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pross
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PostPosted: Tue Feb 22, 2011 6:42 pm    Post subject: Reply with quote

bingyuan wrote:
Would you please make ck's BFS alternative?

you can de-select in menuconfig
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PostPosted: Tue Feb 22, 2011 6:53 pm    Post subject: Reply with quote

pross wrote:
bingyuan wrote:
Would you please make ck's BFS alternative?

you can de-select in menuconfig


it's not included (yet)

I added it but it wouldn't work

so I have to remake the whole patch(set)

it probably will make it in in the next version ;)
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PostPosted: Wed Feb 23, 2011 12:29 am    Post subject: Reply with quote

kernelOfTruth wrote:
pross wrote:
bingyuan wrote:
Would you please make ck's BFS alternative?

you can de-select in menuconfig


it's not included (yet)

I added it but it wouldn't work

so I have to remake the whole patch(set)

it probably will make it in in the next version ;)


Thx for your work!
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PostPosted: Fri Feb 25, 2011 8:27 am    Post subject: Reply with quote

can you provide standalone patches for SMP in dmcrypt? I was experimenting with some patches from devicemaper patchwork however with no much luck. (compiled, booted, no speedup, random freezes).

Also the fixes for ext4 and zcache would be cool. ;-)
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PostPosted: Fri Feb 25, 2011 2:56 pm    Post subject: Reply with quote

SlashBeast wrote:
can you provide standalone patches for SMP in dmcrypt? I was experimenting with some patches from devicemaper patchwork however with no much luck. (compiled, booted, no speedup, random freezes).

Also the fixes for ext4 and zcache would be cool. ;-)


* Patchwork dm crypt: scale to multiple CPUs

* zcache: look up the patch-names on lkml or spinics.net, marc.info, ...
zcache-linux-2.6.37-110205
[PATCH] staging: zcache: fix memory leak

after that apply: 2.6.37_plus_v16_zcache_linux-next_fixes.patch

and zcache_[PATCH] Allow sharing xvmalloc for zram and zcache


* ext4 fixes can be taken from the list: look the up on lkml, spinics, marc.info, etc.


I'm currently updating the patch(set) & fixing a bug which prevents it from booting on ext4 & BFS from working
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PostPosted: Fri Feb 25, 2011 5:14 pm    Post subject: Reply with quote

@bingyuan:

see :wink: :

Update10:

Quote:
testing:

* currently only BFS & CFS (with zcache) builds patches available, tarball with broken-out patches, several diff-patches will be available soon
* compile-tested - boot-tested (the one with compaction)
* includes zcache but not TOI
* if there are problems on 32 bit try the one without compaction

bump to 2.6.37.2_plus_v1

reverted (from 2.6.37.1): [PATCH] Change wait_for_completion_*_timeout to return a signed long to make BFS compile


apply the patches on top of 2.6.37.2


modular design
(cumulative optional patches for your convenience)

base-patch:

2.6.37.2_plus_v1-base-non_BFS-compaction-CFS-TOI-zcache-btrfs_new.patch (3.15 MB)
• 0 custom-flags
• 1 BFQ
• 2 dm-crypt multi-cpu
• 3 fadvise (v6), for rsync
• 4 ck-patchset
• 5 zram (+fixes) + zram & xvmalloc 64K page fixes and optimizations
• 6 incorrect unlikely & likely cleanups
• 7 io-less dirty throttling
• 8 vmscan: protect exectuable page from inactive list scan
• 9 mmu-preemptible (v6)
• 10 jhash 3
• 11 mm: Avoid possible deadlock caused by too_many_isolated()
• 12 fix __set_page_dirty_no_writeback() return value
• 13 some cfq, pm, reiserfs, gcc 4.5 inlining fixes & more
• 14 SFB network scheduler
• 15 squashfs + lzma support
• 16 usb mouse polling
• .
• 18 kswapd
• .
• 21 ext4 fixes
• .
• 23 memmove, cfq, smp, rtmutex fixes; usb-storage support for ums-realtek
• 24 ureadahead, radix_tree fixes
• .
• 26 coordinated flush requests
• 27 delayed tickless during load, ksoftirq fixes, uvesa/vesafb fixes; "remove 8 bytes of padding from block_device on 64bit builds"
• 28 inode data integrity patches [probably needs to be merged manually, when not applying patches in ladder order]
• 29 reiser4
• 30 slqb
• .
• 32 linux-phc
• 33 Improve drain pages performance on large systems; fbcondecor

optional:

• memory compaction
• BFS, CFS [both are mutually exclusive]
• some 2.6.38 fixes & changes
• TOI [zcache and TOI are mutually exclusive]
• latest btrfs fixes & changes


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PostPosted: Fri Feb 25, 2011 9:47 pm    Post subject: Reply with quote

sweet. that is amazing.
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PostPosted: Fri Feb 25, 2011 10:51 pm    Post subject: Reply with quote

odd, i got an error while compiling the cfs version. it says: kernel/sched.c:3280: error: implicit declaration of function ‘TIMER_DEFERRED_INITIALIZER’
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PostPosted: Fri Feb 25, 2011 11:11 pm    Post subject: Reply with quote

raj7095 wrote:
odd, i got an error while compiling the cfs version. it says: kernel/sched.c:3280: error: implicit declaration of function ‘TIMER_DEFERRED_INITIALIZER’


which of the CFS patches exactly ?

you enabled anything fancy out of the scheduler options ?
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PostPosted: Fri Feb 25, 2011 11:58 pm    Post subject: Reply with quote

sorry but page 1 is real confusion. who knows which patch is which.
i'll wait until things are cleared.
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PostPosted: Sat Feb 26, 2011 12:18 am    Post subject: Reply with quote

tranquilcool wrote:
sorry but page 1 is real confusion. who knows which patch is which.
i'll wait until things are cleared.


better now ? :wink:

just get patches from

"0) individual patch-sets"


you guys wanted broken-out & choice now you have it - now stop whining :P


edit:

ok, now I made some additional drastic changes in

the appearance of the thread


hope that helps :)
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PostPosted: Sat Feb 26, 2011 12:49 am    Post subject: Reply with quote

i am using the one WITH compaction and zcache. the version that isnt cfs from 2.6.38
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PostPosted: Sat Feb 26, 2011 12:55 am    Post subject: Reply with quote

raj7095 wrote:
i am using the one WITH compaction and zcache. the version that isnt cfs from 2.6.38


ok, well I should have it more clearer in the description, sorry:

the CFS changes are the ones >2.6.37 and thus from 2.6.38 (and newer)

and that applies for ALL the CFS patch(sets)

except of course the base-patch :(



so you're trying:

"2.6.37.2_plus_v1_CFS_compaction_zcache_new.patch"



could you please try to revert the following patch whether it fixes your problem ?:

[tip:sched/core] sched: Untangle cpu-load and timekeeping code


strangely for me it compiled fine and works :?
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PostPosted: Sat Feb 26, 2011 1:19 am    Post subject: Reply with quote

it compiles cleanly now. don't get that error anymore.
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PostPosted: Sat Feb 26, 2011 1:37 am    Post subject: Reply with quote

cfs from 2.6.38 makes my cursor feel a little smoother than 2.6.37. weird thing is cfs with additional stuff compiles fine without doing anything. anyways, on a side note, i now figured out why bfs in zen kernel felt slower. it was just zen tune settings. it turns out lowering rr_interval than the default setting leads to a much lower throughput. so, once we selected desktop profile, it slowed down the entire kernel because rr_interval is set way too low. thats why your kernel with bfs felt much faster compared to zen kernel, but when i lowered the rr_interval in your kernel, it slowed down as well.
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PostPosted: Sat Feb 26, 2011 2:54 am    Post subject: Reply with quote

with either

* 2.6.37.2_plus_v1_BFS_compaction_zcache_new.patch (3.53 MB)

OR

* 2.6.37.2_plus_v1_BFS_no-compaction_zcache.patch (3.5 MB)

no zcache reported in dmesg.

./zcache.stats gives the following errors;


/sys/kernel/mm/cleancache/cleancache_puts : 0
/sys/kernel/mm/cleancache/cleancache_succ_gets : 0
/sys/kernel/mm/cleancache/cleancache_failed_gets : 0
/sys/kernel/mm/frontswap/curr_pages : 0
/sys/kernel/mm/frontswap/succ_puts : 0
/sys/kernel/mm/frontswap/gets : 0
/sys/kernel/mm/zcache/curr_obj_count : cat: /sys/kernel/mm/zcache/curr_obj_count: No such file or directory
/sys/kernel/mm/zcache/curr_obj_count_max : cat: /sys/kernel/mm/zcache/curr_obj_count_max: No such file or directory
/sys/kernel/mm/zcache/curr_objnode_count : cat: /sys/kernel/mm/zcache/curr_objnode_count: No such file or directory
/sys/kernel/mm/zcache/curr_objnode_count_max : cat: /sys/kernel/mm/zcache/curr_objnode_count_max: No such file or directory
/sys/kernel/mm/zcache/flush_total : cat: /sys/kernel/mm/zcache/flush_total: No such file or directory
/sys/kernel/mm/zcache/flush_found : cat: /sys/kernel/mm/zcache/flush_found: No such file or directory
/sys/kernel/mm/zcache/flobj_total : cat: /sys/kernel/mm/zcache/flobj_total: No such file or directory
/sys/kernel/mm/zcache/flobj_found : cat: /sys/kernel/mm/zcache/flobj_found: No such file or directory
/sys/kernel/mm/zcache/failed_eph_puts : cat: /sys/kernel/mm/zcache/failed_eph_puts: No such file or directory
/sys/kernel/mm/zcache/failed_pers_puts : cat: /sys/kernel/mm/zcache/failed_pers_puts: No such file or directory
/sys/kernel/mm/zcache/zbud_curr_raw_pages : cat: /sys/kernel/mm/zcache/zbud_curr_raw_pages: No such file or directory
/sys/kernel/mm/zcache/zbud_curr_zpages : cat: /sys/kernel/mm/zcache/zbud_curr_zpages: No such file or directory
/sys/kernel/mm/zcache/zbud_curr_zbytes : cat: /sys/kernel/mm/zcache/zbud_curr_zbytes: No such file or directory
/sys/kernel/mm/zcache/zbud_cumul_zpages : cat: /sys/kernel/mm/zcache/zbud_cumul_zpages: No such file or directory
/sys/kernel/mm/zcache/zbud_cumul_zbytes : cat: /sys/kernel/mm/zcache/zbud_cumul_zbytes: No such file or directory
/sys/kernel/mm/zcache/evicted_raw_pages : cat: /sys/kernel/mm/zcache/evicted_raw_pages: No such file or directory
/sys/kernel/mm/zcache/evicted_unbuddied_pages : cat: /sys/kernel/mm/zcache/evicted_unbuddied_pages: No such file or directory
/sys/kernel/mm/zcache/evicted_buddied_pages : cat: /sys/kernel/mm/zcache/evicted_buddied_pages: No such file or directory
/sys/kernel/mm/zcache/failed_alloc : cat: /sys/kernel/mm/zcache/failed_alloc: No such file or directory
/sys/kernel/mm/zcache/failed_get_free_pages : cat: /sys/kernel/mm/zcache/failed_get_free_pages: No such file or directory
/sys/kernel/mm/zcache/compress_poor : cat: /sys/kernel/mm/zcache/compress_poor: No such file or directory
/sys/kernel/mm/zcache/put_to_flush : cat: /sys/kernel/mm/zcache/put_to_flush: No such file or directory
/sys/kernel/mm/zcache/aborted_preload : cat: /sys/kernel/mm/zcache/aborted_preload: No such file or directory
/sys/kernel/mm/zcache/aborted_shrink : cat: /sys/kernel/mm/zcache/aborted_shrink: No such file or directory
/sys/kernel/mm/zcache/zbud_buddied_count : cat: /sys/kernel/mm/zcache/zbud_buddied_count: No such file or directory
/sys/kernel/mm/zcache/zbpg_unused_list_count : cat: /sys/kernel/mm/zcache/zbpg_unused_list_count: No such file or directory
/sys/kernel/mm/zcache/zbud_unbuddied_list_counts : cat: /sys/kernel/mm/zcache/zbud_unbuddied_list_counts: No such file or directory
/sys/kernel/mm/zcache/zbud_cumul_chunk_counts : cat: /sys/kernel/mm/zcache/zbud_cumul_chunk_counts: No such file or directory
MemTotal: 3373800 kB
MemFree: 2091672 kB
Active(file): 173556 kB
Inactive(file): 473136 kB
pgpgin 617655
pgpgout 21144
pswpin 0
pswpout 0
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PostPosted: Sat Feb 26, 2011 3:43 am    Post subject: Reply with quote

tranquilcool wrote:
with either

* 2.6.37.2_plus_v1_BFS_compaction_zcache_new.patch (3.53 MB)

OR

* 2.6.37.2_plus_v1_BFS_no-compaction_zcache.patch (3.5 MB)

no zcache reported in dmesg.

./zcache.stats gives the following errors;


[snip]


yeah,

thanks for reporting !

the whole patchset is suffering from this problem :?


seems like a patch didn't play well

I also had rubbed my eyes in astonishment why there wasn't any mentioning of zcache in the logs:


Quote:
Update11:

updated:

* broken-out (individual) patches "broken-out_2.6.37.2_plus_.7z"

hotfix

apply on top of all 2.6.37.2_plus_v1* patches that contain zcache (currently: ALL)

* 2.6.37.2_plus_v1_zcache_broken_btrfs-fix.patch (5.77 KB)

fix broken zcache: reverting "[PATCH] Allow sharing xvmalloc for zram and zcache"
fix btrfs support [upstream]: btrfs now should work fine with zcache enabled

md5sum:
e5cb9c722bc011c01d2a7f1d90839548 2.6.37.2_plus_v1_zcache_broken_btrfs-fix.patch


latency problems with memory compaction ?

try applying the following 2 patches [not tested yet]:

* [PATCH 1/2] mm: compaction: Minimise the time IRQs are disabled while isolating free pages
* [PATCH 2/2] mm: compaction: Minimise the time IRQs are disabled while isolating pages for migration

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PostPosted: Sat Feb 26, 2011 8:03 am    Post subject: Reply with quote

kernelOfTruth wrote:
tranquilcool wrote:
with either

* 2.6.37.2_plus_v1_BFS_compaction_zcache_new.patch (3.53 MB)

OR

* 2.6.37.2_plus_v1_BFS_no-compaction_zcache.patch (3.5 MB)

no zcache reported in dmesg.

./zcache.stats gives the following errors;


[snip]


yeah,

thanks for reporting !

the whole patchset is suffering from this problem :?


seems like a patch didn't play well

I also had rubbed my eyes in astonishment why there wasn't any mentioning of zcache in the logs:


Quote:
Update11:

updated:

* broken-out (individual) patches "broken-out_2.6.37.2_plus_.7z"

hotfix

apply on top of all 2.6.37.2_plus_v1* patches that contain zcache (currently: ALL)

* 2.6.37.2_plus_v1_zcache_broken_btrfs-fix.patch (5.77 KB)

fix broken zcache: reverting "[PATCH] Allow sharing xvmalloc for zram and zcache"
fix btrfs support [upstream]: btrfs now should work fine with zcache enabled

md5sum:
e5cb9c722bc011c01d2a7f1d90839548 2.6.37.2_plus_v1_zcache_broken_btrfs-fix.patch


latency problems with memory compaction ?

try applying the following 2 patches [not tested yet]:

* [PATCH 1/2] mm: compaction: Minimise the time IRQs are disabled while isolating free pages
* [PATCH 2/2] mm: compaction: Minimise the time IRQs are disabled while isolating pages for migration


problem solved. zcache now reports in logs.
thanks.
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PostPosted: Sat Feb 26, 2011 9:37 am    Post subject: Reply with quote

@kernelOfTruth,
thx, everything goes well!
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PostPosted: Sat Feb 26, 2011 2:36 pm    Post subject: Reply with quote

@kernelOfTruth, get an error/bug(with 2.6.37.2_plus_v1_BFS_compaction_zcache_new.patch, 32bit):

When I build the kernel with
Code:
[*] Allow for memory compaction
Then I can't access my windows patitions, the error info
Quote:
bingyuan@Tux ~ $ ls /media/sda6
ls: reading directory /media/sda6: Cannot allocate memory
but this windows patition is mounted
Quote:
bingyuan@Tux ~ $ mount | grep sda6
/dev/sda6 on /media/sda6 type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)

Then I try this(leave other configs unchanged)
Code:
[ ] Allow for memory compaction
now everything goes well!
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PostPosted: Sat Feb 26, 2011 3:24 pm    Post subject: Reply with quote

bingyuan wrote:
@kernelOfTruth, get an error/bug(with 2.6.37.2_plus_v1_BFS_compaction_zcache_new.patch, 32bit):

When I build the kernel with
Code:
[*] Allow for memory compaction
Then I can't access my windows patitions, the error info
Quote:
bingyuan@Tux ~ $ ls /media/sda6
ls: reading directory /media/sda6: Cannot allocate memory
but this windows patition is mounted
Quote:
bingyuan@Tux ~ $ mount | grep sda6
/dev/sda6 on /media/sda6 type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)

Then I try this(leave other configs unchanged)
Code:
[ ] Allow for memory compaction
now everything goes well!


thanks for reporting, bingyuan !

8O

I haven't tested ntfs-3g yet, will see if that happens, too, on 64 bit


it seems, it's a known problem that 32bit + memory compaction don't play well at the moment

:arrow: this will get fixed upstream with 2.6.39 (?) when they are merged into mainline

afaik Steven from zen-kernel has reverted memory compaction for this very reason from zen


I haven't looked through the code but to be sure that your memory doesn't get heavily fragmented when not using memory compaction (and having those modifications in your source):

could you please use:

"2.6.37.2_plus_v1_BFS_no-compaction_zcache.patch" ?

instead of 2.6.37.2_plus_v1_BFS_compaction_zcache_new.patch


that's the reason why I created that no-compaction (no memory compaction) patches for you 32bit folks :)

and that's also the only difference between those - so you won't lose any other features
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PostPosted: Sat Feb 26, 2011 5:26 pm    Post subject: Reply with quote

Is there any chance of adding the transparent-hugepages patches? I dunno if it's a safe idea, what with all the other memory patches here already, but I wanted to try it...
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PostPosted: Sat Feb 26, 2011 5:41 pm    Post subject: Reply with quote

Ant_P wrote:
Is there any chance of adding the transparent-hugepages patches? I dunno if it's a safe idea, what with all the other memory patches here already, but I wanted to try it...


the best bet would be to try it on top of the no-compaction kernel(patches)

the latest is

transparent_hugepage-33 ?

crap ! how many patches are in that series 8O


edit:

some more info on THP (transparent hugepages) & benchmarks:

* Speeding Up The Linux Kernel With Transparent Hugepage Support

* A 200K kernel patch that makes some things go faster

edit2:

it looks like

following changes are needed:

* [revert] compaction needs to be left out (D'oh ! - who have thought :P ) - so NO improvement & taking advantage of the THP for you guys having problems with memory compaction already (especially 32bit) :cry:
* [revert] the kswapd changes
* [revert] 8_mm-lru_cache_add_lru_tail.patch
* [revert] a patch from 2.6.37.1 reverted: mm-page-allocator-adjust-the-per-cpu-counter-threshold-when-memory-is-low.patch
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Last edited by kernelOfTruth on Sat Feb 26, 2011 9:09 pm; edited 1 time in total
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PostPosted: Sat Feb 26, 2011 8:36 pm    Post subject: Reply with quote

Trying to build with the no-compaction patch (on its own) and this happened:
Code:
  GEN     .version
  CHK     include/generated/compile.h
  UPD     include/generated/compile.h
  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
kernel/built-in.o: In function `cpu_stop_cpu_callback':
stop_machine.c:(.cpuinit.text+0xc22): undefined reference to `sched_set_stop_task'
make: *** [.tmp_vmlinux1] Error 1

.config
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kernelOfTruth
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PostPosted: Sat Feb 26, 2011 9:05 pm    Post subject: Reply with quote

Ant_P wrote:
Trying to build with the no-compaction patch (on its own) and this happened:
Code:
  GEN     .version
  CHK     include/generated/compile.h
  UPD     include/generated/compile.h
  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
kernel/built-in.o: In function `cpu_stop_cpu_callback':
stop_machine.c:(.cpuinit.text+0xc22): undefined reference to `sched_set_stop_task'
make: *** [.tmp_vmlinux1] Error 1

.config


for reference:

so you're trying to compile 2.6.37.2_plus_v1_BFS_no-compaction_zcache.patch :


any modifications beside that ?
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2.6.37.2_plus_v1: BFS, CFS,THP,compaction, zcache or TOI
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