search for: vm_page_grab

Two machines (NFS Server: running ZFS / Client: disk-less), both are running FreeBSD r253506. The NFS client starts to deadlock processes within a few hours. It usually gets worse from there on. The processes stay in "D" state. I haven't been able to reproduce it when I want it to happen. I only have to wait a few hours until the deadlocks occur when traffic to the client machine

Box with fresh RELENG_7 panic under heavy network load (more than 50k connections). This panics seems to be senfile(2) related, because when sendfile disabled in nginx, I can't reproduce the problem. Backtrace in all cases like this: # kgdb kernel /spool/crash/vmcore.1 GNU gdb 6.1.1 [FreeBSD] Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General

...ot;pmap_new_proc: u_map allocation failed"); - p->p_addr = (struct user *) up; + p->p_addr = up; } - for(i = 0; i < UPAGES; i++) { + ptek = (unsigned *) vtopte((vm_offset_t) up); + + updateneeded = 0; + for(i=0;i<UPAGES;i++) { /* * Get a kernel stack page */ m = vm_page_grab(upobj, i, VM_ALLOC_NORMAL | VM_ALLOC_RETRY); - ma[i] = m; /* * Wire the page @@ -864,12 +886,26 @@ m->wire_count++; cnt.v_wire_count++; + oldpte = *(ptek + i); + /* + * Enter the page into the kernel address space. + */ + *(ptek + i) = VM_PAGE_TO_PHYS(m) | PG_RW | PG_V |...