Date: Thu, 7 Mar 2002 18:51:32 -0500 (EST) From: Jeff Roberson <jroberson@chesapeake.net> To: current@freebsd.org Subject: Call for UMA (allocator) testers. Message-ID: <20020307183325.K92683-100000@mail.chesapeake.net>
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I have an updated copy of my kernel memory allocator available for general testing. If you aren't familiar with this allocator you may want to look at the arch@ archives under "Slab allocator". This patch has been tested on SMP alpha and single proc x86. It depends on recent current changes, so fresh sources are expected. This patch is missing the necessary vmstat changes, so you will want to use 'sysctl vm.zone' to view your memory usage. I'd like people to test with WITNESS and INVARIANTS, although with these options on it is somewhat slower than the original kernel. With these disabled it is on par. If you have a SMP machine you will get witness warnings if you run low on memory. There is no real problem except that witness doesn't understand that the condition is safe. If you do test this patch, please send me an email so I know how many people are using this. If you get a lock order violation other than "acquring duplicate lock of same type" please let me know. If you get a panic, please give me a stack trace (tr in ddb) and the output of "call uma_print_stats" in the debugger if that is possible. This has been debugged and tested over several months so it is quite stable for me. Hopefully it will be stable for you too. :-) The patch and new files are available at: http://www.chesapeake.net/~jroberson/uma.tar Untar into src/sys and apply the patch. After you rerun config you should be ready to compile. Thanks, Jeff To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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