Re: postgres is not using tas - Mailing list pgsql-hackers

From Luis Alberto Amigo Navarro
Subject Re: postgres is not using tas
Date
Msg-id 00ac01c1ceae$ede87370$cab990c1@atc.unican.es
Whole thread Raw
In response to postgres is not using tas  ("Luis Alberto Amigo Navarro" <lamigo@atc.unican.es>)
Responses Re: postgres is not using tas  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
hi tom
If i track a single backend during an 8 read-only queries parallel execution
these are the results(
System call summary:                       Average     Total
Name           #Calls  Time(ms)  Time(ms)
-----------------------------------------
semop            3803      0.20    774.03
select              4     19.58     78.33
recv                1      2.41      2.41
brk                 6      0.08      0.48
close               1      0.14      0.14
send                1      0.14      0.14
semctl              1      0.05      0.05
prctl               1      0.01      0.01
exit                1      0.00      0.00

I think it's a bit excessive for a 8 SMP
what do u think?
thanks and regards



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