Re: Implementation PrevaylerEight
Marcel Oerlemans <[email protected]> Fri, 24 Oct 2014 14:03:30 +0200
| Newsgroups | gmane.comp.java.prevayler |
|---|---|
| Message-ID | <CAKE0621WmDL85CKgsG55voRjcnxrU1a8LtJCx+jh4cQEjQHwyA@mail.gmail.com> |
--===============1808750344698603576== Content-Type: multipart/alternative; boundary=001a113970a02c804b050629f827 --001a113970a02c804b050629f827 Content-Type: text/plain; charset=UTF-8 Hiya, I just ran the scalability test with P8 through JProfiler, and there seems to be a locking problem at the basis of the steep decline in performance. Hope that helps... Best, Marcel On Fri, Oct 24, 2014 at 11:53 AM, Marcel Oerlemans < [email protected]> wrote: > Hiya, > > >And the exceptions still arose? > Nope, in that case, no more exceptions, but then I had the incredible > steep decline in performance. > > Best, > Marcel > > > > > On Fri, Oct 24, 2014 at 11:48 AM, Christian Stein <[email protected]> > wrote: > >> >> >> On Fri, Oct 24, 2014 at 11:42 AM, Marcel Oerlemans < >> [email protected]> wrote: >> >>> Hiya, >>> >>> Yes, I did. I forgot to include those results, here they are: >>> >> >> And the exceptions still arose? >> >> >>> 32077,44 transactions/second @ 1 thread >>> 6836,89 transactions/second @ 2 threads >>> 547,94 transactions/second @ 3 threads >>> 30,33 transactions/second @ 4 threads >>> >>> On the other hand, when I run your BenchConcurrent test, I got a peak >>> of 1712415 transactions per second for P8. Which is incredible! >>> >>> >> This puzzles me, too. Both. The steep decline of performance in the >> Scalability test shipping with Prevayler and the heap of transactions that >> P8 handles in a simple "do a fast as you can" scenario. >> >> May be Klaus et al can elaborate this behaviour. >> >> Cheers, >> Christian >> >> Btw. here http://www.chartgo.com/share.do?id=67c65287aa I'm charting my >> current results. It's a nice online charting tool with a simple "GET" >> interface. >> >> >> ------------------------------------------------------------------------------ >> >> _______________________________________________ >> To unsubscribe go to the end of this page: >> http://lists.sourceforge.net/lists/listinfo/prevayler-discussion >> _______________________________________________ >> "Databases in Memoriam" -- http://www.prevayler.org >> >> > --001a113970a02c804b050629f827 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">Hiya,<div><br></div><div>I just ran the scalability test w= ith P8 through JProfiler, and there seems to be a locking problem at the ba= sis of the steep decline in performance. Hope that helps...</div><div><br><= /div><div>Best,</div><div>Marcel</div><div><br></div><div><br></div></div><= div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Fri, Oct 24, 20= 14 at 11:53 AM, Marcel Oerlemans <span dir=3D"ltr"><<a href=3D"mailto:ma= [email protected]" target=3D"_blank">[email protected]</a>>= ;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 = .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">Hiya,<sp= an class=3D""><div><br></div><div>><span style=3D"font-family:arial,sans= -serif;font-size:13px">And the exceptions still arose?</span></div></span><= div>Nope, in that case, no more exceptions, but then I had the incredible s= teep decline in performance.=C2=A0</div><div><br></div><div>Best,</div><div= >Marcel</div><div><br></div><div><br></div><div><br></div></div><div class= =3D"gmail_extra"><br><div class=3D"gmail_quote"><div><div class=3D"h5">On F= ri, Oct 24, 2014 at 11:48 AM, Christian Stein <span dir=3D"ltr"><<a href= =3D"mailto:[email protected]" target=3D"_blank">[email protected]</a>>= </span> wrote:<br></div></div><blockquote class=3D"gmail_quote" style=3D"ma= rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div clas= s=3D"h5"><div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"= gmail_quote"><span>On Fri, Oct 24, 2014 at 11:42 AM, Marcel Oerlemans <span= dir=3D"ltr"><<a href=3D"mailto:[email protected]" target=3D"_bl= ank">[email protected]</a>></span> wrote:<br><blockquote class= =3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;bo= rder-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">= <div dir=3D"ltr">Hiya,<div><br></div><div>Yes, I did. I forgot to include t= hose results, here they are:</div></div></blockquote><div><br></div></span>= <div>And the exceptions still arose?</div><span><div>=C2=A0</div><blockquot= e class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width= :1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-lef= t:1ex"><div dir=3D"ltr"><div>32077,44 transactions/second @ 1 thread<br></d= iv><div><div>6836,89 transactions/second @ 2 threads</div><div>547,94 trans= actions/second @ 3 threads</div><div>30,33 transactions/second @ 4 threads<= /div></div><div><br></div><div>On the other hand, when I run your BenchConc= urrent test, I got a peak of=C2=A01712415 transactions per second for P8. W= hich is incredible!</div><div><br></div></div></blockquote><div><br></div><= /span><div>This puzzles me, too. Both. The steep decline of performance in = the Scalability test shipping with Prevayler and the heap of transactions t= hat P8 handles in a simple "do a fast as you can" scenario.</div>= <div><br></div><div>May be Klaus et al can elaborate this behaviour.</div><= div><br></div><div>Cheers,</div><div>Christian</div><div><br></div><div>Btw= . here <a href=3D"http://www.chartgo.com/share.do?id=3D67c65287aa" target= =3D"_blank">http://www.chartgo.com/share.do?id=3D67c65287aa</a> I'm cha= rting my current results. It's a nice online charting tool with a simpl= e "GET" interface.</div></div></div></div> <br></div></div><span class=3D"">------------------------------------------= ------------------------------------<br> <br>_______________________________________________<br> To unsubscribe go to the end of this page: <a href=3D"http://lists.sourcefo= rge.net/lists/listinfo/prevayler-discussion" target=3D"_blank">http://lists= .sourceforge.net/lists/listinfo/prevayler-discussion</a><br> _______________________________________________<br> "Databases in Memoriam" -- <a href=3D"http://www.prevayler.org" t= arget=3D"_blank">http://www.prevayler.org</a><br> <br></span></blockquote></div><br></div> </blockquote></div><br></div> --001a113970a02c804b050629f827-- --===============1808750344698603576== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------------ --===============1808750344698603576== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ To unsubscribe go to the end of this page: http://lists.sourceforge.net/lists/listinfo/prevayler-discussion _______________________________________________ "Databases in Memoriam" -- http://www.prevayler.org --===============1808750344698603576==--