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Add a sysctl for the purge run interval so that it can

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be tuned along with the rest of hostcache parameters.
The new sysctl name is `net.inet.tcp.hostcache.prune'.
This commit is contained in:
Yaroslav Tykhiy 2007-06-08 13:35:51 +00:00
parent 2ac79858a6
commit dba3c50842
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=170434
1 changed files with 8 additions and 3 deletions
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11
sys/netinet/tcp_hostcache.c
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@ -141,6 +141,7 @@ struct tcp_hostcache {
u_int cache_count;
u_int cache_limit;
int expire;
int prune;
int purgeall;
};
static struct tcp_hostcache tcp_hostcache;
@ -169,6 +170,9 @@ SYSCTL_INT(_net_inet_tcp_hostcache, OID_AUTO, count, CTLFLAG_RD,
SYSCTL_INT(_net_inet_tcp_hostcache, OID_AUTO, expire, CTLFLAG_RW,
&tcp_hostcache.expire, 0, "Expire time of TCP hostcache entries");
SYSCTL_INT(_net_inet_tcp_hostcache, OID_AUTO, prune, CTLFLAG_RW,
&tcp_hostcache.prune, 0, "Time between purge runs");
SYSCTL_INT(_net_inet_tcp_hostcache, OID_AUTO, purge, CTLFLAG_RW,
&tcp_hostcache.purgeall, 0, "Expire all entires on next purge run");
@ -208,6 +212,7 @@ tcp_hc_init(void)
tcp_hostcache.cache_limit =
tcp_hostcache.hashsize * tcp_hostcache.bucket_limit;
tcp_hostcache.expire = TCP_HOSTCACHE_EXPIRE;
tcp_hostcache.prune = TCP_HOSTCACHE_PRUNE;
TUNABLE_INT_FETCH("net.inet.tcp.hostcache.hashsize",
&tcp_hostcache.hashsize);
@ -249,7 +254,7 @@ tcp_hc_init(void)
* Set up periodic cache cleanup.
*/
callout_init(&tcp_hc_callout, CALLOUT_MPSAFE);
callout_reset(&tcp_hc_callout, TCP_HOSTCACHE_PRUNE * hz, tcp_hc_purge, 0);
callout_reset(&tcp_hc_callout, tcp_hostcache.prune * hz, tcp_hc_purge, 0);
}
/*
@ -669,9 +674,9 @@ tcp_hc_purge(void *arg)
tcp_hostcache.hashbase[i].hch_length--;
tcp_hostcache.cache_count--;
} else
hc_entry->rmx_expire -= TCP_HOSTCACHE_PRUNE;
hc_entry->rmx_expire -= tcp_hostcache.prune;
}
THC_UNLOCK(&tcp_hostcache.hashbase[i].hch_mtx);
}
callout_reset(&tcp_hc_callout, TCP_HOSTCACHE_PRUNE * hz, tcp_hc_purge, 0);
callout_reset(&tcp_hc_callout, tcp_hostcache.prune * hz, tcp_hc_purge, 0);
}