1. I was wrong about the 500,000 sessions. Those were 500,000 sessions
since HAProxy was started (started on March 25th).
The sync_gateway has crashed and restarted since then. The last time it
restarted was 2 days and 12 hours ago, so the current running instance of
the sync_gateway has not handled all of those sessions. It has handled 2.5
days of traffic now.
2 and 3 these number came from the couchbase server dashboard (gets per
sec) and (sets per sec).
I have not changed any of the documents in 5 days. The only time the
documents change is when I change them with the REST protocol by using the
admin port.
The app users only pull the documents. Basically all the documents are
read only on the app. I'm not sure why the couchbase server is showing any
writes and assumed that the sync_gateway was saving little documents
periodically.
4. To get the current connections I used lsof -p <pid> | grep -i
established | wc -l on the sync_gateway server.
A new update to my app went live in the app store (yesterday) where I
changed the Puller to not use continuous mode, so I expect less traffic on
the sync_gateway going forward. That would mean less connections.
Memory usage continues to increase however.
total used free shared
buffers cached
Mem: 6153524 4030928 2122596 216 152852 242036
>From the top command...
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
538 root 20 0 4085080 3.365g 5960 S 1.0 57.3 80:19.47
sync_gateway
compare to my earlier top
538 root 20 0 3765652 2.349g 5960 S 1.3 40.0 35:11.40
sync_gateway
It's now using 57% of the memory where before it was using 40%
On Thursday, April 2, 2015 at 3:18:13 PM UTC-7, Adam Fraser wrote:
>
> I don't know of any current issues with memory usage related to
> attachments.
>
> I'm not sure I completely understand your environment usage, based on your
> notes. Can you confirm the following?
>
> 1. A server that has been up for a day or two has had 500,000 sessions in
> that time
> 2. Each sync gateway node averages 85 reads/sec
> 3. Each sync gateway node averages less than one write per second - and
> zero writes in the last five days?
> 4. You only have 94 open connections
>
> In particular, how does the 500k number from #1 align with the 94 number
> from #4? How are you measuring the number of connections?
>
> Thanks,
> Adam
>
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