diff options
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/kern_timeout.c | 14 | ||||
| -rw-r--r-- | sys/kern/subr_param.c | 12 |
2 files changed, 14 insertions, 12 deletions
diff --git a/sys/kern/kern_timeout.c b/sys/kern/kern_timeout.c index df459cd..ecc65fc 100644 --- a/sys/kern/kern_timeout.c +++ b/sys/kern/kern_timeout.c @@ -47,6 +47,7 @@ __FBSDID("$FreeBSD$"); #include <sys/systm.h> #include <sys/bus.h> #include <sys/callout.h> +#include <sys/file.h> #include <sys/interrupt.h> #include <sys/kernel.h> #include <sys/ktr.h> @@ -101,6 +102,11 @@ SYSCTL_INT(_debug, OID_AUTO, to_avg_mpcalls_dir, CTLFLAG_RD, &avg_mpcalls_dir, 0, "Average number of MP direct callouts made per callout_process call. " "Units = 1/1000"); #endif + +static int ncallout; +SYSCTL_INT(_kern, OID_AUTO, ncallout, CTLFLAG_RDTUN, &ncallout, 0, + "Number of entries in callwheel and size of timeout() preallocation"); + /* * TODO: * allocate more timeout table slots when table overflows. @@ -252,6 +258,14 @@ kern_timeout_callwheel_alloc(caddr_t v) timeout_cpu = PCPU_GET(cpuid); cc = CC_CPU(timeout_cpu); + + /* + * Calculate the size of the callout wheel and the preallocated + * timeout() structures. + */ + ncallout = imin(16 + maxproc + maxfiles, 18508); + TUNABLE_INT_FETCH("kern.ncallout", &ncallout); + /* * Calculate callout wheel size, should be next power of two higher * than 'ncallout'. diff --git a/sys/kern/subr_param.c b/sys/kern/subr_param.c index 0a3580b..825a3a0 100644 --- a/sys/kern/subr_param.c +++ b/sys/kern/subr_param.c @@ -91,7 +91,6 @@ int maxprocperuid; /* max # of procs per user */ int maxfiles; /* sys. wide open files limit */ int maxfilesperproc; /* per-proc open files limit */ int msgbufsize; /* size of kernel message buffer */ -int ncallout; /* maximum # of timer events */ int nbuf; int ngroups_max; /* max # groups per process */ int nswbuf; @@ -109,8 +108,6 @@ u_long sgrowsiz; /* amount to grow stack */ SYSCTL_INT(_kern, OID_AUTO, hz, CTLFLAG_RDTUN, &hz, 0, "Number of clock ticks per second"); -SYSCTL_INT(_kern, OID_AUTO, ncallout, CTLFLAG_RDTUN, &ncallout, 0, - "Number of pre-allocated timer events"); SYSCTL_INT(_kern, OID_AUTO, nbuf, CTLFLAG_RDTUN, &nbuf, 0, "Number of buffers in the buffer cache"); SYSCTL_INT(_kern, OID_AUTO, nswbuf, CTLFLAG_RDTUN, &nswbuf, 0, @@ -327,15 +324,6 @@ init_param2(long physpages) TUNABLE_INT_FETCH("kern.nbuf", &nbuf); /* - * XXX: Does the callout wheel have to be so big? - * - * Clip callout to result of previous function of maxusers maximum - * 384. This is still huge, but acceptable. - */ - ncallout = imin(16 + maxproc + maxfiles, 18508); - TUNABLE_INT_FETCH("kern.ncallout", &ncallout); - - /* * The default for maxpipekva is min(1/64 of the kernel address space, * max(1/64 of main memory, 512KB)). See sys_pipe.c for more details. */ |
