DPA_COLLECTOR using high memory usage

High memory usage on dpa_collector make the system slow.

Top Memory users
vsize    cputime started        pid user command
19215624       10:07 18:48:50 28451     root dpa_collector

pr 11 07:45:06 suusag21 genunix: [ID 163280 kern.notice] sh: Cannot map /lib/ld.so.1
Apr 11 07:46:13 suusag21 genunix: [ID 470503 kern.warning] WARNING: Sorry, no swap space to grow stack for pid 7883 (cron)
Apr 11 07:47:44 suusag21 sshd[8477]: [ID 800047 auth.crit] fatal: xmalloc: out of memory (allocating 4096 bytes)
Apr 11 07:47:45 suusag21 last message repeated 1 time
Apr 11 07:49:26 suusag21 genunix: [ID 470503 kern.warning] WARNING: Sorry, no swap space to grow stack for pid 8514 (cron)
Apr 11 07:52:47 suusag21 inetd[496]: [ID 702911 daemon.error] Unable to fork inetd_start method of instance svc:/network/vnetd/tcp:default: Not enough space
Apr 11 07:52:49 suusag21 last message repeated 1 time
Apr 11 07:52:57 suusag21 genunix: [ID 470503 kern.warning] WARNING: Sorry, no swap space to grow stack for pid 9450 (cron)
Apr 11 07:54:38 suusag21 genunix: [ID 470503 kern.warning] WARNING: Sorry, no swap space to grow stack for pid 9464 (cron)
Apr 11 07:56:31 suusag21 genunix: [ID 470503 kern.warning] WARNING: Sorry, no swap space to grow stack for pid 10799 (cron)
Apr 11 07:58:30 suusag21 genunix: [ID 470503 kern.warning] WARNING: Sorry, no swap space to grow stack for pid 10827 (cron)
Apr 11 08:01:04 suusag21 genunix: [ID 470503 kern.warning] WARNING: Sorry, no swap space to grow stack for pid 11631 (cron)
Apr 11 08:01:04 suusag21 genunix: [ID 470503 kern.warning] WARNING: Sorry, no swap space to grow stack for pid 11621 (cron)
Apr 11 08:04:09 suusag21 genunix: [ID 470503 kern.warning] WARNING: Sorry, no swap space to grow stack for pid 11796 (cron)
Apr 11 08:05:08 suusag21 genunix: [ID 470503 kern.warning] WARNING: Sorry, no swap space to grow stack for pid 11815 (cron)