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Date:      Thu, 15 Jan 2015 20:51:51 +0000
From:      Marcin Cieslak <saper@saper.info>
To:        Slawa Olhovchenkov <slw@zxy.spb.ru>
Cc:        emulation@freebsd.org, FreeBSD-Current <freebsd-current@freebsd.org>
Subject:   Re: DigitalOcean offers VMs with FreeBSD!
Message-ID:  <alpine.BSF.2.11.1501152050520.91610@z.fncre.vasb>
In-Reply-To: <20150115154443.GA10325@zxy.spb.ru>
References:  <54B7A494.50205@FreeBSD.org> <54B7DC97.7050809@FreeBSD.org> <20150115154443.GA10325@zxy.spb.ru>

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On Thu, 15 Jan 2015, Slawa Olhovchenkov wrote:

> On Thu, Jan 15, 2015 at 06:28:23PM +0300, Lev Serebryakov wrote:
> 
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA512
> > 
> > On 15.01.2015 14:29, Lev Serebryakov wrote:
> > 
> > > https://www.digitalocean.com/company/blog/presenting-freebsd-how-we-made-it-happen/
> > >
> > >  I didn't see this news on mailing lists :)
> >  But here are some thread about FreeBSD is way slower than Linux in
> > these virtual installations
> > 
> > https://news.ycombinator.com/item?id=8888487
> 
> May be IOPS quotation?
> Can you test with dd and custom kernel with MAXPHYS=1048576 ?

By default, root is mounted with "sync" option:

> time dd if=/dev/zero of=/tmp/test bs=64k count=16k
16384+0 records in
16384+0 records out
1073741824 bytes transferred in 57.605991 secs (18639412 bytes/sec)
0.023u 6.128s 0:57.61 10.6%	25+172k 7+81916io 3pf+0w
> sudo mount -o nosync -u /
> 
> mount
/dev/gpt/rootfs on / (ufs, local, soft-updates)
devfs on /dev (devfs, local, multilabel)
> time dd if=/dev/zero of=/tmp/test bs=64k count=16k
16384+0 records in
16384+0 records out
1073741824 bytes transferred in 5.135908 secs (209065631 bytes/sec)
0.016u 2.274s 0:05.16 44.1%	24+169k 8+8193io 0pf+0w

//Marcin



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