how get Percentile and 95th from api/historicdata.xml

Did you try to set pctmode to true in the query to receive the percentile'd values? :)

In the current PRTG Version ( 17.1.28.1032 ), the following works:

And produces the following XML output:

<?xml version="1.0" encoding="UTF-8"?>
  <histdata totalcount="12" listend="1">
   <prtg-version>17.1.28.1032</prtg-version>
   <item>
    <datetime>10.01.2017 00:00:00 - 00:05:00</datetime>
    <datetime_raw>42744.9618055556</datetime_raw>
    <value channel="Health" channelid="0">100 %</value>
    <value_raw channel="Health" channelid="0">100.0000</value_raw>
    <value channel="System CPU Load" channelid="1">5 %</value>
    <value_raw channel="System CPU Load" channelid="1">5.0000</value_raw>
    <value channel="Available Memory Percent" channelid="2">51 %</value>
    <value_raw channel="Available Memory Percent" channelid="2">50.6000</value_raw>
    <value channel="Available Memory" channelid="3">1.034 MByte</value>
    <value_raw channel="Available Memory" channelid="3">1084643737.6000</value_raw>
    <value channel="Downtime" channelid="-4">0 %</value>
    <value_raw channel="Downtime" channelid="-4">0.0000</value_raw>
    <percentile>100 %</percentile>
    <percentile_raw>0000000000001000.0000</percentile_raw>
    <coverage>100 %</coverage>
    <coverage_raw>0000010000</coverage_raw>
   </item>
   <item>
    <datetime>10.01.2017 00:05:00 - 00:10:00</datetime>
    <datetime_raw>42744.9652777778</datetime_raw>
    <value channel="Health" channelid="0">100 %</value>
    <value_raw channel="Health" channelid="0">100.0000</value_raw>
    <value channel="System CPU Load" channelid="1">5 %</value>
    <value_raw channel="System CPU Load" channelid="1">4.8000</value_raw>
    <value channel="Available Memory Percent" channelid="2">48 %</value>
    <value_raw channel="Available Memory Percent" channelid="2">47.8000</value_raw>
    <value channel="Available Memory" channelid="3">982 MByte</value>
    <value_raw channel="Available Memory" channelid="3">1029293670.4000</value_raw>
    <value channel="Downtime" channelid="-4">0 %</value>
    <value_raw channel="Downtime" channelid="-4">0.0000</value_raw>
    <percentile>100 %</percentile>
    <percentile_raw>0000000000001000.0000</percentile_raw>
    <coverage>100 %</coverage>
    <coverage_raw>0000010000</coverage_raw>
   </item>

Note: Please beware that in the current release (and probably on older versions as well), the readings of the percentile_raw are off by a factor of 10x. This is being looked into.

Best Regards,
Luciano Lingnau [Paessler Support]

Hi Luciano,

two questions:

1. The result only get total percentile, how to get separate in & out by API? refer to this
2. Is possible only get calculate 95 percentile in & out like the report template?

e.g.: i need generate a report only with result of 95th of month from snmp traffic sensor sensor:

Hello Dorian,
thank you for your reply.

This is currently no possible. The reason being that PRTG only calculates the percentile for the sensor's primary channel. Not for individual channels. As a result, obtaining such percentiles is only possible if you instead export the raw values of PRTG and calculate the percentile for the individual channels using a 3rd party tool. Excel for example.

Best Regards,
Luciano Lingnau [Paessler Support]