Geheugen verbruik apache2 (mpm_prefork)

[bami82]

Beste WHT'ers,

Ik heb een vreemd probleempje met apache wat ineens lijkt te zijn onstaan.

Elke apache thread reserveert z'n 94mb aan geheugen. Hierdoor raakt de server wel is out of swap space. Het is een oude apache versie (Apache/2.0.59), draait op Solaris en heeft jaren goed gedraait.

PID USERNAME LWP PRI NICE  SIZE   RES STATE    TIME    CPU COMMAND
6774 nobody     1  59    0   94M 4624K sleep    0:00  1.03% /usr/local/apache2/bin/httpd -k start
  6775 nobody     1  59    0   94M 4624K sleep    0:00  0.55% /usr/local/apache2/bin/httpd -k start
  6771 nobody     1  59    0   94M 4624K sleep    0:00  0.54% /usr/local/apache2/bin/httpd -k start
  6773 nobody     1  59    0   94M 4624K sleep    0:00  0.39% /usr/local/apache2/bin/httpd -k start
  6816 nobody     1  59    0   94M 4624K sleep    0:00  0.38% /usr/local/apache2/bin/httpd -k start
  6813 nobody     1  59    0   94M 4624K sleep    0:00  0.00% /usr/local/apache2/bin/httpd -k start
  6790 nobody     1  59    0   94M 4624K sleep    0:00  0.00% /usr/local/apache2/bin/httpd -k start

prefork settings uit httpd.conf
<IfModule prefork.c>
StartServers 5
MinSpareServers 5
MaxSpareServers 10
MaxClients 150
MaxRequestsPerChild 0
</IfModule>

Heeft iemand een idee wat hier de oorzaak van kan zijn, en hoe ik hem weer terug kan brengen naar rond de 12mb per thread?

[bami82]

-bash-3.00# pmap 3164
3164:   /usr/local/apache2/bin/httpd -k start
00010000     512K r-x--  /usr/local/apache2/bin/httpd
00090000      40K r-x--  /usr/local/apache2/bin/httpd
000A8000      24K rwx--  /usr/local/apache2/bin/httpd
000AE000       8K rwx--  /usr/local/apache2/bin/httpd
000B0000   88576K rwx--    [ heap ]
FE980000      64K rw-s-    [ anon ]
FE9A0000      64K rwx--    [ anon ]
FE9C0000      64K rwx--    [ anon ]
FE9E0000      64K r-x--  /usr/local/apache2/modules/mod_security.so
FE9F0000      40K r-x--  /usr/local/apache2/modules/mod_security.so
FEA08000      16K rwx--  /usr/local/apache2/modules/mod_security.so
FEA10000      40K r-x--  /usr/sfw/lib/libgcc_s.so.1
FEA28000       8K rwx--  /usr/sfw/lib/libgcc_s.so.1
FEA30000     192K r-x--  /usr/local/apache2/modules/mod_jk.so
FEA60000      16K r-x--  /usr/local/apache2/modules/mod_jk.so
FEA72000      16K rwx--  /usr/local/apache2/modules/mod_jk.so
FEA76000       8K rwx--  /usr/local/apache2/modules/mod_jk.so
FEA80000      64K r-x--  /usr/local/apache2/modules/mod_rewrite.so
FEA90000      16K r-x--  /usr/local/apache2/modules/mod_rewrite.so
FEAA2000      16K rwx--  /usr/local/apache2/modules/mod_rewrite.so
FEAB0000      16K r-x--  /usr/local/apache2/modules/mod_speling.so
FEAC2000       8K rwx--  /usr/local/apache2/modules/mod_speling.so
FEAD0000      16K r-x--  /usr/local/apache2/modules/mod_vhost_alias.so
FEAE2000       8K rwx--  /usr/local/apache2/modules/mod_vhost_alias.so
FEAF0000      56K r-x--  /usr/local/apache2/modules/mod_dav_fs.so
FEB0C000       8K rwx--  /usr/local/apache2/modules/mod_dav_fs.so
FEB10000      16K r-x--  /usr/local/apache2/modules/mod_info.so
FEB22000       8K rwx--  /usr/local/apache2/modules/mod_info.so
FEB30000      64K r-x--  /usr/local/apache2/modules/mod_dav.so
FEB40000      56K r-x--  /usr/local/apache2/modules/mod_dav.so
FEB5C000      16K rwx--  /usr/local/apache2/modules/mod_dav.so
FEB70000      40K r-x--  /usr/local/apache2/modules/mod_proxy_http.so
FEB88000       8K rwx--  /usr/local/apache2/modules/mod_proxy_http.so
FEB90000      48K r-x--  /usr/local/apache2/modules/mod_proxy_ftp.so
FEBAA000       8K rwx--  /usr/local/apache2/modules/mod_proxy_ftp.so
FEBB0000       8K r-x--  /usr/local/apache2/modules/mod_proxy_connect.so
FEBC0000      16K rwx--  /usr/local/apache2/modules/mod_proxy_connect.so
FEBD0000      48K r-x--  /usr/local/apache2/modules/mod_proxy.so
FEBEA000       8K rwx--  /usr/local/apache2/modules/mod_proxy.so
FEBF0000      16K r-x--  /usr/local/apache2/modules/mod_headers.so
FEC02000       8K rwx--  /usr/local/apache2/modules/mod_headers.so
FEC10000      16K r-x--  /usr/local/apache2/modules/mod_expires.so
FEC22000       8K rwx--  /usr/local/apache2/modules/mod_expires.so
FEC30000      24K r-x--  /usr/local/apache2/modules/mod_ext_filter.so
FEC44000       8K rwx--  /usr/local/apache2/modules/mod_ext_filter.so
FEC50000      40K r-x--  /usr/local/apache2/modules/mod_auth_digest.so
FEC68000       8K rwx--  /usr/local/apache2/modules/mod_auth_digest.so
FEC70000       8K r-x--  /usr/local/apache2/modules/mod_auth_dbm.so
FEC80000       8K rwx--  /usr/local/apache2/modules/mod_auth_dbm.so
FEC90000       8K r-x--  /usr/local/apache2/modules/mod_auth_anon.so
FECA0000       8K rwx--  /usr/local/apache2/modules/mod_auth_anon.so
FECB0000      64K r-x--  /lib/libmd.so.1
FECC0000      16K r-x--  /lib/libmd.so.1
FECD4000       8K rwx--  /lib/libmd.so.1
FECE0000      32K r-x--  /lib/libaio.so.1
FECF8000       8K rwx--  /lib/libaio.so.1
FED00000    1216K r-x--  /lib/libc.so.1
FEE30000      40K rwx--  /lib/libc.so.1
FEE3A000       8K rwx--  /lib/libc.so.1
FEE40000      32K r-x--  /usr/local/lib/libgcc_s.so.1
FEE50000       8K rwx--    [ anon ]
FEE56000      16K rwx--  /usr/local/lib/libgcc_s.so.1
FEE60000       8K r-x--  /lib/libdl.so.1
FEE72000       8K rwx--  /lib/libdl.so.1
FEE80000     576K r-x--  /lib/libnsl.so.1
FEF10000       8K r-x--  /lib/libnsl.so.1
FEF22000      40K rwx--  /lib/libnsl.so.1
FEF2C000      24K rwx--  /lib/libnsl.so.1
FEF40000     192K r-x--  /lib/libresolv.so.2
FEF70000      48K r-x--  /lib/libresolv.so.2
FEF80000       8K rwx--    [ anon ]
FEF8C000      16K rwx--  /lib/libresolv.so.2
FEFA0000      48K r-x--  /lib/libsocket.so.1
FEFB0000       8K rwx--    [ anon ]
FEFBC000       8K rwx--  /lib/libsocket.so.1
FEFC0000      16K r-x--  /lib/libm.so.1
FEFD2000       8K rwx--  /lib/libm.so.1
FEFE0000      24K r-x--  /lib/librt.so.1
FEFF6000       8K rwx--  /lib/librt.so.1
FF000000     832K r-x--  /usr/local/lib/libiconv.so.2.1.0
FF0D0000      40K r-x--  /usr/local/lib/libiconv.so.2.1.0
FF0E0000       8K rwx--    [ anon ]
FF0E8000      32K rwx--  /usr/local/lib/libiconv.so.2.1.0
FF100000      64K r-x--  /usr/local/apache2/lib/libapr-0.so.0.9.12
FF110000      56K r-x--  /usr/local/apache2/lib/libapr-0.so.0.9.12
FF120000      32K rw-s-  dev:101,0 ino:1519564
FF12C000       8K rwx--  /usr/local/apache2/lib/libapr-0.so.0.9.12
FF12E000       8K rwx--  /usr/local/apache2/lib/libapr-0.so.0.9.12
FF140000      64K r-x--  /usr/local/lib/libexpat.so.0.4.0
FF150000      56K r-x--  /usr/local/lib/libexpat.so.0.4.0
FF160000      24K rwx--    [ anon ]
FF16C000      24K rwx--  /usr/local/lib/libexpat.so.0.4.0
FF180000    1216K r-x--  /usr/local/ssl/lib/libcrypto.so.0.9.8
FF2B0000      32K r-x--  /usr/local/ssl/lib/libcrypto.so.0.9.8
FF2C0000       8K rwx--    [ anon ]
FF2C6000      88K rwx--  /usr/local/ssl/lib/libcrypto.so.0.9.8
FF2DC000       8K rwx--  /usr/local/ssl/lib/libcrypto.so.0.9.8
FF2E0000       8K r-x--  /platform/sun4v/lib/libc_psr.so.1
FF2F0000       8K r-x--  /lib/libsendfile.so.1
FF302000       8K rwx--  /lib/libsendfile.so.1
FF310000      64K r-x--  /usr/local/apache2/lib/libaprutil-0.so.0.9.12
FF320000      16K r-x--  /usr/local/apache2/lib/libaprutil-0.so.0.9.12
FF332000       8K rwx--  /usr/local/apache2/lib/libaprutil-0.so.0.9.12
FF340000     192K r-x--  /usr/local/ssl/lib/libssl.so.0.9.8
FF370000      48K r-x--  /usr/local/ssl/lib/libssl.so.0.9.8
FF380000       8K rwx--    [ anon ]
FF38A000      24K rwx--  /usr/local/ssl/lib/libssl.so.0.9.8
FF3A0000      16K r-x--  /lib/libpthread.so.1
FF3B0000     192K r-x--  /lib/ld.so.1
FF3E0000      16K r-x--  /lib/ld.so.1
FF3E6000       8K rwxs-    [ anon ]
FF3F0000       8K rwx--    [ anon ]
FF3F4000       8K rwx--  /lib/ld.so.1
FF3F6000       8K rwx--  /lib/ld.so.1
FFBF0000      64K rwx--    [ stack ]
 total     96264K

Het lijkt in de heap te zitten.