Messages in this thread | | | Date | Fri, 13 Sep 2002 21:06:27 -0700 | From | Andrew Morton <> | Subject | 2.5.34-mm4 |
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url: http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.34/2.5.34-mm4/
Some additional work has been performed on the new, faster sleep/wakeup facilities.
I have converted TCP/IPV4 over to use the faster wakeups. It would be appreciated if the people who are interested in (and set up for testing) high performance networking could test this out. Note however that there is no benefit to select()/poll(). That's quite a large change.
So please bear in mind that this code will only help if applications are generally sleeping in accept(), connect(), etc. At this stage I'd like to know whether this work is generally something which should be pursued further - let's be careful that the measurements are not swamped by select()/poll() wakeups.
The individual patches are:
http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.34/2.5.34-mm4/broken-out/wake-speedup.patch http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.34/2.5.34-mm4/broken-out/tcp-wakeups.patch
These apply against 2.5.26 and possibly earlier, and testing against earlier kernels would be valid. Thanks.
Changes have been made to /proc/stat which break top(1) and vmstat(1). New versions are available at http://www.zip.com.au/~akpm/linux/patches/procps-2.5.34-mm4.tar.gz and newer versions will appear at http://surriel.com/procps/
+aio-sync-iocb.patch
Ben's AIO patch conflicted with the readv/writev patch. This is Ben's patch reworked to fit on top of readv-writev.patch
+pagevec_lru_add.patch
Fix a bogon which broke reiserfs4
+taka-writev.patch
Hirokazu Takahashi's writev() speedup.
+vm-wakeups.patch
Use the auto waitqueues in the VM and block layers. Broken out of the wake-speedup patch.
+per-node-kswapd.patch
David Hansen's per-NUMA-node kswapd patch.
+topology-api.patch
Matthew Dobson's topology API.
+kswapd-reclaim-stats.patch
Add `kswapd_steal' and `pgrefill' to /proc/vmstat. The former indicates that, on a quick test, 99% of page reclaim is being performed by kswapd.
+iowait.patch
Instrumentation to show how much time is spent in disk wait. (Doesn't appear to come out in the new top(1) though?)
+tcp-wakeups.patch
Use auto-waitqueues in TCP/IPV4
linus.patch cset-1.568.19.4-to-1.661.txt.gz
scsi_hack.patch Fix block-highmem for scsi
ext3-htree.patch Indexed directories for ext3
spin-lock-check.patch spinlock/rwlock checking infrastructure
rd-cleanup.patch Cleanup and fix the ramdisk driver (doesn't work right yet)
readv-writev.patch O_DIRECT support for readv/writev
aio-sync-iocb.patch Use a sync iocb for generic_file_read
llzpr.patch Reduce scheduling latency across zap_page_range
buffermem.patch Resurrect buffermem accounting
lpp.patch ia32 huge tlb pages
lpp-update.patch hugetlbpage fixes
reversemaps-leak.patch Fix reverse map accounting leak
sharedmem.patch Add /proc/meminfo:Mapped - tha amount of memory which is mapped into pagetables
ext3-sb.patch u.ext3_sb -> generic_sbp
pagevec_lru_add.patch Run readpage before dropping the page refcount
oom-fix.patch Fix an OOM condition on big highmem machines
tlb-cleanup.patch Clean up the tlb gather code
dump-stack.patch arch-neutral dump_stack() function
wli-cleanup.patch random cleanups
madvise-move.patch move mdavise implementation into mm/madvise.c
split-vma.patch VMA splitting patch
mmap-fixes.patch mmap.c cleanup and lock ranking fixes
buffer-ops-move.patch Move submit_bh() and ll_rw_block() into fs/buffer.c
slab-stats.patch Display total slab memory in /proc/meminfo
writeback-control.patch Cleanup and extension of the writeback paths
free_area_init-cleanup.patch free_area_init() code cleanup
alloc_pages-cleanup.patch alloc_pages cleanup and optimisation
statm_pgd_range-sucks.patch Remove the pagetable walk from /proc/stat
remove-sync_thresh.patch Remove /proc/sys/vm/dirty_sync_thresh
taka-writev.patch Speed up writev
pf_nowarn.patch Fix up the handling of PF_NOWARN
jeremy.patch Spel Jermy's naim wright
queue-congestion.patch Infrastructure for communicating request queue congestion to the VM
nonblocking-ext2-preread.patch avoid ext2 inode prereads if the queue is congested
nonblocking-pdflush.patch non-blocking writeback infrastructure, use it for pdflush
nonblocking-vm.patch Non-blocking page reclaim
wake-speedup.patch Faster wakeup code
vm-wakeups.patch Use the faster wakeups in the VM and block layers
sync-helper.patch Speed up sys_sync() against multiple spindles
slabasap.patch Early and smarter shrinking of slabs
write-deadlock.patch Fix the generic_file_write-from-same-mmapped-page deadlock
buddyinfo.patch Add /proc/buddyinfo - stats on the free pages pool
free_area.patch Remove struct free_area_struct and free_area_t, use `struct free_area'
per-node-kswapd.patch Per-node kswapd instance
topology-api.patch NUMA topology API
radix_tree_gang_lookup.patch radix tree gang lookup
truncate_inode_pages.patch truncate/invalidate_inode_pages rewrite
proc_vmstat.patch Move the vm accounting out of /proc/stat
kswapd-reclaim-stats.patch Add kswapd_steal to /proc/vmstat
iowait.patch I/O wait statistics
tcp-wakeups.patch Use fast wakeups in TCP/IPV4 - 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/
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