Hi Dinesh, Can you provide the exact commands you ran? Does the command hang forever? Do you have thread dumps from the members during the hang?
Anthony > On Aug 22, 2018, at 12:12 AM, Dinesh Akhand <dines...@amdocs.com> wrote: > > Hi Team, > > What will be impact of below parameter if we do't set into geode cluster . > > In our cluster we have 8M population with 11 VM and each VM having 5 JVM for > holding the data. Means 11*5 = 55 JVM holder the CUSTOMR region. > > Many time face the problem , all JVM comes comes up and joined the locator . > in list member I can see all members. > > But Command like :list REGION , assign buckets stuck in gfsh. Could you > suggest what making cause to it. > > Currently both parameter we set to 1. > > net.ipv4.tcp_slow_start_after_idle > > 0 > > By default, TCP starts with a single small segment, gradually increasing it > by one each time. This results in unnecessary slowness that impacts the start > of every request. > > net.ipv4.tcp_syncookies > > 0 > > Many default Linux installations use SYN cookies to protect the system > against malicious attacks that flood TCP SYN packets. The use of SYN cookies > dramatically reduces network bandwidth, and can be triggered by a running > Geode cluster. If your Geode cluster is otherwise protected against such > attacks, disable SYN cookies to ensure that Geode network throughput is not > affected. > NOTE: if SYN floods are an issue and SYN cookies can't be disabled, try the > following: > net.ipv4.tcp_max_syn_backlog="16384" > net.ipv4.tcp_synack_retries="1" > net.ipv4.tcp_max_orphans="400000" > > > https://cwiki.apache.org/confluence/display/GEODE/Network+Configuration+Best+Practices > > Also we set net.ipv4.tcp_abort_on_overflow = 0 . > > Thanks, > Dinesh Akhand > This message and the information contained herein is proprietary and > confidential and subject to the Amdocs policy statement, you may review at > https://www.amdocs.com/about/email-disclaimer > <https://www.amdocs.com/about/email-disclaimer> > > Amdocs Development Centre India Private Limited having CIN: > U72200PN2004PTC0188320 converted into Amdocs Development Centre India LLP (A > limited liability partnerÂship with LLP Identification Number: AAI-6901 > effective 28th Feb 2017)
