High max latency is typically due to gc, slow disk, or issues with vm
oversubscription. Turn on gc logging and verify. I've used strace in the
past to troubleshoot disk issues (fsync - although now a days it's in the
log).
Patrick
On Thu, Jul 18, 2019 at 8:40 AM rammohan ganapavarapu <
I do have a busy system total packet processed by zk is like 60k/s (30k
send and 30k received) and how about the max latencies? is ti always
constant ? for me avg latency is 0 but max latency is showing 40s how is it
possible?
On Wed, Jul 17, 2019 at 8:46 PM Michael Han wrote:
> Typing send
Typing send too soon...
>> always give avg_latency "0"
The latency metrics depends on workloads. Try hit your cluster hard with
some artificially generated heavy read / write workloads, you will see the
number deviates from 0.
>> If I recall correctly avg_latency is an int, not float
This is
>> always give avg_latency "0"
The latency metrics depends on workloads.
On Wed, Jul 17, 2019 at 1:34 AM Enrico Olivelli wrote:
> Il mar 16 lug 2019, 19:05 rammohan ganapavarapu
> ha scritto:
>
> > Hi,
> >
> > I am trying to understand how zookeeper latency calculated, mntr command
> > always
Il mar 16 lug 2019, 19:05 rammohan ganapavarapu
ha scritto:
> Hi,
>
> I am trying to understand how zookeeper latency calculated, mntr command
> always give avg_latency "0", can some one help how to calculate avg request
> latency in zookeeper?
>
Are you also taking metrics on the client?
If I recall correctly avg_latency is an int, not float.I remember
someone wanted to replace it with a float sometime recently.
Correct me if I'm wrong.
Andor
-Original Message-From: Norbert Kalmar <
nkal...@cloudera.com.INVALID>Reply-To: user@zookeeper.apache.orgTo:
Hi Ram,
ZooKeeper is very fast if deployed according to recommendations (nodes on
the same network, directly connected). It's possible it gives 0 latency on
avg, although usually it's a bit higher.
I can recommend Patrick's smoke test if you wan't to test performance.
Especially zk-smoketest and
