are actually fairly common under
> network-intensive loads, even outside of idle (but idle is admittedly
> likely *the* most common one). Many network loads are fairly
> kernel-intensive.
For network workloads we can arbitarily coalesce interrupts or just use NAPI
to lower the costs. No need to optimize network interrupts too much.
-Andi
next prev parent reply other threads:[~2014-05-21 23:23 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-21 0:53 [RFC] x86_64: A real proposal for iret-less return to kernel Andy Lutomirski
2014-05-21 2:27 ` Steven Rostedt
2014-05-21 2:33 ` H. Peter Anvin
2014-05-21 2:39 ` Andy Lutomirski
2014-05-21 9:46 ` Borislav Petkov
2014-05-21 15:21 ` Andy Lutomirski
2014-05-21 16:30 ` Borislav Petkov
2014-05-21 17:52 ` Andy Lutomirski
2014-05-21 18:07 ` Borislav Petkov
2014-05-21 12:51 ` Jiri Kosina
2014-05-21 15:21 ` Andy Lutomirski
2014-05-21 16:33 ` Borislav Petkov
2014-05-21 21:25 ` Jiri Kosina
2014-05-21 21:35 ` Andy Lutomirski
2014-05-21 21:48 ` Borislav Petkov
2014-05-21 21:52 ` Andy Lutomirski
2014-05-21 21:55 ` Borislav Petkov
2014-05-21 21:59 ` Jiri Kosina
2014-05-21 21:59 ` Andy Lutomirski
2014-05-21 22:01 ` Luck, Tony
2014-05-21 22:13 ` Andy Lutomirski
2014-05-21 22:17 ` Borislav Petkov
2014-05-21 22:20 ` Andy Lutomirski
2014-05-21 22:36 ` Borislav Petkov
2014-05-21 22:18 ` Luck, Tony
2014-05-21 22:24 ` Andy Lutomirski
2014-05-21 22:32 ` Luck, Tony
2014-05-21 22:39 ` Andy Lutomirski
2014-05-21 22:48 ` Borislav Petkov
2014-05-21 22:52 ` Andy Lutomirski
2014-05-21 23:02 ` Borislav Petkov
2014-05-21 23:05 ` Luck, Tony
2014-05-21 23:07 ` Andy Lutomirski
2014-05-21 23:19 ` Luck, Tony
2014-05-21 23:30 ` Linus Torvalds
2014-05-21 23:40 ` Luck, Tony
2014-05-21 23:51 ` Borislav Petkov
2014-05-22 0:03 ` Linus Torvalds
2014-05-22 8:50 ` Borislav Petkov
2014-05-22 0:05 ` Andy Lutomirski
2014-05-21 21:37 ` Linus Torvalds
2014-05-21 21:43 ` Borislav Petkov
2014-05-21 21:45 ` H. Peter Anvin
2014-05-21 21:47 ` Andy Lutomirski
2014-05-21 21:54 ` Borislav Petkov
2014-05-21 22:00 ` H. Peter Anvin
2014-05-21 22:11 ` Borislav Petkov
2014-05-21 22:13 ` H. Peter Anvin
2014-05-21 22:21 ` Borislav Petkov
2014-05-26 10:18 ` [PATCH] x86, MCE: Flesh out when to panic comment Borislav Petkov
2014-05-26 10:51 ` Jiri Kosina
2014-05-26 11:06 ` Borislav Petkov
2014-05-26 16:47 ` Andy Lutomirski
2014-05-26 17:51 ` Borislav Petkov
2014-05-26 17:59 ` Andy Lutomirski
2014-05-27 21:53 ` Luck, Tony
2014-05-27 22:24 ` Borislav Petkov
2014-05-27 22:33 ` Luck, Tony
2014-05-21 21:50 ` [RFC] x86_64: A real proposal for iret-less return to kernel Jiri Kosina
2014-05-21 18:11 ` Andy Lutomirski
2014-05-21 22:36 ` H. Peter Anvin
2014-05-21 22:41 ` Andy Lutomirski
2014-05-21 23:03 ` H. Peter Anvin
2014-05-21 22:25 ` Andi Kleen
2014-05-21 22:32 ` Andy Lutomirski
2014-05-21 22:33 ` Linus Torvalds
2014-05-21 23:23 ` Andi Kleen [this message]
2014-05-21 23:34 ` Linus Torvalds
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