Date: Tue, 3 Nov 1998 09:45:53 -0500 (EST) From: Bob Bridgham <bob@netacc.net> To: freebsd-questions@FreeBSD.ORG Subject: Server Ret-Failed Message-ID: <Pine.BSF.4.02.9811030941040.27659-100000@net3.netacc.net>
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Question,
We have a FreeBSD 2.2.6 server running on a 266Pentium with
128Megs RAM. We are running qmail on the server, and qpopper, and NFS.
The problem is we are getting this from nfsstat :
Server Info:
Getattr Setattr Lookup Readlink Read Write Create Remove
122312 13617 295405 54 42856 73880 5771 6042
Rename Link Symlink Mkdir Rmdir Readdir RdirPlus Access
13415 555 0 20 1 670 30 820579
Mknod Fsstat Fsinfo PathConf Commit GLease Vacate Evict
1 0 0 0 17754 0 0 0
Server Ret-Failed
195018
Server Faults
0
Server Cache Stats:
Inprog Idem Non-idem Misses
174 20 41 1412942
Server Lease Stats:
Leases PeakL GLeases
0 0 0
Server Write Gathering:
WriteOps WriteRPC Opsaved
73833 73880 47
Now I am not sure what the exact problem is, but we have a ton of
customers that are getting super slow connections, or drop'd connections,
including staff local on the ethernet with 100MBit FDX.
Here is my netstat -p udp
udp:
1496832 datagrams received
0 with incomplete header
0 with bad data length field
0 with bad checksum
6071 dropped due to no socket
7822 broadcast/multicast datagrams dropped due to no socket
0 dropped due to full socket buffers
0 not for hashed pcb
1482939 delivered
1484971 datagrams output
tcp:
397231 packets sent
225815 data packets (124271538 bytes)
12275 data packets (12739917 bytes) retransmitted
3 resends initiated by MTU discovery
81739 ack-only packets (28033 delayed)
0 URG only packets
10 window probe packets
42763 window update packets
34629 control packets
425182 packets received
206467 acks (for 123963652 bytes)
25737 duplicate acks
0 acks for unsent data
220249 packets (133784502 bytes) received in-sequence
6261 completely duplicate packets (2471574 bytes)
0 old duplicate packets
96 packets with some dup. data (28256 bytes duped)
23498 out-of-order packets (9215738 bytes)
18 packets (10220 bytes) of data after window
0 window probes
2039 window update packets
2415 packets received after close
31 discarded for bad checksums
0 discarded for bad header offset fields
0 discarded because packet too short
17317 connection requests
14633 connection accepts
2262 bad connection attempts
0 listen queue overflows
17683 connections established (including accepts)
40867 connections closed (including 1403 drops)
744 connections updated cached RTT on close
744 connections updated cached RTT variance on close
550 connections updated cached ssthresh on close
12870 embryonic connections dropped
161666 segments updated rtt (of 182705 attempts)
12261 retransmit timeouts
36 connections dropped by rexmit timeout
12 persist timeouts
0 connections dropped by persist timeout
20 keepalive timeouts
0 keepalive probes sent
20 connections dropped by keepalive
22576 correct ACK header predictions
135971 correct data packet header predictions
netstat -i
de0 1500 <Link> 00.e0.29.05.db.41 2281794 0 2070850 2 0
Can anyone tell me what the problem is or point me in the correct
direction?
Bob Bridgham
Network Administrator
NetAccess Inc.
Phone : (716) 756-5500
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