unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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kernel-hacking-2024-linux-s.../fs
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Nathan Scott f07c225036 [XFS] Improve xfsbufd delayed write submission patterns, after blktrace 
analysis.

Under a sequential create+allocate workload, blktrace reported backward
writes being issued by xfsbufd, and frequent inappropriate queue unplugs.
We now insert at the tail when moving from the delwri lists to the temp
lists, which maintains correct ordering, and we avoid unplugging queues
deep in the submit paths when we'd shortly do it at a higher level anyway.
blktrace now reports much healthier write patterns from xfsbufd for this
workload (and likely many others).

SGI-PV: 954310
SGI-Modid: xfs-linux-melb:xfs-kern:26396a

Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28 10:52:15 +10:00
..
9p [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
adfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
affs [PATCH] Really ignore kmem_cache_destroy return value 2006-09-27 08:26:10 -07:00
afs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
autofs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
autofs4 [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
befs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
bfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
cifs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
coda [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
configfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
cramfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
debugfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
devpts [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
efs [PATCH] Really ignore kmem_cache_destroy return value 2006-09-27 08:26:10 -07:00
exportfs
ext2 [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
ext3 [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
fat [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
freevxfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
fuse [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
hfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
hfsplus [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
hostfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
hpfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
hppfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
hugetlbfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
isofs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
jbd [PATCH] ext3: Fix sparse warnings 2006-09-27 08:26:10 -07:00
jffs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
jffs2 [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
jfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
lockd [PATCH] add newline to nfs dprintk 2006-09-27 08:26:19 -07:00
minix [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
msdos
ncpfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
nfs [PATCH] fs/nfs/: make code static 2006-09-27 08:26:20 -07:00
nfs_common
nfsd [PATCH] Really ignore kmem_cache_destroy return value 2006-09-27 08:26:10 -07:00
nls
ntfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
ocfs2 [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
openpromfs Move several *_SUPER_MAGIC symbols to include/linux/magic.h. 2006-09-24 11:13:19 -04:00
partitions [PATCH] fs: Conversions from kmalloc+memset to k(z|c)alloc 2006-09-27 08:26:10 -07:00
proc [PATCH] NOMMU: move the fallback arch_vma_name() to a sensible place 2006-09-27 08:26:15 -07:00
qnx4 [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
ramfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
reiserfs [PATCH] reiserfs: warn about the useless nolargeio option 2006-09-27 08:26:18 -07:00
romfs [PATCH] Really ignore kmem_cache_destroy return value 2006-09-27 08:26:10 -07:00
smbfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
sysfs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
sysv [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
udf [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
ufs [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
vfat
xfs [XFS] Improve xfsbufd delayed write submission patterns, after blktrace 2006-09-28 10:52:15 +10:00
aio.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf.c Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6 2006-09-26 13:07:55 -07:00
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
binfmt_script.c
binfmt_som.c
bio.c
block_dev.c [PATCH] lockdep: fix blkdev_open() warning 2006-08-27 11:01:29 -07:00
buffer.c [PATCH] mm: tracking shared dirty pages 2006-09-26 08:48:44 -07:00
char_dev.c [PATCH] NOMMU: Set BDI capabilities for /dev/mem and /dev/kmem 2006-09-27 08:26:14 -07:00
compat.c [PATCH] Check return value of copy_to_user in compat_sys_pselect7 2006-09-26 10:52:39 +02:00
compat_ioctl.c
dcache.c NFS: Add dentry materialisation op 2006-09-22 23:24:30 -04:00
dcookies.c
direct-io.c
dnotify.c
dquot.c
drop_caches.c
eventpoll.c [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
exec.c [PATCH] de_thread: Use tsk not current 2006-09-27 08:26:20 -07:00
fcntl.c
fifo.c
file.c [PATCH] alloc_fdtable() cleanup 2006-09-27 08:26:19 -07:00
file_table.c [PATCH] inode-diet: Move i_cdev into a union 2006-09-27 08:26:17 -07:00
filesystems.c
fs-writeback.c
inode.c [PATCH] inode-diet: Move i_cdev into a union 2006-09-27 08:26:17 -07:00
inotify.c
inotify_user.c
ioctl.c
ioprio.c [PATCH] uninline ioprio_best() 2006-08-21 10:02:50 +02:00
Kconfig [PATCH] sysctl: Allow /proc/sys without sys_sysctl 2006-09-27 08:26:19 -07:00
Kconfig.binfmt
libfs.c [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
locks.c [PATCH] fcntl(F_SETSIG) fix 2006-08-14 13:10:59 -07:00
Makefile
mbcache.c
mpage.c
namei.c [PATCH] autofs4 needs to force fail return revalidate 2006-09-27 08:26:17 -07:00
namespace.c sysfs: add proper sysfs_init() prototype 2006-09-25 21:08:39 -07:00
nfsctl.c
open.c
pipe.c [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
pnode.c
pnode.h
posix_acl.c
quota.c
quota_v1.c
quota_v2.c
read_write.c
readdir.c
select.c
seq_file.c
splice.c
stat.c [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
super.c [PATCH] add missing desctiption in super.c 2006-09-06 11:00:01 -07:00
sync.c
xattr.c
xattr_acl.c