#define LDLM_MAXREQSIZE (5 * 1024)
#define LDLM_MAXREPSIZE (1024)
- /*
- * MDS threads constants:
- *
- * Please see examples in "Thread Constants", MDS threads number will be at
- * the comparable level of old versions, unless the server has many cores.
- */
-#ifndef MDS_MAX_THREADS
-#define MDS_MAX_THREADS 1024
-#define MDS_MAX_OTHR_THREADS 256
-
-#else /* MDS_MAX_THREADS */
-#if MDS_MAX_THREADS < PTLRPC_NTHRS_INIT
-#undef MDS_MAX_THREADS
-#define MDS_MAX_THREADS PTLRPC_NTHRS_INIT
-#endif
-#define MDS_MAX_OTHR_THREADS max(PTLRPC_NTHRS_INIT, MDS_MAX_THREADS / 2)
-#endif
-
-/* default service */
-#define MDS_THR_FACTOR 8
-#define MDS_NTHRS_INIT PTLRPC_NTHRS_INIT
-#define MDS_NTHRS_MAX MDS_MAX_THREADS
-#define MDS_NTHRS_BASE min(64, MDS_NTHRS_MAX)
-
-/* read-page service */
-#define MDS_RDPG_THR_FACTOR 4
-#define MDS_RDPG_NTHRS_INIT PTLRPC_NTHRS_INIT
-#define MDS_RDPG_NTHRS_MAX MDS_MAX_OTHR_THREADS
-#define MDS_RDPG_NTHRS_BASE min(48, MDS_RDPG_NTHRS_MAX)
-
-/* these should be removed when we remove setattr service in the future */
-#define MDS_SETA_THR_FACTOR 4
-#define MDS_SETA_NTHRS_INIT PTLRPC_NTHRS_INIT
-#define MDS_SETA_NTHRS_MAX MDS_MAX_OTHR_THREADS
-#define MDS_SETA_NTHRS_BASE min(48, MDS_SETA_NTHRS_MAX)
-
-/* non-affinity threads */
-#define MDS_OTHR_NTHRS_INIT PTLRPC_NTHRS_INIT
-#define MDS_OTHR_NTHRS_MAX MDS_MAX_OTHR_THREADS
-
-#define MDS_NBUFS 64
-
-/**
- * Assume file name length = FNAME_MAX = 256 (true for ext3).
- * path name length = PATH_MAX = 4096
- * LOV MD size max = EA_MAX = 24 * 2000
- * (NB: 24 is size of lov_ost_data)
- * LOV LOGCOOKIE size max = 32 * 2000
- * (NB: 32 is size of llog_cookie)
- * symlink: FNAME_MAX + PATH_MAX <- largest
- * link: FNAME_MAX + PATH_MAX (mds_rec_link < mds_rec_create)
- * rename: FNAME_MAX + FNAME_MAX
- * open: FNAME_MAX + EA_MAX
- *
- * MDS_MAXREQSIZE ~= 4736 bytes =
- * lustre_msg + ldlm_request + mdt_body + mds_rec_create + FNAME_MAX + PATH_MAX
- * MDS_MAXREPSIZE ~= 8300 bytes = lustre_msg + llog_header
- *
- * Realistic size is about 512 bytes (20 character name + 128 char symlink),
- * except in the open case where there are a large number of OSTs in a LOV.
- */
-#define MDS_MAXREQSIZE (5 * 1024) /* >= 4736 */
-#define MDS_MAXREPSIZE (9 * 1024) /* >= 8300 */
-
-/**
- * MDS incoming request with LOV EA
- * 24 = sizeof(struct lov_ost_data), i.e: replay of opencreate
- */
-#define MDS_LOV_MAXREQSIZE max(MDS_MAXREQSIZE, \
- 362 + LOV_MAX_STRIPE_COUNT * 24)
-/**
- * MDS outgoing reply with LOV EA
- *
- * NB: max reply size Lustre 2.4+ client can get from old MDS is:
- * LOV_MAX_STRIPE_COUNT * (llog_cookie + lov_ost_data) + extra bytes
- *
- * but 2.4 or later MDS will never send reply with llog_cookie to any
- * version client. This macro is defined for server side reply buffer size.
- */
-#define MDS_LOV_MAXREPSIZE MDS_LOV_MAXREQSIZE
-
-/**
- * This is the size of a maximum REINT_SETXATTR request:
- *
- * lustre_msg 56 (32 + 4 x 5 + 4)
- * ptlrpc_body 184
- * mdt_rec_setxattr 136
- * lustre_capa 120
- * name 256 (XATTR_NAME_MAX)
- * value 65536 (XATTR_SIZE_MAX)
- */
-#define MDS_EA_MAXREQSIZE 66288
-
-/**
- * These are the maximum request and reply sizes (rounded up to 1 KB
- * boundaries) for the "regular" MDS_REQUEST_PORTAL and MDS_REPLY_PORTAL.
- */
-#define MDS_REG_MAXREQSIZE (((max(MDS_EA_MAXREQSIZE, \
- MDS_LOV_MAXREQSIZE) + 1023) >> 10) << 10)
-#define MDS_REG_MAXREPSIZE MDS_REG_MAXREQSIZE
-
-/**
- * The update request includes all of updates from the create, which might
- * include linkea (4K maxim), together with other updates, we set it to 9K:
- * lustre_msg + ptlrpc_body + UPDATE_BUF_SIZE (8K)
- */
-#define MDS_OUT_MAXREQSIZE (9 * 1024)
-#define MDS_OUT_MAXREPSIZE MDS_MAXREPSIZE
-
-/** MDS_BUFSIZE = max_reqsize (w/o LOV EA) + max sptlrpc payload size */
-#define MDS_BUFSIZE max(MDS_MAXREQSIZE + SPTLRPC_MAX_PAYLOAD, \
- 8 * 1024)
-
-/**
- * MDS_REG_BUFSIZE should at least be MDS_REG_MAXREQSIZE + SPTLRPC_MAX_PAYLOAD.
- * However, we need to allocate a much larger buffer for it because LNet
- * requires each MD(rqbd) has at least MDS_REQ_MAXREQSIZE bytes left to avoid
- * dropping of maximum-sized incoming request. So if MDS_REG_BUFSIZE is only a
- * little larger than MDS_REG_MAXREQSIZE, then it can only fit in one request
- * even there are about MDS_REG_MAX_REQSIZE bytes left in a rqbd, and memory
- * utilization is very low.
- *
- * In the meanwhile, size of rqbd can't be too large, because rqbd can't be
- * reused until all requests fit in it have been processed and released,
- * which means one long blocked request can prevent the rqbd be reused.
- * Now we set request buffer size to 160 KB, so even each rqbd is unlinked
- * from LNet with unused 65 KB, buffer utilization will be about 59%.
- * Please check LU-2432 for details.
- */
-#define MDS_REG_BUFSIZE max(MDS_REG_MAXREQSIZE + SPTLRPC_MAX_PAYLOAD, \
- 160 * 1024)
-
-/**
- * MDS_OUT_BUFSIZE = max_out_reqsize + max sptlrpc payload (~1K) which is
- * about 10K, for the same reason as MDS_REG_BUFSIZE, we also give some
- * extra bytes to each request buffer to improve buffer utilization rate.
- */
-#define MDS_OUT_BUFSIZE max(MDS_OUT_MAXREQSIZE + SPTLRPC_MAX_PAYLOAD, \
- 24 * 1024)
-
-/** FLD_MAXREQSIZE == lustre_msg + __u32 padding + ptlrpc_body + opc */
-#define FLD_MAXREQSIZE (160)
-
-/** FLD_MAXREPSIZE == lustre_msg + ptlrpc_body */
-#define FLD_MAXREPSIZE (152)
-#define FLD_BUFSIZE (1 << 12)
-
-/**
- * SEQ_MAXREQSIZE == lustre_msg + __u32 padding + ptlrpc_body + opc + lu_range +
- * __u32 padding */
-#define SEQ_MAXREQSIZE (160)
-
-/** SEQ_MAXREPSIZE == lustre_msg + ptlrpc_body + lu_range */
-#define SEQ_MAXREPSIZE (152)
-#define SEQ_BUFSIZE (1 << 12)
-
-/** MGS threads must be >= 3, see bug 22458 comment #28 */
-#define MGS_NTHRS_INIT (PTLRPC_NTHRS_INIT + 1)
-#define MGS_NTHRS_MAX 32
-
-#define MGS_NBUFS 64
-#define MGS_BUFSIZE (8 * 1024)
-#define MGS_MAXREQSIZE (7 * 1024)
-#define MGS_MAXREPSIZE (9 * 1024)
-
- /*
- * OSS threads constants:
- *
- * Given 8 as factor and 64 as base threads number
- *
- * example 1):
- * On 8-core server configured to 2 partitions, we will have
- * 64 + 8 * 4 = 96 threads for each partition, 192 total threads.
- *
- * example 2):
- * On 32-core machine configured to 4 partitions, we will have
- * 64 + 8 * 8 = 112 threads for each partition, so total threads number
- * will be 112 * 4 = 448.
- *
- * example 3):
- * On 64-core machine configured to 4 partitions, we will have
- * 64 + 16 * 8 = 192 threads for each partition, so total threads number
- * will be 192 * 4 = 768 which is above limit OSS_NTHRS_MAX(512), so we
- * cut off the value to OSS_NTHRS_MAX(512) / 4 which is 128 threads
- * for each partition.
- *
- * So we can see that with these constants, threads number wil be at the
- * similar level of old versions, unless the server has many cores.
- */
- /* depress threads factor for VM with small memory size */
-#define OSS_THR_FACTOR min_t(int, 8, \
- NUM_CACHEPAGES >> (28 - PAGE_CACHE_SHIFT))
-#define OSS_NTHRS_INIT (PTLRPC_NTHRS_INIT + 1)
-#define OSS_NTHRS_BASE 64
-#define OSS_NTHRS_MAX 512
-
-/* threads for handling "create" request */
-#define OSS_CR_THR_FACTOR 1
-#define OSS_CR_NTHRS_INIT PTLRPC_NTHRS_INIT
-#define OSS_CR_NTHRS_BASE 8
-#define OSS_CR_NTHRS_MAX 64
-
-/**
- * OST_IO_MAXREQSIZE ~=
- * lustre_msg + ptlrpc_body + obdo + obd_ioobj +
- * DT_MAX_BRW_PAGES * niobuf_remote
- *
- * - single object with 16 pages is 512 bytes
- * - OST_IO_MAXREQSIZE must be at least 1 page of cookies plus some spillover
- * - Must be a multiple of 1024
- * - actual size is about 18K
- */
-#define _OST_MAXREQSIZE_SUM (sizeof(struct lustre_msg) + \
- sizeof(struct ptlrpc_body) + \
- sizeof(struct obdo) + \
- sizeof(struct obd_ioobj) + \
- sizeof(struct niobuf_remote) * DT_MAX_BRW_PAGES)
-/**
- * FIEMAP request can be 4K+ for now
- */
#define OST_MAXREQSIZE (5 * 1024)
-#define OST_IO_MAXREQSIZE max_t(int, OST_MAXREQSIZE, \
- (((_OST_MAXREQSIZE_SUM - 1) | (1024 - 1)) + 1))
-
-#define OST_MAXREPSIZE (9 * 1024)
-#define OST_IO_MAXREPSIZE OST_MAXREPSIZE
-
-#define OST_NBUFS 64
-/** OST_BUFSIZE = max_reqsize + max sptlrpc payload size */
-#define OST_BUFSIZE max_t(int, OST_MAXREQSIZE + 1024, 16 * 1024)
-/**
- * OST_IO_MAXREQSIZE is 18K, giving extra 46K can increase buffer utilization
- * rate of request buffer, please check comment of MDS_LOV_BUFSIZE for details.
- */
-#define OST_IO_BUFSIZE max_t(int, OST_IO_MAXREQSIZE + 1024, 64 * 1024)
/* Macro to hide a typecast. */
#define ptlrpc_req_async_args(req) ((void *)&req->rq_async_args)
projects / linux-beck.git / commitdiff