For a moment when compacting kicks in, the bucket seems not operational.
Gotten more than a handful of the errors below.
java.lang.RuntimeException: Timed out waiting for operation
at
net.spy.memcached.internal.OperationFuture.get(OperationFuture.java:1
41)
at com.amazonaws.tvm.PingServlet$1.run(PingServlet.java:89)
at java.lang.Thread.run(Thread.java:722)
Caused by: net.spy.memcached.internal.CheckedOperationTimeoutException:
Timed ou
t waiting for operation - failing node: 192.168.75.142/192.168.75.142:11210
at
net.spy.memcached.internal.OperationFuture.get(OperationFuture.java:1
66)
at
net.spy.memcached.internal.OperationFuture.get(OperationFuture.java:1
39)
... 2 more
<https://lh5.googleusercontent.com/-S4qngv8dVHU/Uzgb1jGuTnI/AAAAAAAAADE/cSac3vun1_g/s1600/screenshot.png>
On Sunday, March 30, 2014 8:23:46 PM UTC+8, twb wrote:
>
> I am trying to do a very simple stress test. To get a rough feel of how
> much memory, how many ops/sec. So I am trying to bulk load random unique
> strings of 5 chars as keys, and 1 as value.
>
> I read that it is due to inserts much faster than eviction. I tried to
> play around with the mem_low_wat mem_high_wat but no success. But to be
> fair, I have only given couchbase 769mb of ram.
>
> Now I am doing the same test, 2 threads continuously inserts, couchbase of
> 6gb. Shall see if the memory errors happen again.
>
> But 1 more question, why am I only achieving only avg 7k ops/sec?
>
>
>
> On Sunday, March 30, 2014 2:41:05 AM UTC+8, Matt Ingenthron wrote:
>>
>> In current versions of Couchbase Server we require enough memory for
>> metadata. This is to keep operations like a get miss or an add always fast.
>>
>> In your case, you'd want to increase the memory size to store more items.
>>
>> If you could share more about your use case, it'd be helpful to us. What
>> were you trying to test for?
>>
>> Matt
>> On Mar 29, 2014 4:46 AM, twb <[email protected]> wrote:
>> By the way, the bucket type is couchbase.
>> Replica not enabled.
>> Disk Read-Write Concurrency 3.
>> Flush enabled.
>>
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