kmem_malloc(4096): kmem_map too small: 536870912 total allocated

[Vladimir Sharun]

Leak in lockf, confirmed:
        lockf 80448  2516K       -   709113  32,64
        lockf 80450  2516K       -   709155  32,64
        lockf 80453  2516K       -   709199  32,64
        lockf 80452  2516K       -   709207  32,64
        lockf 80455  2516K       -   709226  32,64
        lockf 80455  2516K       -   709236  32,64
        lockf 80459  2516K       -   709250  32,64
        lockf 80461  2516K       -   709280  32,64
        lockf 80466  2516K       -   709317  32,64
        lockf 80474  2516K       -   709376  32,64
        lockf 80475  2516K       -   709396  32,64
        lockf 80477  2517K       -   709427  32,64
        lockf 80481  2517K       -   709445  32,64
        lockf 80482  2517K       -   709472  32,64
        lockf 80484  2517K       -   709488  32,64
        lockf 80490  2517K       -   709547  32,64
        lockf 80498  2517K       -   709578  32,64
        lockf 80505  2518K       -   709615  32,64
        lockf 80507  2518K       -   709647  32,64
        lockf 80510  2518K       -   709700  32,64
        lockf 80518  2518K       -   709747  32,64
        lockf 80531  2518K       -   709865  32,64
        lockf 80540  2519K       -   709940  32,64
        lockf 80561  2519K       -   710078  32,64
        lockf 80590  2520K       -   710263  32,64
        lockf 80611  2521K       -   710419  32,64
        lockf 80623  2521K       -   710512  32,64
        lockf 80625  2521K       -   710530  32,64
        lockf 80637  2522K       -   710596  32,64
        lockf 80638  2521K       -   710643  32,64
        lockf 80641  2522K       -   710681  32,64
        lockf 80656  2522K       -   710769  32,64
        lockf 80658  2522K       -   710803  32,64
        lockf 80666  2522K       -   710859  32,64
        lockf 80672  2523K       -   710899  32,64
        lockf 80675  2523K       -   710930  32,64
(output from while true; do vmstat -m | grep lockf; sleep 1 ; done)

Vladimir Sharun wrote:
 VS> We have 2xOpteron/2Gb RAM server with extrensive disk load. Every week or two
 VS> it suddenly hangs with "kmem_malloc(4096): kmem_map too small 335bla-bla allocated". 
 VS> I look onto handbook and put vm.kmem_size_max="536870912" onto /boot/loader.conf.
 VS> Today was the same with the new parameters. Is there any other solutions ?

 VS> # sysctl -a | grep kmem
 VS> vm.kmem_size: 536870912
 VS> vm.kmem_size_max: 536870912
 VS> vm.kmem_size_scale: 3

 VS> The only vm.kmem_size_max on loader.conf, no vm.kmem_size.

 VS> We're running FreeBSD 6.0-BETA5 #0: Wed Sep 28 16:54:33 EEST 2005
 VS> in i386 mode. The same was with 5.3/5.4 and NetBSD 2.0 on this machine.