kali linux runs really very slow and it laggs

**xhacker001** · 2015-06-27

Hello,
I installed Kali linux v 1.1.0a /64bit on my PC (HP Pavilion DV 7 with processor i7 2.20GHz
with 8 cores , and 8 GO RAM, 6 Mo Cache , 1 Terra HDD Toshiba) , but I find a problem that kali runs slowly , for exemple when I execute command it takes secondes to runs in place of runing directly , and it do some lagging , so can you help me please ?
thank you in advance.

**xhacker001** · 2015-06-28

Hello any help plz ?

**xhacker001** · 2015-07-14

Always no resonse ! no reply !

**Crash** · 2015-07-14

Hi man! Plese provide more information.

Whitch one command did you execute?
Did you check the CPU and disk usage?

Try to send someting liker that, to see the responde time:

crash@anubis:/usr/share/sqlmap-dev# time ls
CONTRIBUTING.md extra plugins README.md sqlmapapi.py sqlmap.py thirdparty udf xml
doc lib procs shell sqlmap.conf tamper txt waf

real 0m0.010s
user 0m0.000s
sys 0m0.000s

**xhacker001** · 2015-07-15

Originally Posted by Crash

Hi man! Plese provide more information.

Whitch one command did you execute?
Did you check the CPU and disk usage?

Try to send someting liker that, to see the responde time:

crash@anubis:/usr/share/sqlmap-dev# time ls
CONTRIBUTING.md extra plugins README.md sqlmapapi.py sqlmap.py thirdparty udf xml
doc lib procs shell sqlmap.conf tamper txt waf

real 0m0.010s
user 0m0.000s
sys 0m0.000s

I installed Kali linux v 1.1.0a /64bit on my PC (HP Pavilion DV 7 with processor i7 2.20GHz
with 8 cores , and 8 GO RAM, 6 Mo Cache , 1 Terra HDD Toshiba) in dual boot with Win8
I did "top" command to see if there is some running programs that works with a high pourcent , but I find nothing the max usage of programs with CPU do not exceed the 8% and this is a monitor system screenshot :
Capture du 2015-07-15 16:21:56.jpg
I changed swappiness to 10 ,
there is other informations about CPU etc..:

Code:

root@Pentester:~# uptime
 15:59:10 up 3 min,  2 users,  load average: 1,25, 1,09, 0,48
root@Pentester:~# free -m
             total       used       free     shared    buffers     cached
Mem:          7950       1019       6931          0         47        333
-/+ buffers/cache:        638       7312
Swap:        16277          0      16277
root@Pentester:~# cat /proc/cpuinfo
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz
stepping	: 7
microcode	: 0x29
cpu MHz		: 801.625
cache size	: 6144 KB
physical id	: 0
siblings	: 8
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
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 syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid xsaveopt
bugs		:
bogomips	: 4390.36
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz
stepping	: 7
microcode	: 0x29
cpu MHz		: 841.585
cache size	: 6144 KB
physical id	: 0
siblings	: 8
core id		: 0
cpu cores	: 4
apicid		: 1
initial apicid	: 1
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
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 syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid xsaveopt
bugs		:
bogomips	: 4390.36
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz
stepping	: 7
microcode	: 0x29
cpu MHz		: 803.945
cache size	: 6144 KB
physical id	: 0
siblings	: 8
core id		: 1
cpu cores	: 4
apicid		: 2
initial apicid	: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
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 syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid xsaveopt
bugs		:
bogomips	: 4390.36
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz
stepping	: 7
microcode	: 0x29
cpu MHz		: 830.671
cache size	: 6144 KB
physical id	: 0
siblings	: 8
core id		: 1
cpu cores	: 4
apicid		: 3
initial apicid	: 3
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
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 syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid xsaveopt
bugs		:
bogomips	: 4390.36
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz
stepping	: 7
microcode	: 0x29
cpu MHz		: 799.992
cache size	: 6144 KB
physical id	: 0
siblings	: 8
core id		: 2
cpu cores	: 4
apicid		: 4
initial apicid	: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
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 syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid xsaveopt
bugs		:
bogomips	: 4390.36
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz
stepping	: 7
microcode	: 0x29
cpu MHz		: 800.765
cache size	: 6144 KB
physical id	: 0
siblings	: 8
core id		: 2
cpu cores	: 4
apicid		: 5
initial apicid	: 5
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
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 syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid xsaveopt
bugs		:
bogomips	: 4390.36
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz
stepping	: 7
microcode	: 0x29
cpu MHz		: 870.031
cache size	: 6144 KB
physical id	: 0
siblings	: 8
core id		: 3
cpu cores	: 4
apicid		: 6
initial apicid	: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
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 syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid xsaveopt
bugs		:
bogomips	: 4390.36
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz
stepping	: 7
microcode	: 0x29
cpu MHz		: 825.085
cache size	: 6144 KB
physical id	: 0
siblings	: 8
core id		: 3
cpu cores	: 4
apicid		: 7
initial apicid	: 7
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
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 syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid xsaveopt
bugs		:
bogomips	: 4390.36
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management:

and this is the time commande applied on burpsuite :

Code:

root@Pentester:~# time burpsuite
Deleting temporary files - please wait ... done.

real	0m19.886s
user	0m17.992s
sys	0m0.540s

and for sqlmap:

Code:

time sqlmap
Usage: python sqlmap [options]

sqlmap: error: missing a mandatory option (-d, -u, -l, -m, -r, -g, -c, -x, --wizard, --update, --purge-output or --dependencies), use -h for basic or -hh for advanced help

real	0m4.672s
user	0m1.416s
sys	0m0.168s

thank you for reply

**Crash** · 2015-07-15

Hi man!

So, about the burp does not makes sense because you need to close to burp to get the time, lets check your HD read speed first:

hdparm -I /dev/<device> | grep -i speed

and test the disk withou buffe interference:

hdparm -t --direct /dev/<device><N>

Now the write process
dd if=/dev/zero of=/tmp/wft.dsk bs=8k count=10k
rm -vf /tmp/***.dsk

This way we will know if you have any problem with your disk.

**xhacker001** · 2015-07-17

Originally Posted by Crash

Hi man!

So, about the burp does not makes sense because you need to close to burp to get the time, lets check your HD read speed first:

hdparm -I /dev/<device> | grep -i speed

and test the disk withou buffe interference:

hdparm -t --direct /dev/<device><N>

Now the write process
dd if=/dev/zero of=/tmp/wft.dsk bs=8k count=10k
rm -vf /tmp/***.dsk

This way we will know if you have any problem with your disk.

Concerning the "time" command now i used it for sqlmap:

Code:

root@Pentester:~# time sqlmap
real	0m3.292s
user	0m0.416s
sys	0m0.108s

Concerning hdparm command:

Code:

hdparm -I /dev/sda | grep -i speed
	   *	Gen1 signaling speed (1.5Gb/s)
	   *	Gen2 signaling speed (3.0Gb/s)

I used fdisk -l to show all partitions :

Code:

root@Pentester:~# fdisk -l

Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x000d72d9

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      718847      358400    7  HPFS/NTFS/exFAT
/dev/sda2          718848  1030393855   514837504    7  HPFS/NTFS/exFAT
/dev/sda3      1030395902  1953523711   461563905    5  Extended
Partition 3 does not start on physical sector boundary.
/dev/sda5      1030395904  1920184319   444894208   83  Linux
/dev/sda6      1920186368  1953523711    16668672   82  Linux swap / Solaris

then :

Code:

root@Pentester:~# hdparm -t --direct /dev/sda5

/dev/sda5:
 Timing O_DIRECT disk reads: 270 MB in  3.00 seconds =  89.95 MB/sec

thank you in advance.

**cyberjack** · 2015-07-18

you could temporarily change swappiness value to 0 since you got 8 GB of ram anyway.

To check the swappiness value

cat /proc/sys/vm/swappiness should be 60 by default

To temporarily change swappiness value to 0

sysctl vm.swappiness=0

To make permanent

nano /etc/sysctl.conf

then add (or change) to read vm.swappiness=0

**xhacker001** · 2015-07-19

Originally Posted by cyberjack

you could temporarily change swappiness value to 0 since you got 8 GB of ram anyway.

To check the swappiness value

cat /proc/sys/vm/swappiness should be 60 by default

To temporarily change swappiness value to 0

sysctl vm.swappiness=0

To make permanent

nano /etc/sysctl.conf

then add (or change) to read vm.swappiness=0

I have already 8 GB of RAM SIR that's why I put swappiness to 10

**Crash** · 2015-07-20

Its very weird man!

Did you already try the update?

**xhacker001** · 2015-07-21

Originally Posted by Crash

Its very weird man!

Did you already try the update?

Do you mean update of system or update of swappiness to 0 ?

**Crash** · 2015-07-22

System update.

Maybe is something with drivers.
Sorry for dont be helpful this time.

**xhacker001** · 2015-07-22

Originally Posted by Crash

System update.

Maybe is something with drivers.
Sorry for dont be helpful this time.

No problem sir about this , but yes I did many updates and upgrades and the problem persists ..
As I said I install graphic drivers etc.. but nothing is changed unfortunately ...

**xhacker001** · 2015-08-04

can someone else help me plz ?

**grid** · 2015-10-26

Are you still having lag issues with the latest Kali Linux? I have literally half the machine you do and the latest Kali runs fine.

**dozham** · 2015-11-30

I am facing the same issue as OP's.
Specifically, when I use the GUI for navigation between application (even with ALT+TAB), It sometimes takes more than 1 second for it to accomplish which is a great hassle. It even occurs sometimes when I'm typing in the browser (mostly Chrome or Chromium) address bar, it freezes for a second and then 5 characters appear suddenly at a time.
I monitored the problem for a while and could make it happen on purpose. I opened "htop" and watched the CPU usages. Everything seemed well until I pressed ALT+TAB a bunch of times and the CPU usage of "gnome-shell" rose to 60% from around 6%. When running CPU bound processes this issue becomes a ****** pain.
Would be glad to find and solve it somehow.
My machine is an ASUS N46VB laptop (Core i7 3630QM, 8 GB of RAM, enough disk space) which is far more than enough for Kali 2.0.
Intel graphics driver is installed.

Thanks in advance.

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