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Hi Kirk and Ramki,<br>
<br>
On 12/6/12 12:05 AM, Srinivas Ramakrishna wrote:<br>
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<blockquote
cite="mid:CABzyjyn2tv6CrhLxxFatT5wd6eH0uj0kocLxkk0h9G0tJ+zcmw@mail.gmail.com"
type="cite">I am thinking that if we have a "test case" or
publicly available application that can serve as a "witness" to
this, it would<br>
allow us to learn a few useful things on how regular CMS might do
better for such apps, and understand the basis of<br>
this difference. (Unless you have already analysed it and can
share your summary of it.)<br>
</blockquote>
<br>
Yes, I totally agree with this. If there are cases where i-CMS is
better than regular CMS we need to understand why and should try to
get CMS to perform as well (or better). This is a much more
appealing solution to me than to keep the extra complexity that
i-CMS introduces.<br>
<br>
Kirk, if you have log files of runs with CMS and i-CMS it would be
great if you can pass them along. I would be very interested in
analyzing why i-CMS would preform better than CMS.<br>
<br>
Thanks,<br>
Bengt<br>
<br>
<blockquote
cite="mid:CABzyjyn2tv6CrhLxxFatT5wd6eH0uj0kocLxkk0h9G0tJ+zcmw@mail.gmail.com"
type="cite"><br>
thanks!<br>
-- ramki<br>
<br>
<div class="gmail_quote">On Wed, Dec 5, 2012 at 3:01 PM, Srinivas
Ramakrishna <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:ysr1729@gmail.com" target="_blank">ysr1729@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Kirk --<br>
<br>
<div class="gmail_quote">
<div class="im">On Wed, Dec 5, 2012 at 2:48 PM, Kirk
Pepperdine <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:kirk@kodewerk.com" target="_blank">kirk@kodewerk.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi all,<br>
<br>
<br>
The JEP's are coming in fast and furious. There is a
customer use case for iCMS.. it's used by low latency
applications... and quite successfully in fact. iCMS
manages large heaps much better than CMS does which
translates into more manageable pause times... I've got
logs from a number of customers that rely on iCMS.<br>
</blockquote>
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<div><br>
This is very interesting indeed (and something i had
vaguely heard a few years ago from the general grapevine,
although never actually understood<br>
why it must be so). Could you go a bit deeper on why this
is so? What exactly is it about doing a "slow, spread-out,
incremental CMS collection"<br>
that makes it work better than bang-bang vanilla CMS in
large multi-core, server environments? Perhaps the
insights from that might translate into<br>
something useful for vanilla CMS?<br>
<br>
Your experience does indicate that we must proceed with
some caution here before we deprecate iCMS, given it might
still have some useful life<br>
(notwithstanding my own instincts to the contrary -- in
server environments -- expressed in an earlier email
before I had seen yours).<br>
<br>
thanks.<br>
-- ramki<br>
<br>
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<div class="im">
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<br>
Regards,<br>
Kirk<br>
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<div><br>
<br>
On 2012-12-05, at 11:10 PM, <a
moz-do-not-send="true"
href="mailto:mark.reinhold@oracle.com"
target="_blank">mark.reinhold@oracle.com</a>
wrote:<br>
<br>
> Posted: <a moz-do-not-send="true"
href="http://openjdk.java.net/jeps/173"
target="_blank">http://openjdk.java.net/jeps/173</a><br>
><br>
> - Mark<br>
<br>
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