|Applies To||RSA Product Set: Security Analytics, RSA NetWitness Logs & Network|
RSA Product/Service Type: All-In-One for Logs Appliance, All-In-One for Packets Appliance, SA Log Hybrid and SA Packet Hybrid
RSA Version/Condition: 10.5.x,10.6.X
O/S Version: EL6
|Issue||After upgrading to Security Analytics 10.5.X or 10.6.X, the concentrator service performance on the hybrid appliance is affected.|
Indications of Concentrator Performance Issues:
|Cause||Some of the default settings in the SA 10.5.X and 10.6.X releases are not optimal for Hybrid appliances|
|Workaround||Within the SA UI use the Explore view of the Concentrator service to make the following changes:|
/sdk/config/max.concurrent.queries=13 => 8
/sdk/config/parallel.values (Parallelize all values operations)=16 => 8
/database/config/session.files=auto => 50
/database/config/meta.files=auto => 50
Above values could also be used on the Log Decoder/Packet Decoder service.
A decoder service would also have the additioanl setting of:
/database/config/packet.files=auto => 50
Concentrator Index Checks
* Check the number of slices (should be 400 or less)
/index/stats/slices.total (Index Slice Total)
* Check size of index slices
du -h index
Note: Index slices on hybrid should be <= 10G
* Check /index/config/save.session.count (600000000 by default in 10.5.X and later)
If /index/config/save.session.count=0 then index slice creation is still controlled by the service scheduler
So expand out scheduler which will look something like:
/sys/config/scheduler/351 = hours=8 pathname=/index msg=save
If /index/config/save.session.count=0 and index save schedule is every 8 hours it means there are at least 21 index slices created every week.
Assuming that the majority of queries are 7 days or less + 1 (current index slice)
/index/config/index.slices.open (Index Open Slice Count) = 0 => 22
This change should reduce the maximum amount of memory concentrator service can use for queries.
Note: Change is immediate and does not require a service restart.
If /index/config/save.session.count=600000000, then you will need to calculate how many days 600M sessions is and reduce to a number that corresponds to 1 - 7 days.
From 10.5.X, a manifest file is created in each index slice for which a CSV can be generated using the following 2 commands:
echo 'Index Slice,1st Session,Last Session,Time Start,Time End' > /root/concentrator.index.slices.csv
find /var/netwitness/concentrator* -name "managed-values-*.manifest" -print0 | xargs -0 -I % grep -E "(filename|id|time)" % | cut -d: -f2 | sed -r 's/\"managed-values-([0-9]+)\"/\1/g' | sed -r 's/([0-9]+)$/\1*/g' | tr "\n" " " | sed 's/ //g' | sed 's/*/\n/g' | sort -n >> /root/concentrator.index.slices.csv
Once /index/config/save.session.count has been lowered (to say 200000000), then /index/config/index.slices.open needs to be adjusted to reflect normal query time range.
e.g. If 200M sessions are 2 days then may only need 4 index slices for queries in the last 7 days.