Usage of JDBM : Experience feedbacks
"Florent Gratta" <florent.gratta-e9/[email protected]> Wed, 22 Oct 2008 12:04:18 +0200
| Newsgroups | gmane.comp.java.openjms.devel |
|---|---|
| Message-ID | <E05D289710E00A4EA7148501C2CA7A3B0449F29E@exchange2003.intranet.swapcom.fr> |
This is a multi-part message in MIME format. --===============3522740169775196766== Content-Class: urn:content-classes:message Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C9342D.8BF63480" This is a multi-part message in MIME format. ------_=_NextPart_001_01C9342D.8BF63480 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi All, I am currently Project Lead at Sicap, a Swiss company which designs softwares for mobile operators and the mobile network world in general. We are going to use a BTree library to index entries of csv files. We have identified JDBM library (http://jdbm.sourceforge.net/) and we have seen that you are currently using it in Open JMS. As there is no more tracker activity on this project and it seems that it is the same thing for support, we would like to know if JDBM is stable: =3D=3D> Have you encountered problems when you use this library in multithreaded mode: Several concurrent inserts at a time? =3D=3D> What is the behaviour of the library when we shut down with emergency? Is it robust? By this way, does BTree file could be corrupted? =3D=3D> Do you encountered performance lack in some cases? =3D=3D> Is there some limitations or lacks: Size of the index chain, cache size etc ... =3D=3D> Etc ... We are very interested on your feedbacks and experiences on JDBM library usage ? Thank's a lot, Kind Regards, Florent GRATTA Framework Project Leader, DeVelopment and Operation, Sicap France SAS Phone +334 37 37 69 96, Fax +334 37 37 69 99, Mobile +336 81 76 58 02 Postal Address: 50 rue de marseille, 69007 Lyon, France mailto: florent.gratta-e9/[email protected], http://www.sicap.com, Skype: florent_gratta This e-mail may contain confidential and/or privileged information. If you = are not the intended recipient (or have received this e-mail in error) plea= se notify the sender immediately and delete this e-mail. Any unauthorised c= opying, disclosure or distribution of the material in this e-mail is strict= ly forbidden. =0D =0D This e-mail may contain confidential and/or privileged information. If you = are not the intended recipient (or have received this e-mail in error) plea= se notify the sender immediately and delete this e-mail. Any unauthorised c= opying, disclosure or distribution of the material in this e-mail is strict= ly forbidden.=0D ------_=_NextPart_001_01C9342D.8BF63480 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; charset=3Dus-ascii"> <META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version 6.5.7652.24"> <TITLE>Usage of JDBM : Experience feedbacks</TITLE> </HEAD> <BODY> <!-- Converted from text/rtf format --> <P ALIGN=3DLEFT><SPAN LANG=3D"fr"><FONT SIZE=3D2 FACE=3D"Arial">Hi All,</FO= NT></SPAN></P> <P ALIGN=3DLEFT><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 FACE=3D"Arial">I am cur= rently Project Lead at Sicap, a Swiss company which designs softwares for m= obile operators and the mobile network world in general.</FONT></SPAN></P> <P ALIGN=3DLEFT><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 FACE=3D"Arial">We are g= oing to use a BTree library to index entries of csv files. We have identifi= ed JDBM library (</FONT></SPAN><SPAN LANG=3D"fr"></SPAN><A HREF=3D"http://j= dbm.sourceforge.net/)"><SPAN LANG=3D"fr"></SPAN><SPAN LANG=3D"fr"><U></U></= SPAN><U><SPAN LANG=3D"en-gb"><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial= ">http://jdbm.sourceforge.net/)</FONT></SPAN></U><SPAN LANG=3D"fr"></SPAN><= /A><SPAN LANG=3D"fr"></SPAN><SPAN LANG=3D"fr"></SPAN><SPAN LANG=3D"en-gb"><= FONT SIZE=3D2 FACE=3D"Arial"> and we have seen that you are currently using= it in</FONT></SPAN><SPAN LANG=3D"fr"></SPAN><SPAN LANG=3D"fr"></SPAN><SPAN= LANG=3D"en-gb"> <FONT COLOR=3D"#000000" SIZE=3D2 FACE=3D"Arial">Open JMS</= FONT></SPAN><SPAN LANG=3D"fr"></SPAN><SPAN LANG=3D"fr"></SPAN><SPAN LANG=3D= "en-gb"><FONT SIZE=3D2 FACE=3D"Arial">.</FONT></SPAN></P> <P ALIGN=3DLEFT><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 FACE=3D"Arial">As there= is no more tracker activity on this project and it seems that it is the sa= me thing for support, we would like to know if JDBM is stable:</FONT></SPAN= ></P> <P><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 FACE=3D"Wingdings">è<FONT FACE= =3D"Courier New"> </FONT></FONT></SPAN><= SPAN LANG=3D"en-gb"></SPAN><SPAN LANG=3D"fr"></SPAN><SPAN LANG=3D"fr"></SPA= N><SPAN LANG=3D"en-gb"> <FONT SIZE=3D2 FACE=3D"Arial">Have you encountered = problems when you use this library in multithreaded mode: Several concurren= t inserts at a time?</FONT></SPAN></P> <P><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 FACE=3D"Wingdings">è<FONT FACE= =3D"Courier New"> </FONT></FONT></SPAN><= SPAN LANG=3D"en-gb"> <FONT SIZE=3D2 FACE=3D"Arial">What is the behaviour of= the library when we shut down with emergency? Is it robust? By this way, d= oes BTree file could be corrupted?</FONT></SPAN></P> <P><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 FACE=3D"Wingdings">è<FONT FACE= =3D"Courier New"> </FONT></FONT></SPAN><= SPAN LANG=3D"en-gb"> <FONT SIZE=3D2 FACE=3D"Arial">Do you encountered perfo= rmance lack in some cases?</FONT></SPAN> <BR><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 FACE=3D"Wingdings">è<FONT FACE= =3D"Courier New"> </FONT></FONT></SPAN><= SPAN LANG=3D"en-gb"> <FONT SIZE=3D2 FACE=3D"Arial">Is there some limitation= s or lacks: Size of the index chain, cache size etc ...</FONT></SPAN> <BR><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 FACE=3D"Wingdings">è<FONT FACE= =3D"Courier New"> </FONT></FONT></SPAN><= SPAN LANG=3D"en-gb"> <FONT SIZE=3D2 FACE=3D"Arial">Etc ...</FONT></SPAN> </P> <P ALIGN=3DLEFT><SPAN LANG=3D"en-gb"><FONT SIZE=3D2 FACE=3D"Arial">We are v= ery interested on your feedbacks and experiences on JDBM library usage ?</F= ONT></SPAN></P> <P ALIGN=3DLEFT><SPAN LANG=3D"fr-fr"><FONT SIZE=3D2 FACE=3D"Arial">Thank= 217;s a lot,</FONT></SPAN></P> <P ALIGN=3DLEFT><SPAN LANG=3D"fr-fr"><FONT SIZE=3D2 FACE=3D"Arial">Kind Reg= ards,</FONT></SPAN></P> <P ALIGN=3DLEFT><SPAN LANG=3D"fr-fr"><FONT SIZE=3D2 FACE=3D"Arial">Florent = GRATTA</FONT></SPAN></P> <P ALIGN=3DLEFT><SPAN LANG=3D"fr-fr"><FONT SIZE=3D1 FACE=3D"Arial">Framewor= k Project Leader, DeVelopment and Operation, Sicap France SAS</FONT></SPAN>= </P> <P ALIGN=3DLEFT><SPAN LANG=3D"fr-fr"><FONT SIZE=3D1 FACE=3D"Arial">Phone +3= 34 37 37 69 96, Fax +334 37 37 69 99, Mobile +336 81 76 58 02</FONT></SPAN>= </P> <P ALIGN=3DLEFT><SPAN LANG=3D"fr-fr"><FONT SIZE=3D1 FACE=3D"Arial">Postal A= ddress: 50 rue de marseille, 69007 Lyon, France</FONT></SPAN></P> <P ALIGN=3DLEFT><SPAN LANG=3D"fr-fr"><FONT SIZE=3D1 FACE=3D"Arial">mailto:<= /FONT></SPAN><SPAN LANG=3D"fr"> </SPAN><A HREF=3D"mailto:florent.gratta@sic= ap-france.com"><SPAN LANG=3D"fr"></SPAN><SPAN LANG=3D"fr"><U></U></SPAN><U>= <SPAN LANG=3D"fr-fr"><FONT COLOR=3D"#0000FF" SIZE=3D1 FACE=3D"Arial">floren= t.gratta-e9/[email protected]</FONT></SPAN></U><SPAN LANG=3D"fr"></SPAN></A><SP= AN LANG=3D"fr"></SPAN><SPAN LANG=3D"fr"></SPAN><SPAN LANG=3D"fr-fr"><FONT S= IZE=3D1 FACE=3D"Arial">,</FONT></SPAN><SPAN LANG=3D"fr"> </SPAN><A HREF=3D"= http://www.sicap.com"><SPAN LANG=3D"fr"></SPAN><SPAN LANG=3D"fr"><U></U></S= PAN><U><SPAN LANG=3D"fr-fr"><FONT COLOR=3D"#0000FF" SIZE=3D1 FACE=3D"Arial"= >http://www.sicap.com</FONT></SPAN></U><SPAN LANG=3D"fr"></SPAN></A><SPAN L= ANG=3D"fr"></SPAN><SPAN LANG=3D"fr"></SPAN><SPAN LANG=3D"fr-fr"><FONT SIZE= =3D1 FACE=3D"Arial">, Skype: florent_gratta</FONT></SPAN></P> </BODY> <!--[object_id=3D#sicap-france.com#]--><FONT face=3DTahoma size=3D2><FONT c= olor=3D#0000ff> <DIV dir=3Dltr><SPAN><FONT face=3DArial color=3D#000000 size=3D1> <HR> </FONT></SPAN></DIV> <DIV dir=3Dltr><SPAN><FONT face=3DArial color=3D#000000 size=3D1>This e-mai= l may contain confidential and/or privileged information. If you are not th= e intended recipient (or have received this e-mail in error) please notify = the sender immediately and delete this e-mail. Any unauthorised copying, di= sclosure or distribution of the material in this e-mail is strictly forbidd= en.</FONT></SPAN></DIV></FONT></FONT></HTML> ------_=_NextPart_001_01C9342D.8BF63480-- --===============3522740169775196766== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ --===============3522740169775196766== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ openjms-developer mailing list openjms-developer-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org https://lists.sourceforge.net/lists/listinfo/openjms-developer --===============3522740169775196766==--