Hi Isuru, Sorry for delay in reply,
On Tue, Mar 8, 2016 at 2:06 PM, Isuru Perera <[email protected]> wrote: > Hi Kasun, > > As you mentioned, the 2GB heap gives a better throughput than 1GB heap and > therefore it's good to do performance tests with 2GB heap. > > Since there is about 96% throughput, we may not need to do additional GC > tuning. However let's enable GC logs during the performance tests and then > we can analyze GC logs to see whether we further need to adjust any JVM > parameters. > > Is Carbon Metrics feature available in GREG 5.2.0? We also need to monitor > the committed heap size and we can view it via the "JVM Metrics" page if > Carbon Metrics feature is available. > No, Carbon Metrics feature is not available in Greg 5.2, Currently I’m working on adding Carbon Metrics feature to ES store side instead. > > With regards to Jmeter results for 60 users, I see that 90, 95 and 99 > percentile values are much higher than the average. We should do any > necessary adjustments (in JVM or in server configurations) to avoid such > behaviour. Could you please check on that? > > We have done a small analysis to find out what and when those min and max latency values occurred. We have collect individual request data(Request start time, latency, etc.) from Jmeter and plot the latency against start times.I have attached the graphs herewith. By looking at the graphs , we couldn’t find a clear pattern on when the peak values(highest latency request) occurs exactly, but there is a slight upward trend in some cases. [image: Inline image 1] Request: update asset - read all assets [image: Inline image 3] Request: delete asset - read asset [image: Inline image 5] Request: update_asset_get tags (Relative time and latency are in ms) We also tried with changing(increase the default connection pool size to 100) the *maxActive* attribute in *master-datasources.xml* hoping that individual latencies will hang around the average value , but that also didn't make any effect to 90%, 95% and 99 percentile values. Regards~ Kasun -- *Kasun Thennakoon* Software Engineer WSO2, Inc. Mobile:+94 711661919
_______________________________________________ Architecture mailing list [email protected] https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture
