Also we noticed these warnings - should we change the environment to make these on each node?
2014-12-29 11:32:14.564 [warning] <0.339.0> riak_kv_env: sysctl net.core.rmem_max is 124928, should be at least 8388608) 2014-12-29 11:32:14.564 [warning] <0.339.0> riak_kv_env: sysctl net.core.netdev_max_backlog is 1000, should be at least 10000) 2014-12-29 11:32:14.564 [warning] <0.339.0> riak_kv_env: sysctl net.core.somaxconn is 128, should be at least 40000) 2014-12-29 11:32:14.564 [warning] <0.339.0> riak_kv_env: sysctl net.ipv4.tcp_max_syn_backlog is 2048, should be at least 40000) 2014-12-29 11:32:14.565 [warning] <0.339.0> riak_kv_env: sysctl net.ipv4.tcp_fin_timeout is 60, should be no more than 15) 2014-12-29 11:32:14.565 [warning] <0.339.0> riak_kv_env: sysctl net.ipv4.tcp_keepalive_intvl is 75 , should be no more than 30) 2014-12-29 11:32:14.565 [warning] <0.339.0> riak_kv_env: sysctl net.ipv4.tcp_tw_reuse is 0, should be 1) 2014-12-29 11:33:02.528 [warning] <10924.36.0> OS_MON (memsup) called by <10924.36.0>, not started 2014-12-29 11:33:02.534 [warning] <10924.45.0> OS_MON (memsup) called by <10924.45.0>, not started On 29 December 2014 at 12:08, Sargun Dhillon <sar...@sargun.me> wrote: > The bucket (type) that you're working with -- what are your > allow_mult, and last_write_wins settings? > > On Mon, Dec 29, 2014 at 4:05 AM, Jason Ryan <jason.r...@trustev.com> > wrote: > > It seems to move between 4 keys in particular, these keys are actually > empty > > at the moment (i.e. an empty JSON document). > > > > CPU utilization is close to zero. > > > > Can't see anything in particular, bar the error message I just posted > > before. > > > > Jason > > > > > > On 29 December 2014 at 11:58, Ciprian Manea <cipr...@basho.com> wrote: > >> > >> Hi Jason, > >> > >> Are these random timeouts happening for only one key, or is common for > >> more? > >> > >> What is the CPU utilisation in the cluster when you're experience these > >> timeouts? > >> > >> Can you spot anything peculiar in your server's $ dmesg outputs? Any I/O > >> errors there? > >> > >> > >> Regards, > >> Ciprian > >> > >> On Mon, Dec 29, 2014 at 1:55 PM, Sargun Dhillon <sar...@sargun.me> > wrote: > >>> > >>> Several things: > >>> 1) I recommend you have a 5-node cluster: > >>> > http://basho.com/why-your-riak-cluster-should-have-at-least-five-nodes/ > >>> 2) What version of Riak are you using? > >>> 3) What backend(s) are you using? > >>> 4) What's the size of your keyspace? > >>> 5) Are you actively rewriting keys, or writing keys to the cluster? > >>> 6) Do you know how much I/O the cluster is currently doing? > >>> > >>> On Mon, Dec 29, 2014 at 2:51 AM, Jason Ryan <jason.r...@trustev.com> > >>> wrote: > >>> > Hi, > >>> > > >>> > We are getting random timeouts from our application (>60seconds) when > >>> > we try > >>> > to retrieve a key from our Riak cluster (4 nodes with a load balancer > >>> > in > >>> > front of them). Our application just uses the standard REST API to > >>> > query > >>> > Riak. > >>> > > >>> > We are pretty new to Riak - so would like to understand how best to > >>> > debug > >>> > this issue? Is there any good pointers on what to start with? This is > >>> > our > >>> > production cluster. > >>> > > >>> > Thanks, > >>> > Jason > >>> > > >>> > > >>> > This message is for the named person's use only. If you received this > >>> > message in error, please immediately delete it and all copies and > >>> > notify the > >>> > sender. You must not, directly or indirectly, use, disclose, > >>> > distribute, > >>> > print, or copy any part of this message if you are not the intended > >>> > recipient. Any views expressed in this message are those of the > >>> > individual > >>> > sender and not Trustev Ltd. Trustev is registered in Ireland No. > 516425 > >>> > and > >>> > trades from 2100 Cork Airport Business Park, Cork, Ireland. > >>> > > >>> > > >>> > _______________________________________________ > >>> > riak-users mailing list > >>> > riak-users@lists.basho.com > >>> > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com > >>> > > >>> > >>> _______________________________________________ > >>> riak-users mailing list > >>> riak-users@lists.basho.com > >>> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com > >> > >> > > > > > > This message is for the named person's use only. If you received this > > message in error, please immediately delete it and all copies and notify > the > > sender. You must not, directly or indirectly, use, disclose, distribute, > > print, or copy any part of this message if you are not the intended > > recipient. Any views expressed in this message are those of the > individual > > sender and not Trustev Ltd. Trustev is registered in Ireland No. 516425 > and > > trades from 2100 Cork Airport Business Park, Cork, Ireland. > -- This message is for the named person's use only. If you received this message in error, please immediately delete it and all copies and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient. Any views expressed in this message are those of the individual sender and not Trustev Ltd. Trustev is registered in Ireland No. 516425 and trades from 2100 Cork Airport Business Park, Cork, Ireland.
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