I think this is the article: http://virtualthreads.blogspot.com/2006/02/understanding-memory-usage-on-linux.html -b Bob Kinney wrote:
It seems to me that I recently read about this apparent (literally) issue. I think it was on one of Red Hat's magazines. It had to do with diparities in the way that ps reports memory usage. If I recall correctly, ps will report the memory for each forked process as if it was a new instance of the program itself. In other words, a program using 20MB of memory forks seven 5MB processes will appear to be using 7x25MB or 175MB, rather than 20+7x5MB or 35MB, which is actually the case. Or something like that. --- Girts <girts@xxxxxx> wrote:I'm using slackware 10.2, php 4.4.1 and apache 2.0.55. Does any of these have somekind of memory leaks ?ldd httpd libssl.so.0.9.7 => /usr/local/lib/libssl.so.0.9.7 (0x40024000) libcrypto.so.0.9.7 => /usr/local/lib/libcrypto.so.0.9.7 (0x40054000) libaprutil-0.so.0 => /www/lib/libaprutil-0.so.0 (0x4014d000) libgdbm.so.3 => /usr/lib/libgdbm.so.3 (0x40162000) libdb-4.2.so => /lib/libdb-4.2.so (0x40168000) libexpat.so.0 => /usr/lib/libexpat.so.0 (0x4023b000) libapr-0.so.0 => /www/lib/libapr-0.so.0 (0x4025b000) librt.so.1 => /lib/librt.so.1 (0x4027c000) libm.so.6 => /lib/libm.so.6 (0x4028f000) libcrypt.so.1 => /lib/libcrypt.so.1 (0x402b2000) libnsl.so.1 => /lib/libnsl.so.1 (0x402e0000) libpthread.so.0 => /lib/libpthread.so.0 (0x402f6000) libdl.so.2 => /lib/libdl.so.2 (0x40349000) libc.so.6 => /lib/libc.so.6 (0x4034e000) /lib/ld-linux.so.2 (0x40000000) Compiled in modules: core.c prefork.c http_core.c mod_cgi.c mod_negotiation.c mod_actions.c mod_userdir.c mod_so.cLoaded Modules: core prefork http_core mod_cgi mod_negotiation mod_actions mod_userdir mod_so mod_access mod_auth mod_auth_anon mod_charset_lite mod_cache mod_include mod_log_config mod_log_forensic mod_logio mod_env mod_mime_magic mod_cern_meta mod_headers mod_unique_id mod_setenvif mod_ssl mod_mime mod_status mod_autoindex mod_asis mod_info mod_dir mod_imap mod_speling mod_alias mod_rewrite sapi_apache2 mod_securityYou need to be more specific about httpd and OS versions, as well as a listof the modules used.There have been memory leaks in some modules in the past, like a leak in thehandling of rewrite maps for example. You could also search the Apache bug site.-ascs -----Original Message-----From: Girts [mailto:girts@xxxxxx] Sent: Monday, May 15, 2006 9:00 AMTo: users@xxxxxxxxxxxxxxxx Subject: [users@httpd] Apache eating memory PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 8520 www 10 0 414m 320m 4896 S 0.0 36.2 0:08.08 httpd 8631 www 9 0 195m 191m 3816 S 0.0 21.7 0:15.50 httpd 8511 www 9 0 182m 178m 4944 S 0.0 20.2 0:06.49 httpd 8516 www 9 0 20016 15m 4428 S 0.0 1.8 0:00.93 httpd 8526 www 10 0 19476 15m 3916 S 0.0 1.8 0:05.41 httpd 8513 www 9 0 17772 14m 4828 S 0.0 1.6 0:04.39 httpd 8512 www 9 0 16920 13m 4784 S 0.0 1.5 0:01.66 httpd 8518 www 9 0 16832 13m 4712 S 0.0 1.5 0:01.41 httpd 8514 www 9 0 16452 12m 4764 S 0.0 1.5 0:02.43 httpd 8515 www 9 0 16224 12m 4752 S 0.0 1.4 0:03.54 httpd 8517 www 9 0 15920 12m 4776 S 0.0 1.4 0:02.10 httpd 8519 www 9 0 15680 12m 4732 S 0.0 1.4 0:02.12 httpd 8528 www 10 0 19656 11m 3708 S 0.0 1.3 0:02.51 httpd 8630 www 11 0 15344 11m 3752 S 7.1 1.3 0:01.25 httpd 8529 www 10 0 15308 11m 3624 S 0.0 1.3 0:01.08 httpd 8531 www 9 0 15828 11m 4384 S 0.0 1.3 0:01.60 httpd 8632 www 9 0 15028 11m 3836 S 0.0 1.3 0:05.05 httpd 8525 www 9 0 15236 11m 3820 S 0.0 1.3 0:04.56 httpd 8530 www 9 0 19804 10m 3904 S 0.0 1.2 0:02.32 httpd 8523 www 9 0 108m 10m 3512 S 0.0 1.2 0:08.94 httpd Does anybody have somekind of explanation why apache after 5 min of work iseating 400 mb ram ?--------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. 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