High CPU usage after upgrading to 2.7.1 Community Edition in XenServer
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@DrydenK-0 I cant give you good arguments. Odd things happen when memory and disk is low/small. Try it.
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I tried reinstalling the VM from scratch and then reloading it with my setup. The result is still the same high load.
Since it was just a reload away, I tried increasing memory to 4GB (I had already used 10gb for disk). Still, no change as seen below.
Also, to isolate if it's something in my setup, I did a new install and checked top before setting anything. With pfSense still on the initial setup web page, I went to the command line and ran 'top -HaSP'. Even with nothing set, the result was still the same with a very high interrupt load.
Since no one else seems to be seeing this, my conclusion is that it may be something related to virtualization in Citrix-Xen.
top -HaSPb
last pid: 98295; load averages: 0.33, 0.17, 0.07 up 0+00:01:50 11:24:26
310 threads: 5 running, 278 sleeping, 27 waiting
CPU 0: 7.9% user, 0.1% nice, 0.0% system, 47.3% interrupt, 44.7% idle
CPU 1: 9.2% user, 0.0% nice, 0.0% system, 37.3% interrupt, 53.5% idle
CPU 2: 8.0% user, 0.0% nice, 0.0% system, 44.1% interrupt, 47.9% idle
CPU 3: 10.4% user, 0.0% nice, 0.0% system, 38.5% interrupt, 51.1% idle
Mem: 114M Active, 84M Inact, 236M Wired, 3478M Free
ARC: 109M Total, 20M MFU, 85M MRU, 158K Anon, 593K Header, 3260K Other
86M Compressed, 190M Uncompressed, 2.22:1 Ratio
Swap: 1024M Total, 1024M FreePID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
11 root 187 ki31 0B 64K CPU1 1 1:48 100.00% [idle{idle: cpu1}]
11 root 187 ki31 0B 64K CPU0 0 1:49 98.97% [idle{idle: cpu0}]
11 root 187 ki31 0B 64K RUN 3 1:45 98.97% [idle{idle: cpu3}]
11 root 187 ki31 0B 64K CPU2 2 1:36 98.97% [idle{idle: cpu2}]
0 root -16 - 0B 1536K swapin 3 0:44 0.00% [kernel{swapper}] -
@DrydenK-0 said in High CPU usage after upgrading to 2.7.1 Community Edition:
it may be something related to virtualization in Citrix-Xen.
Yes that seems likely. Do you see this on a clean install of a new VM with something close to the default config?
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VERY default. As I said, i went to the console with pfSense still in the initial setup page, so no setting made at all.
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S stephenw10 moved this topic from General pfSense Questions on
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We can also confirm that we are observing the same behavior after the upgrade to 2.7.1.
Running XenServer as well (8.2.1)
top -HaSPb
last pid: 23570; load averages: 0.24, 0.25, 0.17 up 0+13:10:50 00:03:38
239 threads: 5 running, 187 sleeping, 47 waiting
CPU 0: 0.1% user, 0.1% nice, 0.0% system, 17.9% interrupt, 81.9% idle
CPU 1: 0.1% user, 0.1% nice, 0.0% system, 12.6% interrupt, 87.3% idle
CPU 2: 0.1% user, 0.1% nice, 0.0% system, 13.3% interrupt, 86.5% idle
CPU 3: 0.1% user, 0.1% nice, 0.0% system, 13.4% interrupt, 86.4% idle
Mem: 94M Active, 220M Inact, 315M Wired, 124M Buf, 5284M Free
Swap: 1024M Total, 1024M FreeWe can confirm that the interrupts are not showing up on the host server. The high interrupt is only reflected in the VM.
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But you do see CPU usage like OP shows in the first post?
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What do you see causing the interrupt load in
vmstat -i? -
]/root: vmstat -i interrupt total rate irq1: atkbd0 2 0 irq15: ata1 111765 1 irq23: uhci0 16 0 cpu0:xen 10385530 61 cpu1:xen 8100717 48 cpu2:xen 7320906 43 cpu3:xen 7430090 44 irq2096: cpu0:r 1031 0 irq2097: cpu0:itlb 236290 1 irq2098: cpu0:b 4252302 25 irq2102: cpu1:r 1309 0 irq2103: cpu1:itlb 235826 1 irq2104: cpu1:b 4563379 27 irq2108: cpu2:r 373 0 irq2109: cpu2:itlb 234740 1 irq2110: cpu2:b 4808132 28 irq2114: cpu3:r 224 0 irq2115: cpu3:itlb 235961 1 irq2116: cpu3:b 4736445 28 irq2120: xen_et0:c0 2678328 16 irq2121: xen_et0:c1 1831505 11 irq2122: xen_et0:c2 1881594 11 irq2123: xen_et0:c3 1869526 11 irq2124: xenstore0 824 0 irq2129: xbd0 2762175 16 irq2130: xn0 507745 3 irq2131: xn0 609115 4 irq2132: xn0 418078 2 irq2133: xn0 1492607 9 Total 66706535 392 -
Hmm, nothing that would normally worry me....
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This is vmstat -i for us:
vmstat -i
interrupt total rate irq1: atkbd0 2 0 irq15: ata1 73032 1 irq23: uhci0 16 0 cpu0:xen 38060450 345 cpu1:xen 39683377 359 cpu2:xen 35947584 325 cpu3:xen 35061579 317 irq2096: cpu0:r 1627 0 irq2097: cpu0:itlb 379625 3 irq2098: cpu0:b 12717262 115 irq2102: cpu1:r 2726 0 irq2103: cpu1:itlb 375826 3 irq2104: cpu1:b 12093642 109 irq2108: cpu2:r 1270 0 irq2109: cpu2:itlb 373779 3 irq2110: cpu2:b 13025219 118 irq2114: cpu3:r 1244 0 irq2115: cpu3:itlb 373885 3 irq2116: cpu3:b 12454464 113 irq2120: xen_et0:c0 1486542 13 irq2121: xen_et0:c1 1224535 11 irq2122: xen_et0:c2 1217963 11 irq2123: xen_et0:c3 1213515 11 irq2124: xenstore0 20877 0 irq2129: xbd0 83349 1 irq2130: xn0 11538967 104 irq2131: xn0 8785273 80 irq2132: xn0 13063677 118 irq2133: xn0 16360612 148 irq2134: xn1 8424918 76 irq2135: xn1 7869522 71 irq2136: xn1 6623171 60 irq2137: xn1 7929750 72 irq2138: xn2 1668062 15 irq2139: xn2 1563326 14 irq2140: xn2 1591044 14 irq2141: xn2 1444504 13 irq2142: xn3 1827567 17 irq2143: xn3 2453480 22 irq2144: xn3 29 0 irq2145: xn3 232 0 irq2146: xn4 579364 5 irq2147: xn4 794470 7 irq2148: xn4 514168 5 irq2149: xn4 970528 9 irq2150: xn5 57959 1 irq2151: xn5 53901 0 irq2152: xn5 61069 1 irq2153: xn5 151422 1 Total 300200405 2718 -
There is already a discussion on this topic here https://forum.netgate.com/topic/184245/high-interrupt-cpu-usage-in-v2-7-1/7
After upgrading to 2.7.2 nothing has changed. The problem only appears on Xen, on ESXi everything is fine. -
@sknigen said in High CPU usage after upgrading to 2.7.1 Community Edition in XenServer:
https://forum.netgate.com/topic/184245/high-interrupt-cpu-usage-in-v2-7-1/7
Ah, better to use that thread going forward then.
