[jira] [Updated] (PROTON-659) if protons internal buffer gets large, performance can suffer
[ https://issues.apache.org/jira/browse/PROTON-659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Justin Ross updated PROTON-659: --- Fix Version/s: (was: proton-c-0.19.0) proton-c-0.20.0 > if protons internal buffer gets large, performance can suffer > - > > Key: PROTON-659 > URL: https://issues.apache.org/jira/browse/PROTON-659 > Project: Qpid Proton > Issue Type: Improvement > Components: proton-c >Affects Versions: 0.7 >Reporter: Gordon Sim >Assignee: Andrew Stitcher >Priority: Minor > Labels: perf > Fix For: proton-c-0.20.0 > > > In doing some performance investigations using qpid::messaging over 1.0, in > particular as message size got larger, I saw much lower throughput and lots > of cpu used. From callgrind it looked like this was from shuffliing up the > buffer in pn_dispatcher_output. Because of the threading in qpid::messaging, > it was possible for the application to generate too much output using the > top-half of the engine API before the IO was done for the bottom half. Fixing > that in qpid:messaging improved performance. > There may perhaps be something that proton could do to make users more aware > of this (e.g. a log message if the buffer exceeds a certain size? or just > documentation?) -- This message was sent by Atlassian JIRA (v6.4.14#64029) - To unsubscribe, e-mail: dev-unsubscr...@qpid.apache.org For additional commands, e-mail: dev-h...@qpid.apache.org
[jira] [Updated] (PROTON-659) if protons internal buffer gets large, performance can suffer
[ https://issues.apache.org/jira/browse/PROTON-659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Justin Ross updated PROTON-659: --- Fix Version/s: (was: 0.18.0) 0.19.0 > if protons internal buffer gets large, performance can suffer > - > > Key: PROTON-659 > URL: https://issues.apache.org/jira/browse/PROTON-659 > Project: Qpid Proton > Issue Type: Improvement > Components: proton-c >Affects Versions: 0.7 >Reporter: Gordon Sim >Priority: Minor > Labels: perf > Fix For: 0.19.0 > > > In doing some performance investigations using qpid::messaging over 1.0, in > particular as message size got larger, I saw much lower throughput and lots > of cpu used. From callgrind it looked like this was from shuffliing up the > buffer in pn_dispatcher_output. Because of the threading in qpid::messaging, > it was possible for the application to generate too much output using the > top-half of the engine API before the IO was done for the bottom half. Fixing > that in qpid:messaging improved performance. > There may perhaps be something that proton could do to make users more aware > of this (e.g. a log message if the buffer exceeds a certain size? or just > documentation?) -- This message was sent by Atlassian JIRA (v6.4.14#64029) - To unsubscribe, e-mail: dev-unsubscr...@qpid.apache.org For additional commands, e-mail: dev-h...@qpid.apache.org
[jira] [Updated] (PROTON-659) if protons internal buffer gets large, performance can suffer
[ https://issues.apache.org/jira/browse/PROTON-659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Justin Ross updated PROTON-659: --- Fix Version/s: 0.17.0 > if protons internal buffer gets large, performance can suffer > - > > Key: PROTON-659 > URL: https://issues.apache.org/jira/browse/PROTON-659 > Project: Qpid Proton > Issue Type: Improvement > Components: proton-c >Affects Versions: 0.7 >Reporter: Gordon Sim >Priority: Minor > Labels: perf > Fix For: 0.17.0 > > > In doing some performance investigations using qpid::messaging over 1.0, in > particular as message size got larger, I saw much lower throughput and lots > of cpu used. From callgrind it looked like this was from shuffliing up the > buffer in pn_dispatcher_output. Because of the threading in qpid::messaging, > it was possible for the application to generate too much output using the > top-half of the engine API before the IO was done for the bottom half. Fixing > that in qpid:messaging improved performance. > There may perhaps be something that proton could do to make users more aware > of this (e.g. a log message if the buffer exceeds a certain size? or just > documentation?) -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: dev-unsubscr...@qpid.apache.org For additional commands, e-mail: dev-h...@qpid.apache.org
