mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
f8fb069d47
global RPC thread pool lock and protect it with own set of locks. On synthetic benchmarks this improves peak NFS request rate by 40%.
115 lines
3.9 KiB
C
115 lines
3.9 KiB
C
/*-
|
|
* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
/* $FreeBSD$ */
|
|
|
|
#ifndef _NFS_FHA_H
|
|
#define _NFS_FHA_H 1
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/* Sysctl defaults. */
|
|
#define FHA_DEF_ENABLE 1
|
|
#define FHA_DEF_BIN_SHIFT 22 /* 4MB */
|
|
#define FHA_DEF_MAX_NFSDS_PER_FH 8
|
|
#define FHA_DEF_MAX_REQS_PER_NFSD 0 /* Unlimited */
|
|
|
|
#define FHA_HASH_SIZE 251
|
|
|
|
struct fha_ctls {
|
|
int enable;
|
|
uint32_t bin_shift;
|
|
uint32_t max_nfsds_per_fh;
|
|
uint32_t max_reqs_per_nfsd;
|
|
};
|
|
|
|
/*
|
|
* These are the entries in the filehandle hash. They talk about a specific
|
|
* file, requests against which are being handled by one or more nfsds. We
|
|
* keep a chain of nfsds against the file. We only have more than one if reads
|
|
* are ongoing, and then only if the reads affect disparate regions of the
|
|
* file.
|
|
*
|
|
* In general, we want to assign a new request to an existing nfsd if it is
|
|
* going to contend with work happening already on that nfsd, or if the
|
|
* operation is a read and the nfsd is already handling a proximate read. We
|
|
* do this to avoid jumping around in the read stream unnecessarily, and to
|
|
* avoid contention between threads over single files.
|
|
*/
|
|
struct fha_hash_entry {
|
|
struct mtx *mtx;
|
|
LIST_ENTRY(fha_hash_entry) link;
|
|
u_int64_t fh;
|
|
u_int32_t num_rw;
|
|
u_int32_t num_exclusive;
|
|
u_int8_t num_threads;
|
|
struct svcthread_list threads;
|
|
};
|
|
|
|
LIST_HEAD(fha_hash_entry_list, fha_hash_entry);
|
|
|
|
struct fha_hash_slot {
|
|
struct fha_hash_entry_list list;
|
|
struct mtx mtx;
|
|
};
|
|
|
|
/* A structure used for passing around data internally. */
|
|
struct fha_info {
|
|
u_int64_t fh;
|
|
off_t offset;
|
|
int locktype;
|
|
};
|
|
|
|
struct fha_callbacks {
|
|
rpcproc_t (*get_procnum)(rpcproc_t procnum);
|
|
int (*realign)(struct mbuf **mb, int malloc_flags);
|
|
int (*get_fh)(uint64_t *fh, int v3, struct mbuf **md, caddr_t *dpos);
|
|
int (*is_read)(rpcproc_t procnum);
|
|
int (*is_write)(rpcproc_t procnum);
|
|
int (*get_offset)(struct mbuf **md, caddr_t *dpos, int v3, struct
|
|
fha_info *info);
|
|
int (*no_offset)(rpcproc_t procnum);
|
|
void (*set_locktype)(rpcproc_t procnum, struct fha_info *info);
|
|
int (*fhe_stats_sysctl)(SYSCTL_HANDLER_ARGS);
|
|
};
|
|
|
|
struct fha_params {
|
|
struct fha_hash_slot fha_hash[FHA_HASH_SIZE];
|
|
struct sysctl_ctx_list sysctl_ctx;
|
|
struct sysctl_oid *sysctl_tree;
|
|
struct fha_ctls ctls;
|
|
struct fha_callbacks callbacks;
|
|
char server_name[32];
|
|
SVCPOOL **pool;
|
|
};
|
|
|
|
void fha_nd_complete(SVCTHREAD *, struct svc_req *);
|
|
SVCTHREAD *fha_assign(SVCTHREAD *, struct svc_req *, struct fha_params *);
|
|
void fha_init(struct fha_params *softc);
|
|
void fha_uninit(struct fha_params *softc);
|
|
int fhe_stats_sysctl(SYSCTL_HANDLER_ARGS, struct fha_params *softc);
|
|
|
|
#endif /* _KERNEL */
|
|
#endif /* _NFS_FHA_H_ */
|