Date: Tue, 14 Dec 2010 22:30:34 +0000 From: Alexander Best <arundel@freebsd.org> To: freebsd-emulation@freebsd.org Subject: futexes and massive malloc(9) use Message-ID: <20101214223034.GA3536@freebsd.org>
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hi there, i just stumbled upon the fact that vmstat -m reports a massive amount of malloc(9) requests coming from futexes. for me it's higher than any other type. also every request made is only 128 bytes. these calls seem to be responsible for this: linux_futex.c:193: tmpf = malloc(sizeof(*tmpf), M_FUTEX, M_WAITOK | M_ZERO); linux_futex.c:223: *wp = malloc(sizeof(struct waiting_proc), M_FUTEX_WP, M_WAITOK); the #requests are ~ 5 billion with uptime reporting ~ 3 days. might this be one of the reasons for the performance issues with flash e.g.? cheers. alex -- a13x
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