On Tue, Mar 27, 2018 at 11:09 PM, Fujinaka, Todd <todd.fujin...@intel.com> wrote: > Is this just a science experiment or is this for an actual product? > > If this is for an actual product, you should use your factory contact to get > a customized NVM for your part or write a custom driver. Putting ethtool in > your init scripts sounds fragile at best. > > Please file an IPS through your factory contact if this is a serious effort. >
Hello Todd, Can you please explain why another customized NVM shall make the difference in boot time till ping ? Isn't it depends on driver input/params ? Can't it be done in code ? Thank you very much, Ranran > Todd Fujinaka > Software Application Engineer > Datacenter Engineering Group > Intel Corporation > todd.fujin...@intel.com > > > -----Original Message----- > From: Ran Shalit [mailto:ransha...@gmail.com] > Sent: Tuesday, March 27, 2018 11:37 AM > To: Fujinaka, Todd <todd.fujin...@intel.com> > Cc: e1000-devel@lists.sourceforge.net > Subject: Re: [E1000-devel] 1000Gb without auto-negotiation > > On Tue, Mar 27, 2018 at 8:44 PM, Fujinaka, Todd <todd.fujin...@intel.com> > wrote: >> What did you try and what to you want to do? >> > > I try to use ethtool (in init.d scripts) to turn auto-negotiation off and > force 1G. I now understand from your answer that it can't work with igb. > > My end goal is to reduce boot time till ping success, but I still have long > interval from time of igb probe till ping success. > I tried many many methods but nothing helped too much, only if I remove > auto-negotiation to 100M, I got ~1.5 second less time till link is up, but we > probably can't use 100M, because we must work with 1Gb. > > I first got 3 seconds from igb init till link up (we can name it 1st > interval), and 3 seconds from link up till ping success(let's name it 2nd > interval). > > After initialization of ip in bootargs (ip=...) instead of using ifup in > init.d, and using static arp, I got ~100msec from link up till ping. > Yet, I'm not sure what actual made it less. when removed arp it was still > short. > > 1. Why initialization of ip at start reduced the 1st interval (from init till > link is up) ? > > I also don't understand yet why it takes to much time till igb get link is up > (1st interval). > It also seems that IGB disable/enable or power down itself (I see that led of > phy is turned off during boot) Trying to return from power down (without > doing anything) and from phy reset did not help, or made it non-functional at > all. > > 2. How to disable this power down\phy down issue during boot ? > > These are the function I catch when adding log of function call: > > > [ 1.897306] igb_init_module > [ 1.897309] igb: Intel(R) Gigabit Ethernet Network Driver << - > version 5.4.0-k > [ 1.897310] igb: Copyright (c) 2007-2014 Intel Corporation. << > [ 1.897338] igb_probe > [ 1.897728] igb_sw_init > [ 1.908895] igb_reset > [ 1.923042] igb_power_down_link > [ 1.926740] Starting network: > [ 1.944956] __igb_open > [ 1.945005] igb_power_up_link > [ 5.043281] igb 0000:03:00.0 eth0: igb: eth0 NIC Link is Up 1000 > Mbps Full Duplex, Flow Control: RX > [ 7.966910] ping ack success > > 3. Is there a way to investigate where igb waits for or spends time till link > is up ? > > >> You can't turn off auto-negotiation on 1G (as per the 1G spec), but you can >> limit what you advertise. >> >> Todd Fujinaka > > Thank you very much, > ranran > >> Software Application Engineer >> Datacenter Engineering Group >> Intel Corporation >> todd.fujin...@intel.com >> >> >> -----Original Message----- >> From: Ran Shalit [mailto:ransha...@gmail.com] >> Sent: Tuesday, March 27, 2018 12:09 AM >> To: e1000-devel@lists.sourceforge.net >> Subject: [E1000-devel] 1000Gb without auto-negotiation >> >> Hello, >> >> >> I try to set igb driver without autonegotiation in 1Gb, but it does not >> seems to work, (with ethtool or directly in driver). >> >> Isn't it supported ? >> >> Regards, >> ranran >> >> ---------------------------------------------------------------------- >> -------- Check out the vibrant tech community on one of the world's >> most engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _______________________________________________ >> E1000-devel mailing list >> E1000-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/e1000-devel >> To learn more about Intel® Ethernet, visit >> http://communities.intel.com/community/wired ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
