Re: Monitoring the number of client connections

2012-12-26 Thread Rob Coli
For those playing along at home, I have filed https://issues.apache.org/jira/browse/CASSANDRA-5084 ("Cassandra should expose connected client state via JMX") as a result of this thread. =Rob -- =Robert Coli AIM>ALK - rc...@palominodb.com YAHOO - rcoli.palominob SKYPE - rcoli_palominodb

Re: Monitoring the number of client connections

2012-12-20 Thread Rob Coli
On Thu, Dec 20, 2012 at 12:41 PM, Rob Coli wrote: > So, by default Cassandra does in fact use one thread per thrift connection. Also of note is that even with hsha, an *active* connection (where synchronous storage backend is doing something) consumes a thread. Some more background at : https://i

Re: Monitoring the number of client connections

2012-12-20 Thread Rob Coli
On Wed, Dec 19, 2012 at 4:20 PM, Hiller, Dean wrote: > What? I thought cassandra was using nio so thread per connection is not > true? Here's the monkey test I used to verify my conjecture. 1) ps -eLf |grep jsvc |grep cassandra | wc -l # note number of threads 2) for name in {1..300}; do c

Re: Monitoring the number of client connections

2012-12-19 Thread Hiller, Dean
r 19, 2012 4:49 PM To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" mailto:user@cassandra.apache.org>> Subject: Re: Monitoring the number of client connections On Tue, Dec 18, 2012 at 1:37 AM, Tomas Nunez mailto:tomas.nu...@groupalia.com>> wrot

Re: Monitoring the number of client connections

2012-12-19 Thread Rob Coli
On Tue, Dec 18, 2012 at 1:37 AM, Tomas Nunez wrote: > Can you think a better way than "netstat" to get this information? Better > yet, is there anything similar to "Show processlist" in mysql? An easy/not very accurate proxy for this is the thread count within the jvm. An open connection has a t

Re: Monitoring the number of client connections

2012-12-19 Thread Edward Capriolo
In the TCP mib for SNMP (Simple Network Management Protocol) this information is available http://www.simpleweb.org/ietf/mibs/mibSynHiLite.php?category=IETF&module=TCP-MIB On Wed, Dec 19, 2012 at 12:22 AM, Michael Kjellman wrote: > netstat + cron is your friend at this point in time > > On Dec 1

Re: Monitoring the number of client connections

2012-12-18 Thread Michael Kjellman
netstat + cron is your friend at this point in time On Dec 18, 2012, at 8:25 PM, "aaron morton" mailto:aa...@thelastpickle.com>> wrote: AFAIK the count connections is not exposed. Cheers - Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpi

Re: Monitoring the number of client connections

2012-12-18 Thread aaron morton
AFAIK the count connections is not exposed. Cheers - Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com On 18/12/2012, at 10:37 PM, Tomas Nunez wrote: > Hi! > > I want to know how many client connections has each one of my cluste

Monitoring the number of client connections

2012-12-18 Thread Tomas Nunez
Hi! I want to know how many client connections has each one of my cluster nodes (to check if my load balancing is spreading in a balanced way, to check if increase in the cluster load can be related to an increase in the number of connections, and things like that). I was thinking about going with

Re: Number of client connections

2010-06-02 Thread Ran Tavory
as far as I know, only the os level limitations, e.g. typically ~60k On Thu, Jun 3, 2010 at 9:34 AM, Lev Stesin wrote: > Hi, > > Is there a limit on the number of client connections to a node? Thanks. > > -- > Lev >

Number of client connections

2010-06-02 Thread Lev Stesin
Hi, Is there a limit on the number of client connections to a node? Thanks. -- Lev