From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Neukum Subject: Re: implement put_char() in cdc-acm Date: Mon, 02 Nov 2015 12:32:52 +0100 Message-ID: <1446463972.25345.24.camel@suse.com> References: <1445958479.2043.6.camel@suse.com> <562F9C08.6050105@svenbrauch.de> <1446030280.15140.10.camel@suse.com> <5630BE5E.6040204@hurleysoftware.com> <1446035622.15140.17.camel@suse.com> <563667D9.9080401@svenbrauch.de> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <563667D9.9080401-ITmcY+a7/CDoK6nBLMlh1Q@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Sven Brauch Cc: Peter Hurley , linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-serial@vger.kernel.org On Sun, 2015-11-01 at 20:28 +0100, Sven Brauch wrote: > I cloned that tree (git describe said v4.3-rc5), and applied Oliver's > patch. With that kernel booted, the error occured much less > frequently, > but was still reproducable under load. With 4.2.5, I get a failure > after > a few hundred MB; with 4.3-rc5 plus patch, it transferred serveral > gigabytes > without errors, but failed when I started compiling something in the > background as a test. Hi, given this test I will submit the patch. Sven, can you ramp up the buffers in the manner Peter suggested and retest? It looks like the throttling code isn't perfect yet, but a larger buffer may make its performance good enough. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html