Date: Mon, 28 Jul 2003 15:34:51 +0200 (CEST) From: Lukas Ertl <l.ertl@univie.ac.at> To: current@freebsd.org Subject: Highly loaded machine getting slower and slower Message-ID: <20030728151919.S334@pcle2.cc.univie.ac.at>
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Hi there, I'm having again problems with a highly loaded 5.1-current machine. The box is a 2.4GHz Dual Xeon (HTT enabled) with 1GB RAM and acts as a news server/feeder running diablo. It's pumping out 120+Mbit/sec over Gigabit without a glitch, but after some time, it's getting slower and slower, until it seems to completely freeze, but it's still alive, just _very_ unresponsive and in fact has to be rebooted. A kernel without WITNESS checks survives a few hours, a kernel with WITNESS and friends stays up longer, but in fact after one, two weeks it's the same picture. If the machine seems to be stuck again and you break into the debugger, you always get something like this: db> where _mtx_lock_sleep(c03fa6f0,0,0,0,ffffffff) at _mtx_lock_sleep+0x1e6 msleep(c21be0ec,c03fa6f0,44,c03ad35b,0) at msleep+0x888 acquire(e3a81a38,1000000,600,11000,c6f23d10) at acquire+0xbe lockmgr(c21be0ec,2,0,c6f23d10,11000) at lockmgr+0x3f7 _vm_map_lock(c21be0b0,0,0,e3a81a7c,e3a81a84) at _vm_map_lock+0x5d kmem_alloc_wait(c21be0b0,11000,c6f2b4b0,c1618378,120) at kmem_alloc_wait+0x38 kern_execve(c6f23d10,bfbff410,bfbff2fc,bfbffd60,0) at kern_execve+0x219 execve(c6f23d10,e3a81d10,c,c022c1e6,3) at execve+0x30 syscall(2f,2f,2f,bfbff490,bfbff2fc) at syscall+0x2b0 Xint0x80_syscall() at Xint0x80_syscall+0x1d --- syscall (59, FreeBSD ELF32, execve), eip = 0x481132df, esp = 0xbfbff2ec, ebp = 0 378 --- The machine is running about 250+ concurrent diablo/dnewslink processes. Any hints or ideas? regards, le -- Lukas Ertl eMail: l.ertl@univie.ac.at UNIX Systemadministrator Tel.: (+43 1) 4277-14073 Vienna University Computer Center Fax.: (+43 1) 4277-9140 University of Vienna http://mailbox.univie.ac.at/~le/
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