The time to wait for a response from the server is a certain period of time spent on passing the information packet that you sent using the browser to the server and back. The delay depends on the connection speed and the full load of all channels over the entire distance from the client to the server.
With the help of a normal stopwatch, it is impossible to measure the response time of the server, this requires specially designed services.
SERVICES DETERMINING SERVER RESPONSE TIME
There are at least a couple dozen of similar services offering such services in the global network. The most convenient and popular:
- Host-tracker.com server monitoring service
- Checking response tool Yandex server. Webmaster
- WEBO Pulsar
Traditionally, along with the BOC dimension, a report is generated on whether the site is accessible or not. In that case, if not, then its downtime is formed.
WAYS TO CHECK SERVER RESPONSE TIME
Depending on the method chosen for checking the response time of the server, the following is dispensed:
- HEAD check. With this type of verification, you can find out general information about the availability and waiting time for a response from a selected site. Only the response headers are monitored. The entire text of the answer will not be transmitted, so the VOS will be slightly less than with other methods.
- GET method check. This type of HTTP connection is used in many cases of queries. When checking with this method, you can optionally specify keywords to search for in a particular document. Compliance of such a document with the specified request contributes not only to the statement that the site is available, but also works quite correctly.
- POST checking. The most complex type of HTTP connection, used mainly for some changes of information on a particular server. This type of connection is also characterized by the majority of sites, the state of which directly depends on the data transmitted by the user. During the verification process, the user is authenticated, submits forms, etc.
The corrected average response time of the server differs from the average time by the fact that it does not take into account random measurements of emissions. Consider it this way: from 4 hours to midnight, about 120 measurements are taken for a single server. During 1 hour 6 measurements are taken. When calculating the corrected average for 24 hours, only 5 are used from the six measurements – the largest are excluded. This means that the corrected average is considered not for 120 measurements, but only for 100.
The average response time of the server is considered as the arithmetic average of the measurements taken in one day. Rejection measurements when calculating the average time is not carried out.
The maximum response time of the server is the maximum response time obtained by the measurement system during the day. This response time from the server by the calculation system is 75 seconds. But there are also small delays in the system, which can lead to the fact that this time may be increased in the report.
The minimum response time is the minimum time period for a server to respond to a system request per day. A short time can mean both good server activity and fast denial of service.
The standard deviation in relation to the corrected average is calculated from the same value as the corrected average response time. With the help of this deviation it is possible to assess the degree of stability of the server activity, or rather, all the rules under which the requests are executed. Stable can be not only reliable operation in the service requests, but also stable fast or slow service failures.