On 4/13/05, yan, tommy (CSG-MKG-BJ) <tommy.yan@xxxxxx> wrote: > Hi, > > For apache 2.0.53, RHEL4(2.6.9-5.ELsmp), I just started up 10000 httpd > processes (with StartServers 10000, MaxSpareServers 10000, MaxClients > 10000 in httpd.conf), and my IA32 machine got out of memory. > > This machine has 32GB mem, but when I 'cat /proc/meminfo', 'LowFree' has > just a few MB, while others in 'HighFree'. I tried same apache in rhel4 > x86_64 version, LowFree are xxGB, HighFree is zero. > > My questions is, since apache has thousands of processes(not just one), > why does it only burn out LowMem, with HighMem untouched. I'm no expert in this issue, but if I had to guess, I would say that the apache processes need to share the same memory space because they have a parent-child relationship along with shared file descriptors, shared memory, etc. You would probably find that things looked different if you launched a second instance of apache. Of course, it is no surprise that you don't see this problem on a 64bit OS, since that OS can directly address all the memory without the highmem hacks. Joshua. --------------------------------------------------------------------- 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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