Re: [load balancing] Bigip v4.6 benchmark problem

From: Cristian Rojas <intipu [izzat]>
Date: Mon May 17 2010 - 18:36:47 EDT

Hi Andrew, I am using Apache AB as the benchmarking tool. This is the command and the options: [root [izzat] box~]# ab -n 50000 -c 1000 -k -n 50000 = Open 50.000 connections -c 1000 = by batches of 1000 connections -k = use keepalive On the F5 side I have a VIP and a Pool with 4 Nodes, no connection limit configured. And RoundRobin. On your comment, how would I know if the F5 is throwing away handshakes? And if it thinks its been DOS'd theres nothing I could do, other than admit its for its benefit. Thanks! Cris ________________________________ From: Andrew Cook <acook [izzat]> To: Load Balancing Mailing List <lb-l [izzat]> Sent: Mon, May 17, 2010 7:00:37 PM Subject: Re: [load balancing] Bigip v4.6 benchmark problem Hey Cris, What sort of connection rates are you using? And what’s the length of each connection? How’s the BigIP setup? What profiles are you using? I’m wondering if there’s issues with lots of half-open/ queued handshakes that the BigIP is throwing away? Or if the BigIP thinks it’s being DoS’d. 4.6 was such a long time ago.... I think those brain cells were fried some time back... ;-) Cheers, Andrew Andrew Cook - Director Smartworx - creating synergies between networks and applications. 65 Hume Street, Crows Nest. NSW. 2065 Australia t: +612 9016 2880 f: +612 9016 2881 m: +61 419 253 347 email: acook [izzat] web: From:lb-l-bounces [izzat] [mailto:lb-l-bounces [izzat]] On Behalf Of Cristian Rojas Sent: Tuesday, 18 May 2010 3:27 AM To: Load Balancing Mailing List Subject: [load balancing] Bigip v4.6 benchmark problem Hi list, Im running a benchmark against a pool of 4 apaches behing a VIP. When i run the test, generating 50.000 connections against each apache, works great. When I run the test, generating 50.000 connections against the VIP i get: Completed 5000 requests Completed 10000 requests apr_socket_recv: Connection reset by peer (104) Total of 11469 requests completed Looks like F5 resets connections after 10.000 connections. Please note I am using keepalive on the benchmark test. Any hint would be greatly appreciated. Thanks Cris No virus found in this incoming message. Checked by AVG - Version: 9.0.819 / Virus Database: 271.1.1/2878 - Release Date: 05/17/10 04:26:00

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