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---
title: Connection Thread Settings and Performance
---
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When many peer processes are started concurrently, you can improve the cluster connect time by setting the p2p.HANDSHAKE\_POOL\_SIZE system property value to the expected number of members.
This property controls the number of threads that can be used to establish new TCP/IP connections between peer caches. The threads are discarded if they are idle for 60 seconds.
The default value for p2p.HANDSHAKE\_POOL\_SIZE is 10. This command-line specification sets the number of threads to 100:
``` pre
-Dp2p.HANDSHAKE_POOL_SIZE=100
```