https://httpd.apache.org/docs/2.4/en/mod/mpm_common.html#serverlimit
There is a hard limit of ServerLimit 20000 compiled into the server (for the prefork MPM 200000). This is intended to avoid nasty effects caused by typos. To increase it even further past this limit, you will need to modify the value of MAX_SERVER_LIMIT in the mpm source file and rebuild the server. Missatge de Alois Treindl <al...@astro.ch> del dia dt., 1 de juny 2021 a les 11:02: > I am using Apache on RHEL 7 since along time. > httpd-2.4.6-97.el7_9.x86_64 > > I use it with mod_mpm_prefork module, the default on Redhat. > > I see, shortly after startup, messages in errorlog like > AH00161: server reached MaxRequestWorkers setting, consider raising the > MaxRequestWorkers setting > > I have tried to do that > <IfModule mpm_prefork_module> > StartServers 20 > MinSpareServers 10 > MaxSpareServers 20 > ServerLimit 512 > MaxRequestWorkers 512 > MaxConnectionsPerChild 10000 > </IfModule> > > I also tried much higher values of ServerLimit and MaxRequestWorkers, like > 6400 or 30'000 > > It makes no difference, the error message appears. > > In server-status, I always see four lines of 64 servers, i.e. a total of > 256 servers shown, like this: > > .R_RRRRR_RRRRRKCCC_C..R_RRRKRRCC.R_CCKRKRRRRRKC.KRKR_R.__RKCRRRK > .KKRWRC_R_RCRRCKR_KRKKRRKKKKRKRC.C_RRRKR_RRRRC.K................ > ................................................................ > ................................................................ > > How can I get beyond these 256 servers? > > The machine has 64 cores, and 132 Gb RAM. > > I know that I can switch to mod_mpm_event, but before I go that way, I > would like to know why I cannot more than 256 servers in prefork mode. > > > --------------------------------------------------------------------- To > unsubscribe, e-mail: users-unsubscr...@httpd.apache.org For additional > commands, e-mail: users-h...@httpd.apache.org -- Marc Serra Organització i Sistemes -- Manxa 1876, S.L. * Ctra. Les Tries, 85. 17800 Olot (Girona)**Tel. 972 27 45 30 Fax 972 27 45 32* * Manxa Industrial | *Coneix més aquí <http://www.manxaindustrial.com> * Manxa Ferros | *Coneix més aquí <http://www.manxaferros.com/> * Manxa Ferreteria i Parament de la Llar | *Coneix més aquí <https://www.manxabricolatge.com> ** -- El contingut d’aquest correu electrònic i els seus annexos és estrictament confidencial. En el cas que no siguis el destinatari i hagis rebut aquest missatge per error, preguem que ho comuniquis al remitent i procedeixis a la seva eliminació, sense difondre, emmagatzemar o copiar el seu contingut. Imprimeix aquest correu només si és necessari. El contenido de este correo electrónico y sus anexos es estrictamente confidencial. En el caso de que no seas el destinatario y hayas recibido este mensaje por error, rogamos lo comuniques al remitente y procedas a su eliminación, sin difundir, almacenar o copiar su contenido. Imprimir este correo solo si es necesario. The content of this email and its attachments is strictly confidential. If you are not the recipient and you have received this message by mistake, please notify the sender and proceed to its elimination, without spreading, storing or copying its content. Print this email only if necessary. Le contenu de cet e-mail et de ses pièces jointes est strictement confidentiel. Dans le cas où vous n'êtes pas le destinataire et avez reçu ce message par erreur, veuillez en informer l'expéditeur et procéder à sa suppression, sans diffuser, stocker ou copier son contenu. Imprimez cet e-mail uniquement si nécessaire.
