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I have got a old PC I use for recording my band using an USB audio interface into a DAW. It's very important to me that the latency for the input is possibly low. Because of that I tried the low latency kernel - it works wonderful but only for a couple of minutes. After that the OS becomes laggy and unresponsive. Everything works just fine, when I switch to the generic kernel, but then I've got those latencies.. I searched for solutions but I didn't really find anything. I have no idea, what could be wrong.

The version of the low latency kernel is

3.11.0-20-lowlatency


$ uname -a
Linux user-P5VDC-TVM 3.11.0-20-generic #34-Ubuntu 
SMP Tue Apr 1 20:42:16 UTC 2014 i686 i686 i686 GNU/Linux


$ cat /proc/cpuinfo

processor   : 0
vendor_id   : GenuineIntel
cpu family  : 15
model       : 4
model name  : Intel(R) Pentium(R) 4 CPU 3.06GHz
stepping    : 9
microcode   : 0x3
cpu MHz     : 3058.774
cache size  : 1024 KB
physical id : 0
siblings    : 2
core id     : 0
cpu cores   : 1
apicid      : 0
initial apicid  : 0
fdiv_bug    : no
f00f_bug    : no
coma_bug    : no
fpu     : yes
fpu_exception   : yes
cpuid level : 5
wp      : yes
flags       : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pebs bts pni dtes64 monitor ds_cpl tm2 cid cx16 xtpr lahf_lm
bogomips    : 6117.54
clflush size    : 64
cache_alignment : 128
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor   : 1
vendor_id   : GenuineIntel
cpu family  : 15
model       : 4
model name  : Intel(R) Pentium(R) 4 CPU 3.06GHz
stepping    : 9
microcode   : 0x3
cpu MHz     : 3058.774
cache size  : 1024 KB
physical id : 0
siblings    : 2
core id     : 0
cpu cores   : 1
apicid      : 1
initial apicid  : 1
fdiv_bug    : no
f00f_bug    : no
coma_bug    : no
fpu     : yes
fpu_exception   : yes
cpuid level : 5
wp      : yes
flags       : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pebs bts pni dtes64 monitor ds_cpl tm2 cid cx16 xtpr lahf_lm
bogomips    : 6117.54
clflush size    : 64
cache_alignment : 128
address sizes   : 36 bits physical, 48 bits virtual
power management:

Thanks in advance.

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