Date: Fri, 5 Feb 2021 18:35:10 -0500 From: Mark Saad <nonesuch@longcount.org> To: Sean Chittenden <seanc@freebsd.org> Cc: "Jin Guojun[VFF]" <jguojun@gmail.com>, freebsd-performance@freebsd.org Subject: Re: FreeBSD on Amazon AWS EC2 long standing performance problems Message-ID: <5D3DADA0-33E0-4EA1-A97E-C65C3FC859C3@longcount.org> In-Reply-To: <CAHevUJH2od6bB_1ML=qSSMWncWHOmoRG-MxfYxS9mkkmvnYC_w@mail.gmail.com> References: <CAHevUJH2od6bB_1ML=qSSMWncWHOmoRG-MxfYxS9mkkmvnYC_w@mail.gmail.com>
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> On Feb 5, 2021, at 6:14 PM, Sean Chittenden <seanc@freebsd.org> wrote: >=20 > =EF=BB=BFTo be clear, this is a known issue that needs attention: it is no= t a > benchmarking setup problem. Network throughput has a similar problem and > needs similar attention. Cloud is not a fringe server workload. -sc >=20 >=20 >> On Fri, Feb 5, 2021 at 3:00 PM Jin Guojun[VFF] <jguojun@gmail.com> wrote:= >>=20 >>> On 2021-02-05 12:45, Gunther Schadow wrote: >>> Gordon Bergling wrote: >>>> Can you verify your feelings by numbers? >>>=20 >>> Yes, like I said >>>=20 >>>>> Not by a few % points, but by factors if not an order of magnitude! >>>=20 >>> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253261 >>>=20 >>> Do this: >>>=20 >>> dd if=3D/dev/zero of=3D/dev/nvd2 bs=3D100M status=3Dprogress >>>=20 >>> and you see that it's writing with the "whopping" speed of 70 MB/s. >>>=20 >>> That used to be good, but it is no longer good. Compare Amazon Linux >>> doing >>> the same thing at 300 MB/s. >>>=20 >>> Now, when you put a file system over it, zfs or ufs, then instantly the >>> performance gets better: >>>=20 >>> newfs /dev/nvd2 >>> mount /dev/nvd2 /mnt >>> dd if=3D/dev/zero of=3D/mnt/test bs=3D100M status=3Dprogress >>>=20 >>> now that works at about 250 MB/s. Decent. So, problem solved? >>=20 >> It is not clear if this compares Apple to Apple. >>=20 >> What disk drives and CPUs are on FreeBSD, and what are disk drive(s) and >> CPU(s) on AWS? >>=20 >> Knowing the drive brand and models will tell approximately the disk >> throughput. Agree, 70MB/s is slow for modern disks, but your information >> does not provide clue why this could be slow. >>=20 >> Can this setup get 250MB/s on FreeBSD 11.4? or 300MB/s with Ubuntu 16.04 >> on the same hardware? >>=20 >> -Jin >>=20 >> _______________________________________________ >> freebsd-performance@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-performance >> To unsubscribe, send any mail to " >> freebsd-performance-unsubscribe@freebsd.org" >>=20 So silly question ; how does FreeBSD work on Google gcp, Microsoft Azure , D= igital Ocean? Do they all suffer the same issue or is this just an Amazon issue ? Also just a bit of advice; Contrary to popular belief Amazon does not actu= ally sell magic beans .=20 --- Mark Saad | nonesuch@longcount.org > _______________________________________________ > freebsd-performance@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.= org"
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