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New Member

slow transfer speeds, output errors, and buffers

im trying to track down a network performance issue, because transfers to our as400 are very slow.  IBM says its not an issue on their side because they are seeing resends in the trace file.

 

I did notice some output errors on some of the ports as well as some in the buffers.

 

Could these be what is causing the issue. See below the text from the show buffers command.  Im new to having to modify buffers if this is needed, so some tips/advice on this would be great.

 

DMI_Servers#show buffers
Buffer elements:
     1061 in free list (500 max allowed)
     176407157 hits, 0 misses, 1024 created

Public buffer pools:
Small buffers, 104 bytes (total 50, permanent 50, peak 116 @ 7w0d):
     49 in free list (20 min, 150 max allowed)
     80371005 hits, 22 misses, 66 trims, 66 created
     0 failures (0 no memory)
Middle buffers, 600 bytes (total 25, permanent 25, peak 46 @ 7w0d):
     23 in free list (10 min, 150 max allowed)
     324681 hits, 7 misses, 21 trims, 21 created
     0 failures (0 no memory)
Big buffers, 1536 bytes (total 50, permanent 50, peak 74 @ 7w0d):
     34 in free list (5 min, 150 max allowed)
     69979018 hits, 8 misses, 24 trims, 24 created
     0 failures (0 no memory)
VeryBig buffers, 4520 bytes (total 14, permanent 10, peak 14 @ 7w0d):
     0 in free list (0 min, 100 max allowed)
     58 hits, 2 misses, 0 trims, 4 created
     0 failures (0 no memory)
Large buffers, 5024 bytes (total 0, permanent 0):
     0 in free list (0 min, 10 max allowed)
     0 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
Huge buffers, 18024 bytes (total 0, permanent 0):
     0 in free list (0 min, 4 max allowed)
     0 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)

Interface buffer pools:
Syslog ED Pool buffers, 600 bytes (total 132, permanent 132):
     100 in free list (132 min, 132 max allowed)
     2550 hits, 0 misses
FastEthernet0-Physical buffers, 1524 bytes (total 32, permanent 32):
     8 in free list (0 min, 32 max allowed)
     24 hits, 0 fallbacks
     8 max cache size, 8 in cache
     0 hits in cache, 0 misses in cache
RxQFB buffers, 2040 bytes (total 300, permanent 300):
     291 in free list (0 min, 300 max allowed)
     2862376 hits, 0 misses
RxQ1 buffers, 2040 bytes (total 128, permanent 128):
     1 in free list (0 min, 128 max allowed)
     7525 hits, 58 fallbacks
RxQ2 buffers, 2040 bytes (total 12, permanent 12):
     0 in free list (0 min, 12 max allowed)
     12 hits, 0 fallbacks, 0 trims, 0 created
     0 failures (0 no memory)
RxQ3 buffers, 2040 bytes (total 128, permanent 128):
     7 in free list (0 min, 128 max allowed)
     78728807 hits, 2831206 fallbacks
RxQ4 buffers, 2040 bytes (total 64, permanent 64):
     0 in free list (0 min, 64 max allowed)
     1012501 hits, 1380137 misses
RxQ5 buffers, 2040 bytes (total 0, permanent 0):
     0 in free list (0 min, 0 max allowed)
     0 hits, 0 misses
RxQ6 buffers, 2040 bytes (total 128, permanent 128):
     0 in free list (0 min, 128 max allowed)
     128 hits, 0 misses
RxQ7 buffers, 2040 bytes (total 192, permanent 192):
     63 in free list (0 min, 192 max allowed)
     2772772 hits, 10 misses
RxQ8 buffers, 2040 bytes (total 64, permanent 64):
     0 in free list (0 min, 64 max allowed)
     146504795 hits, 161553754 misses
RxQ9 buffers, 2040 bytes (total 1, permanent 1):
     0 in free list (0 min, 1 max allowed)
     1 hits, 0 misses
RxQ10 buffers, 2040 bytes (total 64, permanent 64):
     1 in free list (0 min, 64 max allowed)
     1781891 hits, 31056 fallbacks
RxQ11 buffers, 2040 bytes (total 16, permanent 16):
     0 in free list (0 min, 16 max allowed)
     16 hits, 0 misses
RxQ12 buffers, 2040 bytes (total 16, permanent 16):
     0 in free list (0 min, 16 max allowed)
     16 hits, 0 misses
RxQ13 buffers, 2040 bytes (total 16, permanent 16):
     0 in free list (0 min, 16 max allowed)
     16 hits, 0 misses
RxQ15 buffers, 2040 bytes (total 4, permanent 4):
     0 in free list (0 min, 4 max allowed)
     403225814 hits, 403225810 misses
IPC buffers, 2048 bytes (total 300, permanent 300):
     296 in free list (150 min, 500 max allowed)
     2699868 hits, 0 fallbacks, 0 trims, 0 created
     0 failures (0 no memory)
Jumbo buffers, 9240 bytes (total 200, permanent 200):
     200 in free list (0 min, 200 max allowed)
     0 hits, 0 misses

Everyone's tags (1)
1 ACCEPTED SOLUTION

Accepted Solutions

I was looking for CRC errors,

I was looking for CRC errors, but I don't see any on any of the interfaces that you posted. The output drops that you're seeing could be due to qos or congestion in general. What are you transferring? FTP? I don't see anything glaringly wrong...

HTH, John *** Please rate all useful posts ***
6 REPLIES

Can you post the results from

Can you post the results from "show inter <port the as400 connects to>"?

 

HTH,

John

HTH, John *** Please rate all useful posts ***
New Member

DMI_Servers#show int gi0

DMI_Servers#show int gi0/2
GigabitEthernet0/2 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is acf2.c569.4a82 (bia acf2.c569.4a82)
  Description: i5
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:00, output hang never
  Last clearing of "show interface" counters 3d02h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 1559000 bits/sec, 226 packets/sec
  5 minute output rate 342000 bits/sec, 157 packets/sec
     73515064 packets input, 42771650286 bytes, 0 no buffer
     Received 8689 broadcasts (3244 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 3244 multicast, 0 pause input
     0 input packets with dribble condition detected
     63901643 packets output, 52562784520 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 PAUSE output
     0 output buffer failures, 0 output buffers swapped out
 

New Member

here is the output from the

here is the ohq numbers from the show int sum.  Gi24 is a trunk to another switch that all the PC's are ran off of.  I see the output errors on that port.

* Vlan1                    0     0    0     0  5000    6 47000    1    0
  FastEthernet0            0     0    0     0     0    0     0    0    0
  GigabitEthernet0/1       0     0    0     0     0    0     0    0    0
* GigabitEthernet0/2       0     0    0     0 1222000  166 196000  117    0
  GigabitEthernet0/3       0     0    0     0     0    0     0    0    0
* GigabitEthernet0/4       0     0    0     0     0    0 48000   25    0
* GigabitEthernet0/5       0     0    0     0  2000    2 13000   13    0
  GigabitEthernet0/6       0     0    0     0     0    0     0    0    0
  GigabitEthernet0/7       0     0    0     0     0    0     0    0    0
* GigabitEthernet0/8       0     0    0     0     0    1  6000    8    0
* GigabitEthernet0/9       0     0    0     0 16000   11 24000   20    0
* GigabitEthernet0/10      0     0    0     0 552000   66 358000   65    0
* GigabitEthernet0/11      0     0    0     0 287000   27 23000   30    0
* GigabitEthernet0/12      0     0    0     0 17000   10 27000   21    0
* GigabitEthernet0/13      0     0    0     0  3000    3 11000   11    0
* GigabitEthernet0/14      0     0    0     0     0    0  5000    7    0
* GigabitEthernet0/15      0     0    0     0     0    0  5000    7    0
* GigabitEthernet0/16      0     0    0     0     0    0  6000    8    0
* GigabitEthernet0/17      0     0    0     0     0    0  5000    7    0
* GigabitEthernet0/18      0     0    0     0     0    0  5000    7    0
* GigabitEthernet0/19      0     0    0     0     0    0  5000    7    0
* GigabitEthernet0/20      0     0    0     0  7000    7 50000   16    0
* GigabitEthernet0/21      0     0    0     0 712000  272 1841000  312    0
* GigabitEthernet0/22      0     0    0     0     0    0  5000    7    0
* GigabitEthernet0/23      0     0    0     0     0    0  5000    8    0
* GigabitEthernet0/24      0     0    0  1946 529000  216 858000  236    0
  GigabitEthernet1/1       0     0    0     0     0    0     0    0    0
  GigabitEthernet1/2       0     0    0     0     0    0     0    0    0
  GigabitEthernet1/3       0     0    0     0     0    0     0    0    0
  GigabitEthernet1/4       0     0    0     0     0    0     0    0    0
  TenGigabitEthernet1/1    0     0    0     0     0    0     0    0    0
  TenGigabitEthernet1/2    0     0    0     0     0    0     0    0    0
 

 

 

New Member

here is the interface details

here is the interface details for the other 3 ports involved in this transfer

DMI_Servers#sho int gi0/24
GigabitEthernet0/24 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is acf2.c569.4a98 (bia acf2.c569.4a98)
  Description: bunker to inside
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:08, output 00:00:01, output hang never
  Last clearing of "show interface" counters 3d02h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1946
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 726000 bits/sec, 220 packets/sec
  5 minute output rate 756000 bits/sec, 238 packets/sec
     1396189544 packets input, 2022771501072 bytes, 0 no buffer
     Received 1514601 broadcasts (358132 multicasts)
     0 runts, 0 giants, 0 throttles
     1 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 358132 multicast, 0 pause input
     0 input packets with dribble condition detected
     750435630 packets output, 88135812712 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 PAUSE output
     0 output buffer failures, 0 output buffers swapped out

 

OFFICE_SWITCH#sho int gi0/44
GigabitEthernet0/44 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is c89c.1dc6.ceac (bia c89c.1dc6.ceac)
  Description: Brian
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:01, output hang never
  Last clearing of "show interface" counters 3d01h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 6000 bits/sec, 7 packets/sec
  5 minute output rate 86000 bits/sec, 18 packets/sec
     36395331 packets input, 44999491924 bytes, 0 no buffer
     Received 30285 broadcasts (6161 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 6161 multicast, 0 pause input
     0 input packets with dribble condition detected
     28762162 packets output, 14206416279 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 PAUSE output
     0 output buffer failures, 0 output buffers swapped out

OFFICE_SWITCH#sho int gi0/1
GigabitEthernet0/1 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is c89c.1dc6.ce81 (bia c89c.1dc6.ce81)
  Description: Uplink to Bunker
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:01, output 00:00:04, output hang never
  Last clearing of "show interface" counters 3d01h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 2628
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 757000 bits/sec, 207 packets/sec
  5 minute output rate 472000 bits/sec, 189 packets/sec
     747372399 packets input, 87801476117 bytes, 0 no buffer
     Received 503064 broadcasts (200083 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 200083 multicast, 0 pause input
     0 input packets with dribble condition detected
     1392022550 packets output, 2016832790921 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 PAUSE output
     0 output buffer failures, 0 output buffers swapped out

I was looking for CRC errors,

I was looking for CRC errors, but I don't see any on any of the interfaces that you posted. The output drops that you're seeing could be due to qos or congestion in general. What are you transferring? FTP? I don't see anything glaringly wrong...

HTH, John *** Please rate all useful posts ***
New Member

its just a windows transfer

its just a windows transfer to mapped ifs shares on the as400  I would guess its SMB.

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