On Sat, 2014-02-15 at 14:46 +0100, Philippe Mouawad wrote: > Hello Oleg, > The problem is that is seems in this particular case, removing this check > it leads to 50% error. >
What kind of HttpRequestRetryHandler implementation does JMeter 2.11 use? Usually with the stale check disabled one should want to retry at least some requests automatically. > I could be explained by a max number of requests per connection setting, as > per their documentation: > - http://aws.amazon.com/articles/1904 > > "Also, don't overuse a connection. Amazon S3 will accept up to 100 requests > before it closes a connection (resulting in 'connection reset'). Rather > than having this happen, use a connection for 80-90 requests before closing > and re-opening a new connection." > > Is there by the way a configuration parameter in HttpClient to limit the > number of requests per connection ? > There is no parameter but one can use a custom ConnectionReuseStrategy to that effect --- ConnectionReuseStrategy reuseStrategy = new DefaultConnectionReuseStrategy() { @Override public boolean keepAlive( final HttpResponse response, final HttpContext context) { HttpConnection conn = (HttpConnection) context.getAttribute(HttpClientContext.HTTP_CONNECTION); long count = conn.getMetrics().getRequestCount(); if (count >= 100) { return false; } return super.keepAlive(response, context); } }; --- Hope this helps Oleg > Thanks > Regards > Philippe > > > > On Sat, Feb 15, 2014 at 12:49 PM, Oleg Kalnichevski <ol...@apache.org>wrote: > > > On Sat, 2014-02-15 at 11:23 +0100, Philippe Mouawad wrote: > > > Hello , > > > yes that's it. > > > > > > regards > > > > > > > Then, I am not sure I understand the problem. The stale connection check > > is about trading off some performance for fewer i/o errors or visa > > versa. > > > > Oleg > > > > > On Saturday, February 15, 2014, Oleg Kalnichevski < > > o...@ok2consulting.com> > > > wrote: > > > > > > > > > > > On Fri, 2014-02-14 at 15:42 +0100, Philippe Mouawad wrote: > > > > > Hello Oleg, > > > > > We set this configuration in JMeter 2.11, we got recently this bug > > report > > > > > related to this change: > > > > > https://issues.apache.org/bugzilla/show_bug.cgi?id=56119 > > > > > > > > > > This issue seems to be faced by another person: > > > > > https://twitter.com/cfwhisperer/status/428278488349417472 > > > > > > > > > > Regards > > > > > Philippe > > > > > > > > > > > > > Philippe > > > > > > > > I am not sure I remember the context. Is it about turning off stale > > > > connection checking? > > > > > > > > Oleg > > > > > > > > > > > > > > On Wed, Dec 11, 2013 at 9:50 AM, Oleg Kalnichevski <ol...@apache.org > > <javascript:;>> > > > > wrote: > > > > > > > > > > > On Tue, 2013-12-10 at 21:38 +0100, Philippe Mouawad wrote: > > > > > > > Hello Oleg, > > > > > > > Thanks for answer. > > > > > > > Wouldn't it be interesting to add some threshold or delay between > > > > each > > > > > > > check instead of doing check on each request ? > > > > > > > > > > > > > > Regards > > > > > > > Philippe > > > > > > > > > > > > > > > > > > > Philippe > > > > > > > > > > > > I am not sure it is worth the trouble. In most circumstances the > > stale > > > > > > connection check should be turned off anyway. > > > > > > > > > > > > I think it just needs to be better documented. > > > > > > > > > > > > Oleg > > > > > > > > > > > > > > > > > > > > On Mon, Dec 9, 2013 at 11:59 AM, Oleg Kalnichevski < > > ol...@apache.org<javascript:;> > > > > > > > > > > > wrote: > > > > > > > > > > > > > > > On Sun, 2013-12-08 at 21:32 +0100, Philippe Mouawad wrote: > > > > > > > > > Hello, > > > > > > > > > Profiling JMeter, I noticed an important number of > > > > > > SocketTimeoutException > > > > > > > > > being triggered without any impact on response status. > > > > > > > > > > > > > > > > > > I investigated it a bit deeper and find out it affected only > > > > > > HttpClient > > > > > > > > > implementations. > > > > > > > > > Looking a bit deeper, it is due to connection stale check > > which > > > > is > > > > > > > > enabled > > > > > > > > > by default. > > > > > > > > > This check sets a timeout to 1ms , see : > > > > > > > > > - org.apache.http.impl.io.SocketInputBuffer#isDataAvailable > > > > > > > > > - org.apache.http.impl.AbstractHttpClientConnection#isStale > > > > > > > > > > > > > > > > > > > > > > > > > > > Is this the only and best way to check for stale connection ? > > > > > > > > > > > > > > > > > > > > > > > > > > > Regards > > > > > > > > > Philippe > > > > > > > > > > > > > > > > Philippe > > > > > > > > > > > > > > > > I personally do not know of a different (better) way of > > finding out > > > > > > > > whether or not a blocking connection is still valid. > > > > > > > > > > > > > > > > Oleg > > > > > > > > > > > > > > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > > > > > > To unsubscribe, e-mail: > > httpclient-users-unsubscr...@hc.apache.org<javascript:;> > > > > > > > > For additional commands, e-mail: > > > > httpclient-users-h...@hc.apache.org <javascript:;> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > > > > To unsubscribe, e-mail: httpclient-users-unsubscr...@hc.apache.org > > <javascript:;> > > > > > > For additional commands, e-mail: > > httpclient-users-h...@hc.apache.org<javascript:;> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > > To unsubscribe, e-mail: httpclient-users-unsubscr...@hc.apache.org > > <javascript:;> > > > > For additional commands, e-mail: httpclient-users-h...@hc.apache.org > > <javascript:;> > > > > > > > > > > > > > > > > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: httpclient-users-unsubscr...@hc.apache.org For additional commands, e-mail: httpclient-users-h...@hc.apache.org
