about postgresql process

Hi everybody

What's this in command 'ps ux'. If these processes appears The Server
load average: 100.99, 100.74, 86.85.
How can I reslove it.
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postgres 35044 34.2 0.0 0 0 ? Rs 00:19 50:42 [postmaster]
postgres 35216 34.6 0.0 0 0 ? Rs 00:19 51:15 [postmaster]
postgres 35339 34.1 0.0 0 0 ? Rs 00:19 50:33 [postmaster]
postgres 35557 34.6 0.0 0 0 ? Rs 00:19 51:13 [postmaster]
postgres 36399 34.6 0.0 0 0 ? Rs 00:20 50:55 [postmaster]
postgres 36884 34.9 0.0 0 0 ? Rs 00:21 51:10 [postmaster]
postgres 36896 34.5 0.0 0 0 ? Rs 00:21 50:33 [postmaster]
postgres 37048 34.7 0.0 0 0 ? Rs 00:21 50:52 [postmaster]
postgres 37127 34.3 0.0 0 0 ? Rs 00:21 50:12 [postmaster]
postgres 37815 23.0 0.0 0 0 ? Rs Mar25 51:35 [postmaster]
postgres 39117 35.4 0.0 0 0 ? Rs 00:22 51:21 [postmaster]
postgres 39152 34.8 0.0 0 0 ? Rs 00:23 50:21 [postmaster]
postgres 39538 34.9 0.0 0 0 ? Rs 00:23 50:24 [postmaster]
postgres 39578 34.8 0.0 0 0 ? Rs 00:23 50:15 [postmaster]
postgres 41154 35.8 0.0 0 0 ? Rs 00:24 51:07 [postmaster]
postgres 41295 35.1 0.0 0 0 ? Rs 00:25 50:01 [postmaster]
postgres 41854 36.2 0.0 0 0 ? Rs 00:25 51:25 [postmaster]
postgres 42241 35.3 0.0 0 0 ? Rs 00:26 49:56 [postmaster]
postgres 42407 35.4 0.0 0 0 ? Rs 00:26 50:07 [postmaster]
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Sorry,*/I/****/am/****/not/****/a/****/good/****/English/****/speaker/*

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Yours sincerely,
Qi Wang
Edgesoft (China) Co.,Ltd
F26th Block B,Zhongli Building,
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