-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Martin,
On 8/4/17 4:53 AM, Martin Knoblauch wrote: > Hi, > > just need some clarification on the mod_jk load blanacing method > "Next". The documentation states: > > "If method is set to N[ext] the balancer will again use the number > of sessions to find the best worker. All remarks concerning the > Session method apply as well. The difference to the Session method > is how the session count is handled in the sliding time window. The > Next method does not divide by 2, instead it subtracts the current > minimum number. This should effectively result in a round-robin > session balancing, thus the name Next. Under high load, the two > session balancing methods will result in a similar distribution, > but Next will be better if you need to distribute small numbers of > sessions. " > > What exactly is the "current minimum number"? How is the minimum > taken? >> From all workers in the balancer set, or only the ACTive ones? I don't know for sure, but just in case this is a language issue, I believe it means it will subtract the "lowest number of sessions amongst all active workers". So if you had workers 1, 2, and 3 with 45, 50, and 55 sessions respectively, it will subtract the value 45 from all worker session counts to determine the priority for which node will get the next session. > I know, I should look it up in the code :-) The mod_jk code is some of the most difficult to read (within the Tomcat project) for a number of reasons. Hope that helps, - -chris -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJZhOv+AAoJEBzwKT+lPKRYN2UQAKUFGQTSP4FKAGQym14SfBhe ubtSXYyy8AWcEFax6VNJ61PKs6HDLzZWGrZU2A5T0q49/odTPXEOtFDls71quxvj T++Nnq7fQrZPWT7x4agOzlnna6lz4FXZBGXoOBemQ86NDuU2tG2Q4J4V+2ZMErK8 kDPXhQ4UoVXTEUuIFfCSOXsPKg4SoIwJb0F/icrypFLtTIvd/De4DRZgNXbhf/CZ 9SRjDIniJ01xUcaUK+qyyD/KX91Gp80LVp5p1ma6fzXlVf2rQe7CLR7OLLUxjHFc 3ggWc+u6jipI9JiDNsuq/YkIUIIMGhKok4d/MaE9ydZEI9u3TZqtOzPwWiFZDY8j n2ws38v7T8GHKhwRUsOEYlq/F9PaB410OgxMVLU0DO5Swdn1V5M2g6fMYTyMJTsa wE7Ur4dh8R5Yrlhh9lYaRtt+9QpQBPpkYFPbY1F6PFOs0+zWwkEEQdjn3b2HPiVm ot66WRSa5mXoEhJNIUeezxrQC4BugFte+bGcoTEkei7hPZp4msgV8zt2kMvSp0c7 hK9I0lZlnNeb3DosiFkWMABSwkLrSrLYiJb+AdC8gAhGcwFRsseRYh3gSP+yaEr2 0VV5iWYuaIhCkq1h/uVMnqId4PJjOAgB/NYD4AE2bXwbTR/qGpjMZDsWefnU6AM/ 7TnD5f8GbgGpUun0C/pg =Saq3 -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
