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Top Forums UNIX for Advanced & Expert Users Any idea what this counter means "tcpTimRetrans" Post 302259369 by zaxxon on Tuesday 18th of November 2008 12:36:54 AM
Old 11-18-2008
You should read those links carefully... as example from the second link I've posted:

Quote:
We can get a better idea of the traffic levels by looking at the TCP throughput counters. The outgoing data is divided into segments, where each segment corresponds to an Ethernet packet. Delivery of a segment is acknowledged by the other end. If no acknowledgment is received the segment is retransmitted.
The reader will assume that if that happens, the "tcpTimRetrans" counter will increase by one at least. And also there is mentioned "segment". So since this counts for both cases, it seems both counters increase by 1 in parallel if that happens.
In short terms, there was some network / TCP/IP trouble and it tried to retransmit it's packets/segements until it were accomplished or some packets were dropped/discarded. If this count is increasing all the time when monitoring it, maybe you should check the hosts configuration or that of the hosts it is talking with.
At least this would be my guess.
 

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CURLOPT_TCP_NODELAY(3)					     curl_easy_setopt options					    CURLOPT_TCP_NODELAY(3)

NAME
CURLOPT_TCP_NODELAY - set the TCP_NODELAY option SYNOPSIS
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TCP_NODELAY, long nodelay); DESCRIPTION
Pass a long specifying whether the TCP_NODELAY option is to be set or cleared (1 = set, 0 = clear). The option is set by default. This will have no effect after the connection has been established. Setting this option will disable TCP's Nagle algorithm. The purpose of this algorithm is to try to minimize the number of small packets on the network (where "small packets" means TCP segments less than the Maximum Segment Size (MSS) for the network). Maximizing the amount of data sent per TCP segment is good because it amortizes the overhead of the send. However, in some cases small seg- ments may need to be sent without delay. This is less efficient than sending larger amounts of data at a time, and can contribute to con- gestion on the network if overdone. DEFAULT
1 PROTOCOLS
All EXAMPLE
TODO AVAILABILITY
Always. The default was changed to 1 from 0 in 7.50.2. RETURN VALUE
Returns CURLE_OK SEE ALSO
CURLOPT_SOCKOPTFUNCTION(3), CURLOPT_TCP_KEEPALIVE(3), libcurl 7.54.0 June 30, 2016 CURLOPT_TCP_NODELAY(3)
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