Hi, Can somebody help me with this ? Thanks Bye, Viki. On 1/26/10, Vikrama Sanjeeva <viki.sanjeeva@xxxxxxxxx> wrote: > Hi Jeff, > > Below is statistics from vmstat while everything is running including > httpd: > >>> vmstat 2 3 > kthr memory page disk faults cpu > r b w swap free re mf pi po fr de sr rm s0 s1 s3 in sy cs us sy > id > 0 0 0 32953272 20946824 11 22 0 3 3 0 0 -0 0 1 -0 872 1041 601 0 0 > 100 > 0 0 0 23225344 11281392 51 104 0 0 0 0 0 0 0 3 0 1024 1767 684 0 0 > 100 > 0 0 0 23224768 11280792 1 4 0 0 0 0 0 0 0 0 0 892 1080 473 0 0 > 100 > > So with this, I have: > Free Swap: 22 GB > Free RAM: 10 GB > > Here I am doing a defensive supposition by assuming 5/10 GB of Free RAM > "could be" occupied by future applications (if any). So, I am left with 5 > GB > of Free Memory. Same for Free Swap, assuming I am left with 5 GB Free Swap > > Putting values in MaxClient Formula: > > MaxClient = (RAM Size - some room for other processes) / Avg > HTTPD Process Size > > MaxClient = (32768 - 27648) / 12 = 426 (approx) > > Does it mean, I can set MaxClient value to 426 ? If yes, then: > > (i) I have to make sure ServerLimit is also = 426 [As per your > presentation > for MPM prefork] ? > (ii) Make sure backend server node (tomcat AJP port) can accept 426 > concurrent requests ? > > Bye, > Viki. > > > > > > > On Mon, Jan 25, 2010 at 10:54 PM, Jeff Trawick <trawick@xxxxxxxxx> wrote: > >> On Mon, Jan 25, 2010 at 1:26 PM, Vikrama Sanjeeva >> <viki.sanjeeva@xxxxxxxxx> wrote: >> > Hi All, >> > >> > Thanks Jeff for the presentation. Its informative. >> > >> > Actually, I am trying to calculate what MaxClient I can set. I know my >> > server is strong and as Danny and you said, setting 600 will not be a >> risk. >> > I however, will prefer to do some calculation to drive this value. >> > Since >> I >> > am not Solaris command expert, therefore I am having difficulty in >> > doing >> > calculation. >> > >> > My objective is to follow below formula to calculate MaxClient as >> mentioned >> > on Apache site: >> > http://httpd.apache.org/docs/2.2/misc/perf-tuning.html >> > >> > "This procedure for doing this is simple: determine the size of your >> average >> > Apache process, by looking at your process list via a tool such as top, >> and >> > divide this into your total available memory, leaving some room for >> > other >> > processes." >> > >> > As I understand, it says: (RAM Size / Avg HTTPD Process Size) - >> > some >> > room for other proceeses >> >> slight fix to your formula: >> >> Max httpd processes = (RAM Size - some room for other processes) / Avg >> HTTPD Process Size >> >> --------------------------------------------------------------------- >> The official User-To-User support forum of the Apache HTTP Server >> Project. >> See <URL:http://httpd.apache.org/userslist.html> for more info. >> To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx >> " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx >> For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx >> >> > --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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