apache (httpd) on FC1/i386 vs FC2/x86_64: 3-8 times as much memory consumption?

From: Axel Thimm (Axel.Thimm_at_ATrpms.net)
Date: 08/31/04

  • Next message: ayman sabry: "Re: NFS Threads" 
    Date: Tue, 31 Aug 2004 16:05:50 +0200
To: Fedora List <fedora-list@redhat.com>

    Hi,

    I recently moved a httpd mirror from i386 to x86_64 hardware. All but
    the memory capacity were scaled up (100MBit to 1GBit, Athlon to
    Opteron etc.).

    The old server is running FC1/i386 and the new one got
    FC2/x86_64. Although both distros have httpd in the same upstream
    version (2.0.50) the memory footage is quite different, and leads to
    the striking of the oom-killer on the new server:

    old (FC1/i386):

    root 3329 0.0 0.2 26900 2408 ? S Aug29 0:01 /usr/sbin/httpd
    apache 32746 0.0 0.5 28388 5984 ? S 06:01 0:03 \_ /usr/sbin/httpd
    apache 6206 0.0 0.5 28320 5968 ? S 09:31 0:02 \_ /usr/sbin/httpd
    apache 8185 0.0 0.5 28452 6080 ? S 10:09 0:04 \_ /usr/sbin/httpd
    apache 10293 0.0 0.5 28452 6056 ? S 11:07 0:03 \_ /usr/sbin/httpd
    apache 10378 0.0 0.5 28396 5984 ? S 11:09 0:03 \_ /usr/sbin/httpd
    [...]

    new (FC2/x86_64):

    root 2177 0.0 1.5 189664 15556 ? S Aug30 0:00 /usr/sbin/httpd
    apache 2273 0.0 1.7 193076 17984 ? S Aug30 0:03 \_ /usr/sbin/httpd
    apache 2282 0.0 1.7 193052 17996 ? S Aug30 0:04 \_ /usr/sbin/httpd
    apache 3125 0.0 1.7 193052 17992 ? S Aug30 0:03 \_ /usr/sbin/httpd
    apache 3993 0.0 1.7 193052 18060 ? S 01:27 0:03 \_ /usr/sbin/httpd
    apache 3994 0.0 1.7 193052 17976 ? S 01:27 0:02 \_ /usr/sbin/httpd
    apache 7193 0.0 1.7 193052 17992 ? S 05:01 0:02 \_ /usr/sbin/httpd

    Is this normal for i386 -> x86_64? Anyone running httpd on x86_64 to
    compare numbers?

    Thanks! 

    -- 
Axel.Thimm at ATrpms.net



    


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