Messages in this thread | | | Date | Thu, 28 Nov 2002 12:06:28 +0100 | From | KELEMEN Peter <> | Subject | Re: NFS performance ... |
| |
* Marc-Christian Petersen (m.c.p@wolk-project.de) [20021124 15:23]:
Marc, Andrea,
> I think Andrea and me have something in our kernels that may > cause it. For me I don't know what that can be. I even have no > idea what it can be :(
The culprit turned out to be an inherited CONFIG_NFS_DIRECTIO setting. Having the client kernel (2.4.20rc2aa1) this option turned off, performance is stable 4 MB/sec (server hasn't changed). This is almost twice as good as with 2.4.19-rmap14b.
I understand the CONFIG_NFS_DIRECTIO warning in Configure.help, but why does it affect 1) client performance and 2) shouldn't it only matter for files opened with open(..., O_DIRECT)?
> Peter, have you also tested v3 over tcp?
No, for various administrative reasons.
Peter
-- .+'''+. .+'''+. .+'''+. .+'''+. .+'' Kelemen Péter / \ / \ / fuji@elte.hu .+' `+...+' `+...+' `+...+' `+...+' - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |