IO delays problemes i need help thanks

procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
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5 2 87248 29169568 24192 19640024 0 0 3644 268 54942 128191 36 10 47 7
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7 3 87248 29303804 24192 19648696 0 0 2352 196 59326 132162 42 12 41 4
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6 3 87248 29431956 24204 19663032 0 0 3864 972 62416 134820 37 11 38 13
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4 3 87248 29877472 24224 19704820 0 0 2516 4240 65949 134310 38 12 39 11
9 5 87248 29946152 24224 19705160 0 0 3640 176 64587 136192 41 13 36 11
9 3 87248 30011848 24224 19713540 0 0 8268 520 58222 132709 38 11 39 12
3 3 87248 30078096 24232 19720328 0 0 6840 232 51713 121218 30 10 47 12
5 7 87248 30130620 24252 19735268 0 0 15064 44 54694 135094 29 11 44 15
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5 6 87248 30321964 24260 19757464 0 0 5900 1244 59055 135123 38 12 38 13
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7 5 87248 30444720 24260 19761776 0 0 916 2736 51173 133469 37 10 44 9
4 2 87248 30499316 24260 19762992 0 0 1584 180 41851 123900 35 10 43 12
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
5 6 87248 30550672 24260 19767944 0 0 5496 196 42767 120424 36 10 39 15
8 4 87248 30606424 24268 19770072 0 0 1992 720 39900 119779 36 9 44 12
42 5 87248 30642356 24268 19774300 0 0 4944 84 52077 127494 39 10 39 12
20 14 87248 30701248 24288 19783900 0 0 8708 132 45299 121855 36 10 36 17
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15 1 87248 30798712 24304 19807164 0 0 18552 104 71438 133030 39 12 34 15
22 5 87248 30859540 24316 19812192 0 0 2928 740 50317 126129 42 12 32 14
11 4 87248 30938500 24316 19811028 0 0 1200 376 48530 134085 44 12 35 8
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13 0 87248 31273272 24324 19819648 0 0 1048 528 42817 116083 36 11 45 8
9 3 87248 31326612 24324 19827172 0 0 1116 672 41170 126868 37 11 43 9
5 3 87248 31377948 24324 19831156 0 0 1464 268 40480 117738 37 11 45 8
5 6 87248 31444120 24332 19835432 0 0 556 600 40487 117339 35 10 43 12
10 6 87248 31525964 24336 19833684 0 0 1200 548 40910 122021 34 11 42 13
8 4 87248 31603260 24336 19834136 0 0 5272 76 39743 117681 35 10 43 12
7 6 87248 31669868 24336 19841208 0 0 5480 1160 40320 115701 35 10 44 11
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5 8 87248 31814176 24344 19848404 0 0 3048 216 42336 126214 37 11 37 15
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5 5 87248 32352020 24360 19879732 0 0 2376 240 47504 133668 36 12 39 14
9 7 87248 32435680 24368 19879560 0 0 2352 825 42783 128196 36 10 38 15
6 4 87248 32508428 24376 19881172 0 0 1372 1276 42448 130494 35 11 40 14
6 3 87248 32581884 24376 19882352 0 0 2236 284 41906 131945 35 11 41 13
5 6 87248 32648220 24376 19886532 0 0 3660 424 45369 133493 34 11 44 11
6 6 87248 32691356 24376 19897580 0 0 9020 28 57528 134137 41 12 35 12
3 2 87248 32762636 24376 19898820 0 0 2212 748 43951 125014 37 11 43 9
8 2 87248 32839444 24384 19898212 0 0 3188 336 42040 116295 36 10 44 10
8 4 87248 32893408 24392 19905776 0 0 5000 1020 42713 117675 37 11 39 13
8 3 87248 32959468 24392 19909924 0 0 4808 464 40496 120912 36 11 43 11
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
9 3 87248 33021460 24400 19916192 0 0 4700 652 40428 116946 38 11 40 11
3 2 87248 33072900 24404 19923628 0 0 7644 196 48052 115586 38 11 43 8
7 2 87248 33140440 24404 19931588 0 0 5356 96 39469 116147 34 10 49 7
4 3 87248 33200872 24412 19939700 0 0 4400 348 39829 120335 35 10 48 7
13 2 87248 33273676 24412 19943864 0 0 4044 380 41043 115846 35 10 49 6
6 4 87248 33328832 24412 19948968 0 0 4512 932 41846 128826 38 12 42 9
4 3 87248 33378536 24412 19950156 0 0 1004 712 42133 117468 36 11 45 8
4 3 87248 33425752 24412 19955968 0 0 3092 384 39808 117656 35 10 46 9
4 3 87248 33483840 24420 19959412 0 0 4064 176 41219 122125 37 10 45 8
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6 5 87248 33586312 24424 19966556 0 0 3880 148 42337 121177 36 10 43 11
5 2 87248 33669220 24428 19965944 0 0 2948 2248 39083 112442 36 10 46 8
4 3 87248 33705876 24444 19979852 0 0 13696 196 46181 111348 37 11 44 8
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6 3 87248 33815644 24480 20002684 0 0 5616 332 41108 118732 36 10 43 11
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5 4 87248 33748060 24512 20044716 0 0 9772 40 52251 118004 43 11 36 9
4 4 87248 33763732 24512 20060720 0 0 5016 872 44856 123296 42 11 37 10
4 6 87248 33833240 24532 20065204 0 0 3288 56516 40325 120099 35 10 40 15
5 4 87248 33907116 24544 20066384 0 0 1816 368 38690 118991 35 10 45 11
10 5 87248 33976160 24544 20070236 0 0 2704 548 39602 118055 35 10 44 11
2 6 87248 34043440 24552 20075752 0 0 2248 3896 40815 116932 33 9 47 11
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5 7 87248 34107440 24632 20155604 0 0 3656 40624 47611 125019 39 12 40 9
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24 5 87248 34212716 24652 20162044 0 0 3344 348 42443 114332 43 11 33 13
20 6 87248 34241964 24652 20170284 0 0 3632 432 48159 113801 40 11 36 13
11 4 87248 34271288 24676 20180184 0 0 4620 416 45695 121799 38 11 40 11
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15 5 87248 34311132 24728 20213576 0 0 3336 1568 43510 113288 41 12 35 12
11 4 87248 34347196 24732 20212800 0 0 3120 268 43441 120367 39 10 42 8
16 2 87248 34386196 24752 20227400 0 0 5784 176 53580 144354 43 13 33 11
14 5 87248 34388792 24764 20238312 0 0 6768 688 69777 134623 45 13 31 11
9 6 87248 34424292 24780 20254884 0 0 8564 404 49300 126321 40 12 35 13
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
10 4 87248 34481600 24808 20264952 0 0 2572 204 43080 126090 38 12 40 10
17 8 87248 34525332 24808 20276792 0 0 2256 54792 49074 141221 41 12 37 10
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7 4 87248 35297604 24972 20359688 0 0 5416 1280 49767 118239 44 11 36 9
6 4 87248 35344528 24988 20372072 0 0 4692 912 45638 127713 42 11 34 13
6 6 87248 35393740 25008 20380508 0 0 6156 48876 46388 122095 37 11 38 14
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6 6 87248 36055036 25156 20480252 0 0 1156 4360 43085 125702 37 10 36 18
5 6 87248 36104728 25168 20484528 0 0 2252 6860 40706 117682 38 9 36 17
4 9 87248 36168328 25168 20483916 0 0 3078 868 40402 121882 36 10 36 18
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
4 9 87248 36219680 25168 20488204 0 0 1595 104 41705 129796 37 11 34 18
13 4 87248 36292484 25180 20488080 0 0 2752 412 45302 124818 39 10 36 15
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6 11 87248 36436912 25204 20496696 0 0 1496 11136 52959 123602 43 11 30 16
7 6 87248 36501720 25204 20498984 0 0 456 24 42180 115452 39 10 31 21
11 8 87248 36563748 25216 20504684 0 0 1280 3308 42130 111218 38 11 33 18
9 8 87248 36628776 25216 20506636 0 0 1641 1589 42077 118457 40 11 31 19
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6 5 87248 37005116 25240 20526028 0 0 2316 1296 45953 118711 45 11 30 15
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36 10 87248 37134080 25240 20531448 0 0 1476 336 42999 113684 37 10 35 19
21 8 87248 37201428 25248 20533848 0 0 1872 932 50127 120777 40 11 34 16
9 5 87248 37247264 25252 20540080 0 0 1432 4216 47193 122899 40 11 34 16
12 6 87248 37314084 25256 20542472 0 0 2032 880 40609 124628 36 11 37 16
12 6 87248 37356028 25260 20545892 0 0 2072 2200 59409 128859 48 11 26 15
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10 7 87248 37481900 25272 20556252 0 0 2540 1220 48004 120603 39 11 34 16
22 7 87248 37519916 25272 20562460 0 0 2284 3880 66363 135092 42 13 32 13
7 7 87248 37576172 25272 20565984 0 0 2548 640 48017 133883 40 12 32 16
9 9 87248 37633516 25276 20568604 0 0 2088 1600 55344 143714 43 12 31 13
14 2 87248 37701888 25284 20566616 0 0 792 1156 42979 137288 38 12 36 14
6 5 87248 37777036 25288 20564452 0 0 1220 472 48296 137604 39 11 39 11
12 11 87248 37835848 25288 20565848 0 0 1104 3336 44467 124183 36 12 39 13
10 2 87248 37880800 25288 20567964 0 0 1644 1528 63697 137623 42 12 35 12
9 4 87248 37944400 25288 20569760 0 0 1420 1300 44329 122126 41 11 37 12
5 9 87248 37963064 25300 20572608 0 0 1880 2212 49202 132990 42 12 32 14
5 6 87248 38031052 25300 20570864 0 0 1304 340 39548 114171 35 10 38 17
11 6 87248 38067412 25312 20575060 0 0 1544 3204 51555 127361 42 11 31 15
23 1 87248 38133556 25316 20577652 0 0 1848 1100 56166 133666 40 11 36 13
4 4 87248 38159904 25316 20587064 0 0 4844 803 58384 114723 38 11 35 15
9 8 87248 38222892 25324 20588696 0 0 2308 5036 45226 120082 37 11 39 14
10 5 87248 38270776 25328 20594216 0 0 1884 4384 45560 130228 40 11 35 13
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
6 8 87248 38311768 25332 20598384 0 0 3668 536 52548 132272 41 12 33 15
5 9 87248 38359136 25332 20602264 0 0 2552 1368 56585 130113 38 11 33 18
5 7 87248 38414696 25344 20612440 0 0 2640 4648 40067 113687 37 10 35 18
9 4 87248 38482348 25348 20611524 0 0 2268 1096 42990 131398 41 11 34 14
5 10 87248 38537068 25348 20618820 0 0 3596 468 42747 122459 37 10 36 17
7 8 87248 38595844 25348 20621532 0 0 3196 388 46486 125011 38 10 35 16
6 5 87248 38638192 25356 20626164 0 0 2832 4168 54256 134904 41 12 32 14
8 6 87248 38693448 25356 20626996 0 0 1120 344 55656 130351 39 11 36 14
6 9 87248 38758096 25356 20629788 0 0 2100 1436 42231 115324 36 10 38 17
4 6 87248 38814308 25356 20632280 0 0 3204 872 43682 122861 38 11 38 13
7 7 87248 38852708 25356 20638556 0 0 4180 508 50505 122233 41 11 32 16
6 9 87248 38894808 25376 20646088 0 0 2388 1916 51683 125098 41 11 33 15
6 3 87248 38950472 25376 20647748 0 0 2496 136 39691 117498 37 10 32 21
5 10 87248 38967744 25384 20661316 0 0 4208 1288 54378 141667 44 12 28 16
5 7 87248 39009616 25392 20667560 0 0 4076 428 45661 119617 38 10 35 18
8 6 87248 39058372 25408 20672400 0 0 2908 1000 46594 125505 40 11 34 16
5 8 87248 39087516 25424 20681612 0 0 7208 2800 41925 120641 38 10 36 16
8 15 87248 39114752 25432 20688892 0 0 3508 520 42218 121241 37 10 36 17
6 6 87248 39098356 25432 20692668 0 0 6420 387 54194 123762 45 11 27 17
7 6 87248 39115636 25448 20699376 0 0 5736 2616 52816 122977 41 10 31 18
6 8 87248 39052340 25456 20742096 0 0 10044 484 61779 124501 44 11 30 15
7 8 87248 39076524 25480 20758728 0 0 4212 43088 54166 124758 42 11 31 15
7 6 87248 39076884 25484 20763272 0 0 1696 3212 52338 115092 41 10 36 12
11 6 87248 39064664 25492 20787372 0 0 4084 6480 79681 123722 45 12 32 10
6 6 87248 39009136 25496 20826004 0 0 7324 868 58561 129155 44 12 29 15
3 8 87248 39039364 25500 20838304 0 0 3288 420 51683 124084 39 10 32 19
7 9 87248 39078768 25512 20851728 0 0 5004 372 44765 113745 35 9 38 18
9 7 87248 39104420 25512 20866720 0 0 4892 1380 60639 119313 38 11 35 16
4 9 87248 39139244 25532 20872516 0 0 2144 64843 52557 121577 37 11 35 17
4 7 87248 39200112 25544 20872984 0 0 128 69072 47183 117838 34 10 35 21
4 7 87248 39267336 25548 20873852 0 0 16 10572 44438 113108 32 10 49 10
6 9 87248 39322920 25560 20877988 0 0 236 224 60240 125845 37 10 30 23
^Z
[2]+ Stopped vmstat 1
 
You are using about 100% more cpu than before. Columns us (Userland CPU) and sy (System CPU aka kernel) These are percentages
You are now seeing some IO Wait, where before you were not. wa column, percentage

Looks like disk IO is flowing better now, thats the columns bi (Blocks Input aka Read) and bo (Blocks Output aka write)
Your cache is much larger, free ram is lower (because more is being used as a cache)

My suggestion to you is to try changing one thing at a time until you get the best performance for your particular workload.
Try writeback, then writethorough, if one of those work better for you, use them. My experience is that no cache performs best even with just plain old SATA disks, but every workload is different....

Reduce the vm.dirty_background_bytes/ratio
It would likely be best to use vm.dirty_background_bytes since ratio can only go down to 1% and 1% of 128GB is huge.
If this was my system I would start with vm.dirty_background_bytes = 536870912
Keep cutting that number in half and measuring performance, pick the number that works best for you.

This thread might help you reduce some context switching (cs column in vmstat output)
http://forum.proxmox.com/threads/14193-Higher-CPU-Load-on-WinXP-KVM-since-update-to-Proxmox-3
 
You are using about 100% more cpu than before. Columns us (Userland CPU) and sy (System CPU aka kernel) These are percentages
You are now seeing some IO Wait, where before you were not. wa column, percentage

Looks like disk IO is flowing better now, thats the columns bi (Blocks Input aka Read) and bo (Blocks Output aka write)
Your cache is much larger, free ram is lower (because more is being used as a cache)

My suggestion to you is to try changing one thing at a time until you get the best performance for your particular workload.
Try writeback, then writethorough, if one of those work better for you, use them. My experience is that no cache performs best even with just plain old SATA disks, but every workload is different....

Reduce the vm.dirty_background_bytes/ratio
It would likely be best to use vm.dirty_background_bytes since ratio can only go down to 1% and 1% of 128GB is huge.
If this was my system I would start with vm.dirty_background_bytes = 536870912
Keep cutting that number in half and measuring performance, pick the number that works best for you.

This thread might help you reduce some context switching (cs column in vmstat output)
http://forum.proxmox.com/threads/14193-Higher-CPU-Load-on-WinXP-KVM-since-update-to-Proxmox-3

okay thanks alot brother :)
 

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