I'm running some load tests use JMeter to get an idea of how my application performs under load on GAE (Java).
When I hit around 100 virtual users my response time starts dropping, and I notice "throttle_code=4" appearing in the log files (see below). Does anyone know what this means? Is the fact that I'm making multiple requests from the same IP hitting some kind of automatic DDOS protection? Thanks David ---- request with"throttle_code=4"; when connecting from JMeter 07-05 05:11AM 58.917 /market/1234/history?pricebars=240 200 3651ms 19cpu_ms 35kb Java/1.5.0_16,gzip(gfe) 75.101.226.4 - - [05/Jul/2010:05:12:02 -0700] "GET /market/1234/ history?pricebars=240 HTTP/1.1" 200 35566 - "Java/1.5.0_16,gzip(gfe)" "ci-pricehistory.appspot.com" ms=3652 cpu_ms=19 api_cpu_ms=0 cpm_usd=0.004527 pending_ms=3570 throttle_code=4 I 07-05 05:12AM 02.532 uk.co.cityindex.CandleServlet fetch: Loading 240 bars from cache... I 07-05 05:12AM 02.558 uk.co.cityindex.CandleServlet fetch: time:47 ---- request without "throttle" log; when connecting from browser 07-05 06:28AM 10.993 /market/1234/history?pricebars=240 200 69ms 19cpu_ms 7kb Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.99 Safari/ 533.4,gzip(gfe) 80.169.172.178 - - [05/Jul/2010:06:28:11 -0700] "GET /market/1234/ history?pricebars=240 HTTP/1.1" 200 7572 - "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/ 5.0.375.99 Safari/533.4,gzip(gfe)" "ci-pricehistory.appspot.com" ms=69 cpu_ms=19 api_cpu_ms=0 cpm_usd=0.001423 I 07-05 06:28AM 11.031 uk.co.cityindex.CandleServlet fetch: Loading 240 bars from cache... I 07-05 06:28AM 11.055 uk.co.cityindex.CandleServlet fetch: time:45 -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
