Date: Sun, 30 Jan 2011 16:11:47 GMT From: Edward Tomasz Napierala <trasz@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 188344 for review Message-ID: <201101301611.p0UGBle9057780@skunkworks.freebsd.org>
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http://p4web.freebsd.org/@@188344?ac=10 Change 188344 by trasz@trasz_victim on 2011/01/30 16:11:02 Instead of P_THROTTLED flag and kicking processes into idle scheduling class and back we'll need something less aggressive. This is just a WIP, since p4 doesn't have 'stash' functionality. Affected files ... .. //depot/projects/soc2009/trasz_limits/sys/kern/kern_container.c#69 edit .. //depot/projects/soc2009/trasz_limits/sys/sys/proc.h#32 edit Differences ... ==== //depot/projects/soc2009/trasz_limits/sys/kern/kern_container.c#69 (text+ko) ==== @@ -773,11 +773,11 @@ PROC_LOCK_ASSERT(p, MA_OWNED); if (throttle) { - p->p_flag |= P_THROTTLED; + p->p_throttle++; newpri = PRI_MIN_IDLE; type = RTP_PRIO_IDLE; - } else if (p->p_flag & P_THROTTLED) { - p->p_flag &= ~P_THROTTLED; + } else if (p->p_throttle > 0) { + p->p_throttle--; newpri = PRI_MIN_TIMESHARE; type = RTP_PRIO_NORMAL; } else ==== //depot/projects/soc2009/trasz_limits/sys/sys/proc.h#32 (text+ko) ==== @@ -546,6 +546,7 @@ rlim_t p_cpulimit; /* (c) Current CPU limit in seconds. */ signed char p_nice; /* (c) Process "nice" value. */ int p_fibnum; /* in this routing domain XXX MRT */ + u_int p_throttle; /* (c) Resource usage accounting. */ /* End area that is copied on creation. */ #define p_endcopy p_xstat @@ -611,7 +612,6 @@ #define P_INMEM 0x10000000 /* Loaded into memory. */ #define P_SWAPPINGOUT 0x20000000 /* Process is being swapped out. */ #define P_SWAPPINGIN 0x40000000 /* Process is being swapped in. */ -#define P_THROTTLED 0x80000000 /* Throttled due to %cpu usage */ #define P_STOPPED (P_STOPPED_SIG|P_STOPPED_SINGLE|P_STOPPED_TRACE) #define P_SHOULDSTOP(p) ((p)->p_flag & P_STOPPED)
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