beam.smp writing a lot

I have a 2 node cluster setup of developer preview 2 release candidate 3.

I have a couchbase bucket with what I think is not a lot of items (26,240) that I'm using to track pageview statistics of websites. The actual documents stored are just numbers.

Bucket Name Nodes Item Count Ops/sec Disk Fetches/sec RAM Usage/Quota Disk Usage
pageviews 2 26240 338 0 12.8MB / 800MB 95.5MB

As shown above there are about 338 ops/sec at this sample time. That doesn't feel like a lot to me. One of the servers is writing out 5.6 M/s shown below in iotop. It looks like beam.smp is doing a lot of that.

I just don't understand why it would need to write THAT much for this type of load, something feels wrong. Causes a lot of io wait.

Total DISK READ: 0.00 B/s | Total DISK WRITE: 5.65 M/s
TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND
1009 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.12 % [kjournald]
2619 be/4 couchbas 0.00 B/s 106.29 K/s 0.00 % 0.35 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2615 be/4 couchbas 0.00 B/s 114.16 K/s 0.00 % 0.27 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2613 be/4 couchbas 0.00 B/s 106.29 K/s 0.00 % 0.26 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2628 be/4 couchbas 0.00 B/s 78.73 K/s 0.00 % 0.24 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2625 be/4 couchbas 0.00 B/s 114.16 K/s 0.00 % 0.23 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2621 be/4 couchbas 0.00 B/s 102.35 K/s 0.00 % 0.23 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2617 be/4 couchbas 0.00 B/s 102.35 K/s 0.00 % 0.23 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2623 be/4 couchbas 0.00 B/s 94.48 K/s 0.00 % 0.22 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2622 be/4 couchbas 0.00 B/s 82.67 K/s 0.00 % 0.21 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2614 be/4 couchbas 0.00 B/s 74.80 K/s 0.00 % 0.20 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2627 be/4 couchbas 0.00 B/s 90.54 K/s 0.00 % 0.20 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2624 be/4 couchbas 0.00 B/s 70.86 K/s 0.00 % 0.16 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2616 be/4 couchbas 0.00 B/s 70.86 K/s 0.00 % 0.16 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2620 be/4 couchbas 0.00 B/s 62.99 K/s 0.00 % 0.15 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2626 be/4 couchbas 0.00 B/s 62.99 K/s 0.00 % 0.15 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
2618 be/4 couchbas 0.00 B/s 66.92 K/s 0.00 % 0.14 % beam.smp -A 16 -sbt u -P 327680 -K true -- -ro~base/var/lib/couchbase/couchbase-server.cookie"
1 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % init

Any ideas??