On 4-6-2014 20:08, John Baldwin wrote: > Author: jhb > Date: Wed Jun 4 18:08:08 2014 > New Revision: 267071 > URL: http://svnweb.freebsd.org/changeset/base/267071 > > Log: > MFC 260999: > Increase the block-layer backend maximum number of requests to match > the AHCI command queue depth. > > Modified: > stable/10/usr.sbin/bhyve/block_if.c > Directory Properties: > stable/10/ (props changed) > > Modified: stable/10/usr.sbin/bhyve/block_if.c > ============================================================================== > --- stable/10/usr.sbin/bhyve/block_if.c Wed Jun 4 17:57:48 2014 > (r267070) > +++ stable/10/usr.sbin/bhyve/block_if.c Wed Jun 4 18:08:08 2014 > (r267071) > @@ -50,7 +50,7 @@ __FBSDID("$FreeBSD$"); > > #define BLOCKIF_SIG 0xb109b109 > > -#define BLOCKIF_MAXREQ 16 > +#define BLOCKIF_MAXREQ 32 > > enum blockop { > BOP_READ,
I once asked Peter about this, because of the trouble I had when running the bhyve_svm branch. This is not perse a good enhancement.... I've had a combination of HEAD and bhyve where running Linux and AMD would regularly generate timeouts for FPDMA for slots > 16.... After building the most recent bhyve_svm with patch set to get to a more recent almost-head-snapshot I ran some test, and did not run into these timeouts. So can very well be that fixes in HEAD got ride off the timeout. But then again I would say: thread with caution. --WjW _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
