github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-01 11:03:43 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

SUNRPC: Bump the maximum payload size for the server

Browse Source 
Increase the maximum server-side RPC payload to 4MB. The default
remains at 1MB.

An API to adjust the operational maximum was added in 2006 by commit
596bbe53eb ("[PATCH] knfsd: Allow max size of NFSd payload to be
configured"). To adjust the operational maximum using this API, shut
down the NFS server. Then echo a new value into:

  /proc/fs/nfsd/max_block_size

And restart the NFS server.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: NeilBrown <neil@brown.name>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2025-04-28 15:37:02 -04:00
parent 8a81f16de6
commit 1e7dbad6d1
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
include/linux/sunrpc/svc.h
View File

@ -119,14 +119,14 @@ void svc_destroy(struct svc_serv **svcp);
* Linux limit; someone who cares more about NFS/UDP performance
* can test a larger number.
*
* For TCP transports we have more freedom. A size of 1MB is
* chosen to match the client limit. Other OSes are known to
* have larger limits, but those numbers are probably beyond
* the point of diminishing returns.
* For non-UDP transports we have more freedom. A size of 4MB is
* chosen to accommodate clients that support larger I/O sizes.
*/
#define RPCSVC_MAXPAYLOAD (1*1024*1024u)
#define RPCSVC_MAXPAYLOAD_TCP RPCSVC_MAXPAYLOAD
#define RPCSVC_MAXPAYLOAD_UDP (32*1024u)
enum {
RPCSVC_MAXPAYLOAD = 4 * 1024 * 1024,
RPCSVC_MAXPAYLOAD_TCP = RPCSVC_MAXPAYLOAD,
RPCSVC_MAXPAYLOAD_UDP = 32 * 1024,
};
extern u32 svc_max_payload(const struct svc_rqst *rqstp);