From: Jeremy Evans <jeremyevans0@gmail.com>
To: unicorn list <mongrel-unicorn@rubyforge.org>
Subject: Re: [ANN] unicorn 3.0.0 - disable rewindable input!
Date: Sun, 21 Nov 2010 17:21:29 -0800 [thread overview]
Message-ID: <AANLkTikj+5HNbhBiiR2wUth=L6MCiky0xy6jY3wxANcN@mail.gmail.com> (raw)
In-Reply-To: <20101121234953.GA14970@dcvr.yhbt.net>
On Sun, Nov 21, 2010 at 3:49 PM, Eric Wong <normalperson@yhbt.net> wrote:
> Jeremy Evans <jeremyevans0@gmail.com> wrote:
>> On Sat, Nov 20, 2010 at 8:05 PM, Eric Wong <normalperson@yhbt.net> wrote:
>> > Michael Guterl <mguterl@gmail.com> wrote:
>> >> We've been using Unicorn 1.x very successfully for some time with a
>> >> Rails 2.3 application. Would you recommend upgrading to Unicorn 3.x?
>> >
>> > Yes if you're running a recent Linux (>= 2.6.28), it might help somewhat
>> > with performance (but may not be noticeable with a particular app).
>> > I haven't done extensive benchmarking, but the reduction of syscalls
>> > should help a bit, and newer versions will exploit some of that more.
> <snip>
>> > If you're willing to help iron out portability bugs to other kernels,
>> > then please upgrade and report back :)
>>
>> Just an anecdotal data point here, using OpenBSD-current. Moving from
>> Unicorn 1.0 to 2.0 sped up the scaffolding_extensions integration test
>> suite by a factor of 3 (~10 seconds to ~3 seconds). I'm guessing this
>> is due mainly to the use of kgio. Hoping to upgrade to Unicorn 3.0
>> today.
>
> Wow! I didn't expect that kind of performance improvement![1] What
> is this test doing? I'm actually suspicious there could be a bug
> somewhere in Unicorn or kgio causing wrong results :)
>
> Let us know how 3.0 goes, thanks!
>
> [1] - dalli reported 10-20%, which is closer to what I expected
> (1-10%).
Looks like it must have been some other change that caused this speed
up, as after testing again with 1.x, I'm getting about the same in
terms of performance. Sorry for the misinformation.
Jeremy
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next prev parent reply other threads:[~2010-11-22 3:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-20 2:47 [ANN] unicorn 3.0.0 - disable rewindable input! Eric Wong
2010-11-20 17:50 ` Michael Guterl
2010-11-21 4:05 ` Eric Wong
2010-11-21 16:29 ` Jeremy Evans
2010-11-21 23:49 ` Eric Wong
2010-11-22 1:21 ` Jeremy Evans [this message]
2010-11-23 17:34 ` Michael Guterl
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