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From: | Peter Volkov |
Subject: | Re: grub2 is http protocol known to be slow? |
Date: | Thu, 14 Sep 2017 17:42:46 +0300 |
Hi! We've tried to use network boot loading kernel and initramfs with http but we found this to be terribly slow. Our ~400Mb initramfs was loaded more then hour on 10Gbit/s network!Googling around best I found was this redhat notice: https://access.redhat.com/solutions/1262653 (Installing RHEL 7 with GRUB2 HTTP is very slow or timeouts.) Although it is written there that: "It's a known issue that in heavy network traffic. The GRUB2 HTTP protocol is very slow and risks timeout failures.", I failed to find any bugreport on that. The best I found is the following bug report: http://savannah.gnu.org/bugs/?49531 but as far as I understand this should not cause such dramatic slowdown in single http connection.So is this really known? What causes this? Are there any workarounds?Relevant part of our configuration:insmod httpset root='(http)'menuentry 'Gentoo Linux' {linux /kernel
initrd /initramfs}--
Peter.
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