Date: Sat, 15 Dec 2018 11:32:11 +0000 (UTC) From: Edward Tomasz Napierala <trasz@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r342114 - head/sys/rpc/rpcsec_gss Message-ID: <201812151132.wBFBWBeU058001@repo.freebsd.org>
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Author: trasz Date: Sat Dec 15 11:32:11 2018 New Revision: 342114 URL: https://svnweb.freebsd.org/changeset/base/342114 Log: Add kern.rpc.gss.client_max, to make it possible to bump it easily. This can drastically lower the load on gssd(8) on large NFS servers. Submitted by: Per Andersson <pa at chalmers dot se> Reviewed by: rmacklem@ MFC after: 2 weeks Sponsored by: Chalmers University of Technology Differential Revision: https://reviews.freebsd.org/D18393 Modified: head/sys/rpc/rpcsec_gss/svc_rpcsec_gss.c Modified: head/sys/rpc/rpcsec_gss/svc_rpcsec_gss.c ============================================================================== --- head/sys/rpc/rpcsec_gss/svc_rpcsec_gss.c Sat Dec 15 10:38:07 2018 (r342113) +++ head/sys/rpc/rpcsec_gss/svc_rpcsec_gss.c Sat Dec 15 11:32:11 2018 (r342114) @@ -171,9 +171,22 @@ struct svc_rpc_gss_cookedcred { #define CLIENT_HASH_SIZE 256 #define CLIENT_MAX 128 +u_int svc_rpc_gss_client_max = CLIENT_MAX; + +SYSCTL_NODE(_kern, OID_AUTO, rpc, CTLFLAG_RW, 0, "RPC"); +SYSCTL_NODE(_kern_rpc, OID_AUTO, gss, CTLFLAG_RW, 0, "GSS"); + +SYSCTL_UINT(_kern_rpc_gss, OID_AUTO, client_max, CTLFLAG_RW, + &svc_rpc_gss_client_max, 0, + "Max number of rpc-gss clients"); + +static u_int svc_rpc_gss_client_count; +SYSCTL_UINT(_kern_rpc_gss, OID_AUTO, client_count, CTLFLAG_RD, + &svc_rpc_gss_client_count, 0, + "Number of rpc-gss clients"); + struct svc_rpc_gss_client_list svc_rpc_gss_client_hash[CLIENT_HASH_SIZE]; struct svc_rpc_gss_client_list svc_rpc_gss_clients; -static size_t svc_rpc_gss_client_count; static uint32_t svc_rpc_gss_next_clientid = 1; static void @@ -669,7 +682,7 @@ svc_rpc_gss_timeout_clients(void) */ sx_xlock(&svc_rpc_gss_lock); client = TAILQ_LAST(&svc_rpc_gss_clients, svc_rpc_gss_client_list); - while (svc_rpc_gss_client_count > CLIENT_MAX && client != NULL) { + while (svc_rpc_gss_client_count > svc_rpc_gss_client_max && client != NULL) { svc_rpc_gss_forget_client_locked(client); sx_xunlock(&svc_rpc_gss_lock); svc_rpc_gss_release_client(client);
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