I'll try to increase in my small cluster, let's see is there any improvement there, thank you. Any reason if has memory enough to not increase? Istvan Szabo Staff Infrastructure Engineer --------------------------------------------------- Agoda Services Co., Ltd. e: istvan.szabo@xxxxxxxxx --------------------------------------------------- -----Original Message----- From: Kai Stian Olstad <ceph+list@xxxxxxxxxx> Sent: Wednesday, June 14, 2023 9:02 PM To: Szabo, Istvan (Agoda) <Istvan.Szabo@xxxxxxxxx> Cc: Ceph Users <ceph-users@xxxxxxx> Subject: Re: Bottleneck between loadbalancer and rgws Email received from the internet. If in doubt, don't click any link nor open any attachment ! ________________________________ On Wed, Jun 14, 2023 at 01:44:40PM +0000, Szabo, Istvan (Agoda) wrote: >I have a dedicated loadbalancer pairs separated on 2x baremetal servers and behind the haproxy balancers I have 3 mon/mgr/rgw nodes. >Each rgw node has 2rgw on it so in the cluster altogether 6, (now I just added one more so currently 9). > >Today I see pretty high GET latency in the cluster (3-4s) and seems like the limitations are the gateways: >https://i.ibb.co/ypXFL34/1.png >In this netstat seems like maxed out the established connections around 2-3k. When I've added one more gateway it increased. > >Seems like the gateway node or the gateway instance has some limitation. What is the value which is around 1000,I haven't really found it and affect GET and limit the connections on linux? It could be rgw_max_concurrent_requests[1] witch is default at 1024. I read somewhere that it should not be increased, but could be increase it to 2048. But the recommended action was to add more gateways instead. [1] https://docs.ceph.com/en/quincy/radosgw/config-ref/#confval-rgw_max_concurrent_requests -- Kai Stian Olstad ________________________________ This message is confidential and is for the sole use of the intended recipient(s). It may also be privileged or otherwise protected by copyright or other legal rules. If you have received it by mistake please let us know by reply email and delete it from your system. It is prohibited to copy this message or disclose its content to anyone. Any confidentiality or privilege is not waived or lost by any mistaken delivery or unauthorized disclosure of the message. All messages sent to and from Agoda may be monitored to ensure compliance with company policies, to protect the company's interests and to remove potential malware. Electronic messages may be intercepted, amended, lost or deleted, or contain viruses. _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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