Very slow internet browsing



  • A few days ago Released Version 2.1.1
    Then came version 2.1.2

    I just upgraded from version 2.1 to version 2.1.1
    And then to version 2.1.2

    All updated and working
    But the internet works very, very slowly

    Surfing the Internet
    And watch sites of direct streaming
    Was faster

    Now web pages takes a long time to load
    And Web pages of the Instant Watch even more



  • I just upgraded from 2.1.1 to 2.1.2 and something is not right.

    Certain sites just take forever to load or never load.  Sites like google and facebook.  Or the site will load but the images wont.  My connection to comcast is IPV6 using dualstack.  I noticed my IPv4 connection latency after the upgrade was varing wildly between 10ms and 250ms (no packet loss though) and the IPv6 latency was rock solid at 10ms.  So I rebooted the cable modem and pfsense.  Now the IPv4 is rock solid but the IPv6 is the one that varies.  Something is amiss.



  • I noticed my IPv4 connection latency after the upgrade was varing wildly between 10ms and 250ms (no packet loss though

    Same here

    i use only IPv4
    The temperature of the CPU is also higher than normal



  • Yep.  Same thing is happening to me.  Noticed high CPU usage on my graphs.  Also using Comcast so something going on?



  • Looking at the graphs I noticed the number of process been fluctuating way too much.  Going to take a look at the process list and see what is up.



  • I've been having issues as well for a couple days now which roughly coincides with my update. Speedtests have been showing results of 5/.5

    I had thought it might be a service issue with my cable service since the TV has been looking fuzzy for a couple days too but I ruled that out when I hooked up my MacBook directly to my modem and speedtests results were in the 175/10 range (big difference).

    I've seen some significantly high latencies pinging as well, some upwards of 300ms, some as low as 10-15ms though too.

    I've been looking through syslog and snmp messages for the last little bit that were picked up in my RMM application and can't see anything that jumps out. I'm also running it in a VMware appliance though so I don't know if there's something going on there?

    Tried doing a factory reset and restoring configuration, my next step may be to do a clean install since I'm not seeing anything that jumps out and screams problem



  • I also noticed that my firewall is doing horrible sync time.  Notice the very high jitter and high offset.  Considering two of my peers are local with sub ms latency I should not have that high of jitter or offset.

    Active Peer 	192.168.10.12 	.PPS. 	1 	u 	42 	64 	1 	0.402 	118.013 	51.463
    Unreach/Pending 	192.168.10.81 	192.168.10.12 	2 	u 	39 	64 	1 	0.359 	111.357 	58.965
    Unreach/Pending 	64.246.132.14 	.CDMA. 	1 	u 	44 	64 	1 	23.731 	142.941 	41.969
    Candidate 	173.208.234.242 	162.243.243.206 	3 	u 	39 	64 	1 	49.341 	93.829 	63.659
    Candidate 	64.113.44.57 	64.113.32.5 	2 	u 	40 	64 	1 	51.656 	78.572 	87.198 
    

    Note this is what you should see, this is my SAN server that syncs to similiar peers.

    -192.168.10.81   192.168.10.12    2 u   53   64  377    0.246   16.430   5.863
    *192.168.10.12   .PPS.            1 u    3   16  377    0.459   -0.011   0.019
    +137.190.2.4     .GPS.            1 u   66   64  377   71.384    0.826   0.379
    +198.74.59.249   173.70.50.12     2 u   32   64  377   18.794    1.985   2.108
    -199.7.177.206   43.77.130.254    2 u   28   64  377   44.659   -5.374   0.430
    -204.2.134.164   241.199.164.101  2 u    8  256  377   84.106    1.321   2.491
    

  • Banned

    Dude, this thread is about "slow internet browsing", so unless you "browse" internet via NTP, create your own thread.



  • I too didn't see anything in the logs that would explain the high latencies.  Tried a few things such as going through some options and clicking on save to see if anything would pop up an error to indicate a configuration conflict.

    After 3 reboots it finally became stable and latency issue went away.  It's not as low as it was before but certainly alot better than it was.

    I checked my work firewall that we use for the wireless connections and it didn't show the same behavior.  Then again that firewall is basic without any of the extra packages installed.

    Maybe one or more of the packages are conflicting?  I even tried re-installing all the packages.

    Right now it's working ok.  So I don't know if just a fluke with the timing of the upgrade and maybe Comcast issues?



  • @doktornotor:

    Dude, this thread is about "slow internet browsing", so unless you "browse" internet via NTP, create your own thread.

    Whoa ease up. 1 I have already posted to this thread about my issues. 2. My ntp info is to help point to what may be the issue. Ntp issue like this are normally due to the ntp process not getting enough cpu time.



  • The issues I was experiencing this morning and last night was probably caused by Comcast.  Going through the graphs with a fine comb the issues didn't start until at around 8pm last night and finally got resolved at around 3pm today.  Right after the update Thursday night the graphs showed normal activity until last night.  Now the graphs have returned to normal.

    So I don't think PfSense upgrade had anything to do with this, least in my case.

    Just bad timing.



  • Good Morning {in my area}

    Now Morning
    And out of 10 computers are connected and surf them {brothers sisters parents}
    Only my computer works now
    And the graph shows a lot of connections

    browser Open with two tabs
    One of the dashboard
    Second of this page with the message

    I guess there is a log in which all registered
    Where can I see it.



  • Addition
    Now I checked the Internet link with Mlab Shaperprobe

    http://www.measurementlab.net/tools/shaperprobe

    Although the dashboard
    Says there are no packet loss
    The test stops in the middle
    And gives a message

    "measurement aborted due High packet loss rate"



  • I have narrowed my issues down to just IPv6 I believe.

    My IPv4 gateway appears to keep a solid connection with a ~10ms latency, however my IPv6 gateway varies from 10ms - 250ms.  Any ideas what could have caused this issue with the most recent patch?

    Prior to the patch I did not have this issue.


  • Netgate Administrator

    Another user reported similar symptoms when using Intel NICs and some tweaks applied. Are any of you running similar setups?

    Steve



  • I do not know what network cards I have
    But I know that I did not changed their settings

    Is there a command that
    Show me the computer's hardware



  • @firefox:

    Is there a command that
    Show me the computer's hardware

    pciconf -lv
    

    It won't spell out the nic brand or model, you'll probably need to Google the chip number.

    You can also look at this file to get the driver version, but that won't list the specific nic model:

    /var/log/dmesg.boot
    

  • Netgate Administrator

    Well if you haven't added any tweaks in loader.conf.local (for which you'd have to know what hardware you're running) then this is a different problem. Or at least a different solution.
    You can tell what NICs you have by what drivers are attached to them. Intel NICs will usually use the em or igb drivers so your interfaces will be em0, em1 etc. Beyond that you need the PCI info for more detail but here the drivers are enough.

    Steve



  • pciconf -lv

    give me this

    $ pciconf -lv
    hostb0@pci0:0:0:0: class=0x060000 card=0xffffffff chip=0x25608086 rev=0x01 hdr=0x00
        class      = bridge
        subclass  = HOST-PCI
    vgapci0@pci0:0:2:0: class=0x030000 card=0x02671014 chip=0x25628086 rev=0x01 hdr=0x00
        class      = display
        subclass  = VGA
    uhci0@pci0:0:29:0: class=0x0c0300 card=0x02671014 chip=0x24c28086 rev=0x01 hdr=0x00
        class      = serial bus
        subclass  = USB
    uhci1@pci0:0:29:1: class=0x0c0300 card=0x02671014 chip=0x24c48086 rev=0x01 hdr=0x00
        class      = serial bus
        subclass  = USB
    uhci2@pci0:0:29:2: class=0x0c0300 card=0x02671014 chip=0x24c78086 rev=0x01 hdr=0x00
        class      = serial bus
        subclass  = USB
    ehci0@pci0:0:29:7: class=0x0c0320 card=0x02671014 chip=0x24cd8086 rev=0x01 hdr=0x00
        class      = serial bus
        subclass  = USB
    pcib1@pci0:0:30:0: class=0x060400 card=0x00000000 chip=0x244e8086 rev=0x81 hdr=0x01
        class      = bridge
        subclass  = PCI-PCI
    isab0@pci0:0:31:0: class=0x060100 card=0x00000000 chip=0x24c08086 rev=0x01 hdr=0x00
        class      = bridge
        subclass  = PCI-ISA
    atapci0@pci0:0:31:1: class=0x01018a card=0x02671014 chip=0x24cb8086 rev=0x01 hdr=0x00
        class      = mass storage
        subclass  = ATA
    none0@pci0:0:31:3: class=0x0c0500 card=0x02671014 chip=0x24c38086 rev=0x01 hdr=0x00
        class      = serial bus
        subclass  = SMBus
    none1@pci0:0:31:5: class=0x040100 card=0x02671014 chip=0x24c58086 rev=0x01 hdr=0x00
        class      = multimedia
        subclass  = audio
    fxp0@pci0:2:8:0: class=0x020000 card=0x02671014 chip=0x10398086 rev=0x81 hdr=0x00
        class      = network
        subclass  = ethernet
    ath0@pci0:2:9:0: class=0x020000 card=0x2051168c chip=0x0013168c rev=0x01 hdr=0x00
        class      = network
        subclass  = ethernet
    dc0@pci0:2:10:0: class=0x020000 card=0x434e4554 chip=0x91021282 rev=0x31 hdr=0x00
        class      = network
        subclass  = ethernet
    fxp1@pci0:2:12:0: class=0x020000 card=0x000c8086 chip=0x12298086 rev=0x08 hdr=0x00
        class      = network
        subclass  = ethernet



  • Possibly not 100% correct, but the nics might be these:

    ath0 - Atheros Communications Inc. - AR5212, AR5213 802.11a/b/g Wireless Adapter
    or 
    ath0 - Atheros Communications Inc. - 802.11a/b/g Wireless Adapter (AR2312)
    
    dco - Davicom Semiconductor Inc. - 10/100 Mbps Fast Ethernet Controller (DM9102/A/AF)
    
    fxp0 - Intel Corporation - 82801DB PRO/100 VE (LOM) Ethernet Controller
    
    fxp1 - Intel Corporation - 82550/1/7/8/9 EtherExpress PRO/100(B) Ethernet Adapter
    


  • Is there a way to know if Intel cards have a problem with pfsense

    With the latest version Anyhow


  • Netgate Administrator

    Just to clarify this, there is not any known bug in the Intel driver or card setup (that I know about at least). I mentioned this only because the symptoms described were very similar to those I had been reading about in another thread.

    https://forum.pfsense.org/index.php?topic=74942.0

    In that instance the high latency was seemingly solved by removing the loader.conf.local setting limiting igb to 1 queue.

    Steve



  • I know I understood it the first time
    My questions were just to rule out a network card problem

    What could it be
    why is the  latency go crazy
    from 10 to 300
    why all internet browsing so slow
    Except from the upgrades i did not changed anything


  • Netgate Administrator

    OK. I just wanted to be sure I hadn't mislead anyone.
    Your interfaces all appear to be older cards, 2 fxp NICs and one dc. Are you seeing latency problems across all of them?
    The driver changes I was talking about were for the newer Intel drivers (em. igb, ixgb) for gigabit NICs and they went into 2.1.1. I don't beleive there were any driver changes between 2.1.1 and 2.1.2.

    @firefox:

    The temperature of the CPU is also higher than normal

    This would indicate that the CPU is working hard on something which could be causing the latency. What do you see if you run 'top -SH'?

    Steve



  • top -SH
    

    here

    $ top -SH
    last pid: 62178;  load averages:  0.07,  0.14,  0.10  up 8+11:39:44    19:01:24
    269 processes: 3 running, 248 sleeping, 18 waiting
    
    Mem: 463M Active, 52M Inact, 143M Wired, 16M Cache, 84M Buf, 50M Free
    Swap: 2048M Total, 49M Used, 1999M Free, 2% Inuse
    
      PID USERNAME      PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
       11 root          171 ki31     0K     8K RUN    166.9H 96.39% idle
    80016 root           44    0 58740K 13392K piperd   0:06  0.39% php
       12 root          -68    -     0K   144K WAIT   132:21  0.00% intr{irq20: fxp0 fxp1}
        0 root          -68    0     0K    88K -      109:12  0.00% kernel{ath0 taskq}
       12 root          -32    -     0K   144K WAIT    96:06  0.00% intr{swi4: clock}
        0 root          -68    0     0K    88K -       40:43  0.00% kernel{dummynet}
    79394 root           44    0   262M   230M select  17:08  0.00% clamd{clamd}
    56758 root           44    0  8004K  4616K kqread   8:06  0.00% lighttpd
       12 root          -44    -     0K   144K WAIT     7:06  0.00% intr{swi1: netisr 0}
      257 root           76   20  3352K     0K kqread   6:50  0.00% <check_reload_stat>
       14 root          -16    -     0K     8K -        5:03  0.00% yarrow
     9389 proxy          44    0 43124K 36700K kqread   3:57  0.00% squid
    23208 root           64   20  3264K  1104K select   3:43  0.00% apinger
       22 root           20    -     0K     8K syncer   3:42  0.00% syncer
    75378 root           44    0  3264K   804K piperd   3:24  0.00% logger
       12 root          -68    -     0K   144K WAIT     2:48  0.00% intr{irq22: dc0}
    68925 root           44    0  3416K  1144K select   2:35  0.00% syslogd
        0 root          -68    0     0K    88K -        2:33  0.00% kernel{ath0 taskq}</check_reload_stat>
    

    Currently the temperature is about 53 ° C
    and latency 18
    It reached 56 ° C

    Before the upgrade it was from 30 to 36 maybe 40 in an exceptional case
    And the latency Was up to 30 maximum


  • Netgate Administrator

    If you run it from the console you will see the line detailing how the usage breaks down, like this:

    [2.1.2-RELEASE][root@pfsense.fire.box]/root(1): top -SH
    
    last pid: 99751;  load averages:  0.02,  0.02,  0.00    up 2+08:39:49  01:57:30
    107 processes: 3 running, 88 sleeping, 16 waiting
    CPU:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
    Mem: 61M Active, 47M Inact, 103M Wired, 1248K Cache, 59M Buf, 269M Free
    Swap: 
    
      PID USERNAME PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
       10 root     171 ki31     0K     8K RUN     55.1H 100.00% idle
       11 root     -32    -     0K   128K WAIT     8:00  0.00% intr{swi4: clock}
      286 root      76   20  3352K  1192K kqread   6:55  0.00% check_reload_status
       11 root     -68    -     0K   128K WAIT     5:46  0.00% intr{irq18: em0 ath0
       11 root     -68    -     0K   128K WAIT     4:54  0.00% intr{irq17: fxp2 fxp
    

    You have more than twice the processes I do, though I'm not running many packages on the above box.

    A couple of things that have caused similar symptoms in the past come to mind. If you have any sort of CPU frequency scaling enabled and it's not quick enough responding to the load it cam start to appear like a large load. Doesn't really explain why it's running hot though.
    The other thing is ASPM which can cause problems similar to this. Not sure if that's PCIe only though. Worth checking if it's an option in your BIOS and disabling it if it's there.

    Steve



  • @ESPNSTI:

    pciconf -lv
    

    It won't spell out the nic brand or model, you'll probably need to Google the chip number.

    I always add the file that pciconf can use to translate device ids to descriptive device names on all my pfsense installs so that the list is much easier to read.  I really wish pfsense would include that file by default.  It is very useful but it is about 400 KBytes.

    /usr/share/misc/pci_vendors

    I just do a search for that file for whatever version of freebsd pfsense is running and manually put it in place.  pciconf is so much easier to read after that.

    This…

    
    em2@pci0:4:0:0:	class=0x020000 card=0x060a15d9 chip=0x10d38086 rev=0x00 hdr=0x00
        class      = network
        subclass   = ethernet
    
    

    becomes this…

    
    em2@pci0:4:0:0:	class=0x020000 card=0x060a15d9 chip=0x10d38086 rev=0x00 hdr=0x00
        vendor     = 'Intel Corporation'
        device     = 'Intel 82574L Gigabit Ethernet Controller (82574L)'
        class      = network
        subclass   = ethernet
    
    


  • The other thing is ASPM which can cause problems similar to this

    I do not have this Option
    I checked

    now the latency in 325
    Heat 50 °

    Could be something on the network makes this
    Perhaps improper connection of the network jack
    Or improper cable

    Do not know what to check


  • Netgate Administrator

    If it were a hardware problem I would expect to see a load of errors in Ststus: Interfaces:

    You aren't seeing a high interrupt load then if you run 'top -SH' at the console (or via ssh)?

    Steve



  • What came out of this command
    I posted earlier post


  • Netgate Administrator

    If you look at my output from top -SH above I have an extra line the breaks down the usage by type. If you run it fro the console, rather then via the webgui, and allow it to go a few cycles you'll see that. It probably doesn't contain anything useful but at this point it's worth checking anything.  :)

    Steve



  • Here is the output of a command through ssh
    But for some reason been a day and a half that it works well
    Besides high CPU temperature

    *** Welcome to pfSense 2.1.2-RELEASE-pfSense (i386) on home ***
    
     WAN1 (wan)      -> pppoe0     -> v4/PPPoE: 5.144.62.30/32
     LAN (lan)       -> fxp1       -> v4: 192.168.0.1/24
     WIFI (opt1)     -> dc0        -> 0.26,  0.32,  0.18   up 13+00:14:24  07:36:04
     WAN2 (opt2)     -> ath0_wlan0 -> 
          0.0                     0.0           0.0              100
     0) Logout (SSH only)                  8) Shell
     1) Assign Interfaces                  9) pfTop
     2) Set interface(s) IP address       10) Filter Logs
     3) Reset webConfigurator password    11) Restart webConfigurator
     4) Reset to factory defaults         12) pfSense Develope7.98ell
     5) Reboot system                     13) Upgrade from conso25
     6) Halt system                       14) Disable Secure She6l (sshd)
       12ing host       -68    -     0K   144K WAIT   150:39  1.17% intr{irq20: fxp
     9929                45    0   370M   148M bpf      5:14        snort{snort}
                                               -   
     nter an option: 8
    
    72.1.2-RELEASE][admin@home.plex]/root(1): top -SH
    
    last pid: 25296;  load averages:  0.26,  0.32,  0.18   up 13+00:14:23  07:36:03
    188 processes: 2 running, 168 sleeping, 18 waiting
     PU: 23.6% user,  0.0% nice, 16.1% system,  2.2% interrupt, 58.1% idle
     em: 483M Active, 45M Inact, 142M Wired, 18M Cache, 84M Buf, 36M Free
    Swap: 2048M Total, 60M Used, 1988M Free, 2% Inuse
    
      PID USERNAME      PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
       11 root          171 ki31     0K     8K RUN    266.7H 76.07% idle
    72612 root           76    0 57716K 11728K accept   0:04  8.50% php
    65865 root           52    0 58740K 12240K accept   0:16  3.76% php
     9929 root           45    0   370M   148M bpf      5:14  1.27% snort{snort}
       12 root          -68    -     0K   144K WAIT   150:39  1.17% intr{irq20: fxp
        0 root          -68    0     0K    88K scan   167:37  0.00% kernel{ath0 tas
       12 root          -32    -     0K   144K WAIT   140:35  0.00% intr{swi4: cloc
        0 root          -68    0     0K    88K -       57:49  0.00% kernel{dummynet
    79394 root           44    0   265M   239M select  24:03  0.00% clamd{clamd}
    56758 root           44    0  8004K  4852K kqread  14:38  0.00% lighttpd
     9389 proxy          44    0 44148K 36372K kqread  14:19  0.00% squid
       12 root          -44    -     0K   144K WAIT    10:32  0.00% intr{swi1: neti
      257 root           76   20  3352K   708K kqread   9:34  0.00% check_reload_st
       14 root          -16    -     0K     8K -        6:15  0.00% yarrow
       22 root           20    -     0K     8K syncer   6:15  0.00% syncer
    23208 root           64   20  3264K  1136K select   5:47  0.00% apinger
        0 root          -68    0     0K    88K -        3:46  0.00% kernel{ath0 tas
    last pid: 50139;  load averages:  0.42,  0.52,  0.39                                                  up 13+00:26:52  07:48:32
    187 processes: 2 running, 167 sleeping, 18 waiting
    CPU:  6.2% user,  0.0% nice,  1.5% system,  4.6% interrupt, 87.7% idle
    Mem: 436M Active, 60M Inact, 140M Wired, 18M Cache, 84M Buf, 71M Free
    Swap: 2048M Total, 64M Used, 1984M Free, 3% Inuse
    
      PID USERNAME      PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
       11 root          171 ki31     0K     8K RUN    266.9H 79.39% idle
    75084 root           55    0 57716K 12028K accept   0:12  8.40% php
    63656 root           76    0 57716K 11812K accept   0:05  2.49% php
       12 root          -68    -     0K   144K WAIT   150:55  2.10% intr{irq20: fxp0 fxp1}
     9929 root           45    0   370M   149M bpf      5:35  1.86% snort{snort}
        0 root          -68    0     0K    88K -      167:44  0.00% kernel{ath0 taskq}
       12 root          -32    -     0K   144K WAIT   140:41  0.00% intr{swi4: clock}
        0 root          -68    0     0K    88K -       57:52  0.00% kernel{dummynet}
    79394 root           44    0   264M   237M select  24:03  0.00% clamd{clamd}
    56758 root           44    0  8004K  4808K kqread  14:42  0.00% lighttpd
     9389 proxy          44    0 44148K 33280K kqread  14:21  0.00% squid
       12 root          -44    -     0K   144K WAIT    10:33  0.00% intr{swi1: netisr 0}
      257 root           76   20  3352K   708K kqread  10:01  0.00% check_reload_status
       14 root          -16    -     0K     8K -        6:16  0.00% yarrow
       22 root           20    -     0K     8K syncer   6:15  0.00% syncer
    23208 root           64   20  3264K  1136K select   5:47  0.00% apinger
        0 root          -68    0     0K    88K -        3:46  0.00% kernel{ath0 taskq}
    75378 root           44    0  3264K   804K piperd   3:40  0.00% logger
    68925 root           44    0  3416K  1160K select   3:07  0.00% syslogd
       12 root          -68    -     0K   144K WAIT     3:03  0.00% intr{irq21: ath0}
       12 root          -68    -     0K   144K WAIT     2:58  0.00% intr{irq22: dc0}
    60635 nobody         44    0  5512K  1664K select   2:35  0.00% dnsmasq
    90715 root           76   20  3644K   592K wait     2:33  0.00% sh
       13 root          -16    -     0K     8K sleep    2:12  0.00% ng_queue
        3 root           -8    -     0K     8K -        1:48  0.00% g_up
    74905 root           44    0 14060K  9176K bpf      1:40  0.00% tcpdump
        4 root           -8    -     0K     8K -        1:39  0.00% g_down
        8 root          -16    -     0K     8K pftm     1:18  0.00% pfpurge
    48583 root           64   20  7200K  7220K select   1:14  0.00% ntpd{ntpd}
     9935 root           44    0  7876K  1436K select   1:02  0.00% mpd5{mpd5}
       16 root          -16    -     0K     8K tzpoll   0:57  0.00% acpi_thermal
        0 root          -16    0     0K    88K sched    0:50  0.00% kernel{swapper}
       12 root          -64    -     0K   144K WAIT     0:41  0.00% intr{irq14: ata0}
    [2.1.2-RELEASE][admin@home.plex]/root(2): 
    
    

  • Netgate Administrator

    Nothing much there.
    Kind of out of ideas here but I did notice that you are using some swap. That can cause serious performance issues. I wonder if a Snort rule update has pushed you over the limit of RAM and started swapping. Check your memory RRD graph to see if ran out of free memory at any point.

    Steve



  • I will check this with the snort Off
    But i do not think that is the problem
    it worked fine until now includes updates once a month

    Maybe the new version a bit heavy for this computer



  • Hi,

    I have configured Pfsense+Squid 2.3.1-RELEASE-p1 (amd64) for 90 users in our company.
    now problem is pfsense is working fine without squid but when i install and configure squid+squidGuard Transparent then it's given very slow browsing so please tell me the best configuration of squid for 90 users.
    My System configuration is i5 4 core, 8GB RAM, 500GB HDD. Squid configuration below mentioned.

    Cache Replacement Policy–-Heap LFUDA
    Low-Water Mark in %--------85
    High-Water Mark in %-------88
    Enable Offline Mode----------checked
    Hard Disk Cache Size--------102400
    Hard Disk Cache System----ufs
    Level 1 Directories-----------16
    Hard Disk Cache Location---/squid_cache
    Minimum Object Size--------0
    Maximum Object Size    -------20
    Memory Cache Size---------4096
    Maximum Object Size in RAM-256
    Memory Replacement Policy--Heap GDSF

    I's Very Urgent please help