Date: Tue, 9 Mar 2010 10:11:00 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-threads@freebsd.org Cc: Sam Robb <samrobb@averesystems.com>, freebsd-gnats-submit@freebsd.org Subject: Re: threads/144558: Repeated calls to __rpc_createerr allocates multiple thread-specific data slots Message-ID: <201003091011.00097.jhb@freebsd.org> In-Reply-To: <201003081751.o28HpdCg016822@www.freebsd.org> References: <201003081751.o28HpdCg016822@www.freebsd.org>
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On Monday 08 March 2010 12:51:39 pm Sam Robb wrote: > > >Number: 144558 > >Category: threads > >Synopsis: Repeated calls to __rpc_createerr allocates multiple thread-specific data slots > >Confidential: no > >Severity: serious > >Priority: medium > >Responsible: freebsd-threads > >State: open > >Quarter: > >Keywords: > >Date-Required: > >Class: sw-bug > >Submitter-Id: current-users > >Arrival-Date: Mon Mar 08 18:00:16 UTC 2010 > >Closed-Date: > >Last-Modified: > >Originator: Sam Robb > >Release: 7.1 > >Organization: > Avere Systems > >Environment: > FreeBSD build1.arriad.com 7.1-RELEASE FreeBSD 7.1-RELEASE #0: Thu Jan 1 08:58:24 UTC 2009 root@driscoll.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 > >Description: > On the first call to __rpc_createerr() in a thread, the function attempts to allocate a thread-specific slot to hold the rpc error data. Subsequent calls from the same thread continue to allocate new thread-specific slots without freeing the first, so that repeated calls eventually result in all available thread-specific data slots being allocated. Can you try this patch instead? It changes the RPC code in libc to use pthread_once() to execute init functions that create various pthread keys used for per-thread data. http://www.FreeBSD.org/~jhb/patches/rpc_once.patch -- John Baldwin
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