d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

The Call For Testing had no reports of operational problems and

Browse Source 
found that performance was no worse and usually better when running
with TRIM consolidation. Performance improvement was most noticable
when multiple large files are released in a short period of time.

Thus, TRIM consolidation is being enabled by default. Should
operational problems be found, it can be disabled using the command
`sysctl vfs.ffs.dotrimcons=0'. This variable can also be set as a
tunable if early disabling is necessary.

Approved by:  re (gjb)
Sponsored by: Netflix
This commit is contained in:
Kirk McKusick 2018-09-06 23:28:35 +00:00
parent ecdc974571
commit 4b6a2c497e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=338517
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/ufs/ffs/ffs_alloc.c
View File

@ -484,8 +484,8 @@ static int doreallocblks = 1;
SYSCTL_INT(_vfs_ffs, OID_AUTO, doreallocblks, CTLFLAG_RW, &doreallocblks, 0,
"enable block reallocation");
static int dotrimcons = 0;
SYSCTL_INT(_vfs_ffs, OID_AUTO, dotrimcons, CTLFLAG_RW, &dotrimcons, 0,
static int dotrimcons = 1;
SYSCTL_INT(_vfs_ffs, OID_AUTO, dotrimcons, CTLFLAG_RWTUN, &dotrimcons, 0,
"enable BIO_DELETE / TRIM consolidation");
static int maxclustersearch = 10;