Re: Meaning of avgTimePerRequest avgRequestsPerSecond in SOLR stats page
hi , am also confused abt the same when doing the maths results are different rajat -- View this message in context: http://lucene.472066.n3.nabble.com/Meaning-of-avgTimePerRequest-avgRequestsPerSecond-in-SOLR-stats-page-tp1922692p3984848.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: Meaning of avgTimePerRequest avgRequestsPerSecond in SOLR stats page
Thanks Erick. -- View this message in context: http://lucene.472066.n3.nabble.com/Meaning-of-avgTimePerRequest-avgRequestsPerSecond-in-SOLR-stats-page-tp1922692p1932275.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: Meaning of avgTimePerRequest avgRequestsPerSecond in SOLR stats page
average time per request is the total time spent servicing X requests divided by X (in milliseconds I believe). If no searches are being processed, this number doesn't change. It's a measure of how long it takes, on average, to service a single request. avrRequests per second is the total time since you started Solr divided by the total number of requests. It's really a measure of how fast requests come in. Best Erick On Thu, Nov 18, 2010 at 3:57 AM, Shanmugavel SRD srdshanmuga...@gmail.comwrote: Can anyone please explain me about avgTimePerRequest avgRequestsPerSecond in SOLR stats page? Thanks, Shanmugavel SRD -- View this message in context: http://lucene.472066.n3.nabble.com/Meaning-of-avgTimePerRequest-avgRequestsPerSecond-in-SOLR-stats-page-tp1922692p1922692.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: Meaning of avgTimePerRequest avgRequestsPerSecond in SOLR stats page
We have recently upgraded some of our solr instances to 1.4.1 from 1.3. Interestingly both these parameter values got increased after our upgrade. When avgRequestsPerSecond increases, avgTimePerRequest should be increased. But it is not in our case.. Any thoughts ? -- View this message in context: http://lucene.472066.n3.nabble.com/Meaning-of-avgTimePerRequest-avgRequestsPerSecond-in-SOLR-stats-page-tp1922692p1924031.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: Meaning of avgTimePerRequest avgRequestsPerSecond in SOLR stats page
No, that's not true. As long as you're not limited by some resource, avgRequestsPerSecond can grow without impacting avgTimePerRequest much. avgTimePerRequest is the elapsed time from the beginning of Solr handling the request to the end, measured in clock time. Say it takes 100 ms. Of that 100 ms, let's say (and these are examples, not real data) that 50ms is sitting around waiting for disk. A second query could be being serviced in that same interval, so at 1 QPS you'd have an averageTimePreRequest of 100ms. Ditto at 2 QPS. That said, at some point you *will* get a relationship between the two numbers, when some resource is being used 100%. At that point as your QPS rises, so will your avgTimePerRequest. Of course it's not that clean, but that's the idea... Best Erick On Thu, Nov 18, 2010 at 9:02 AM, mesenthil senthilkumar.arumu...@mtvncontractor.com wrote: We have recently upgraded some of our solr instances to 1.4.1 from 1.3. Interestingly both these parameter values got increased after our upgrade. When avgRequestsPerSecond increases, avgTimePerRequest should be increased. But it is not in our case.. Any thoughts ? -- View this message in context: http://lucene.472066.n3.nabble.com/Meaning-of-avgTimePerRequest-avgRequestsPerSecond-in-SOLR-stats-page-tp1922692p1924031.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: Meaning of avgTimePerRequest avgRequestsPerSecond in SOLR stats page
Erick, Thanks a lot for explaining about these two fields. Could you please let us know which one we have to look for if we have to monitor the performance? avgTimePerRequest OR avgRequestsPerSecond. Thanks, SRD -- View this message in context: http://lucene.472066.n3.nabble.com/Meaning-of-avgTimePerRequest-avgRequestsPerSecond-in-SOLR-stats-page-tp1922692p1925407.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: Meaning of avgTimePerRequest avgRequestsPerSecond in SOLR stats page
avgTimePerRequest is the important one for your users. They don't care if you're processing a million QPS, they care how long *their* query took. But you also have to pay attention to longest response times Best Erick On Thu, Nov 18, 2010 at 12:54 PM, Shanmugavel SRD srdshanmuga...@gmail.comwrote: Erick, Thanks a lot for explaining about these two fields. Could you please let us know which one we have to look for if we have to monitor the performance? avgTimePerRequest OR avgRequestsPerSecond. Thanks, SRD -- View this message in context: http://lucene.472066.n3.nabble.com/Meaning-of-avgTimePerRequest-avgRequestsPerSecond-in-SOLR-stats-page-tp1922692p1925407.html Sent from the Solr - User mailing list archive at Nabble.com.
