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https://issues.apache.org/jira/browse/TS-4885?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Peach resolved TS-4885.
-----------------------------
Resolution: Fixed
Assignee: Oknet Xu
Fix Version/s: 7.1.0
> Incorrect checking of fds_throttle and fds_limit
> ------------------------------------------------
>
> Key: TS-4885
> URL: https://issues.apache.org/jira/browse/TS-4885
> Project: Traffic Server
> Issue Type: Bug
> Components: Core
> Reporter: Oknet Xu
> Assignee: Oknet Xu
> Fix For: 7.1.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> {code}
> 902 static void
> 903 check_fd_limit()
> 904 {
> 905 int fds_throttle = -1;
> 906 REC_ReadConfigInteger(fds_throttle,
> "proxy.config.net.connections_throttle");
> 907 if (fds_throttle > fds_limit + THROTTLE_FD_HEADROOM) { //
> -------> Incorrect
> 908 int new_fds_throttle = fds_limit - THROTTLE_FD_HEADROOM;
> 909 if (new_fds_throttle < 1) {
> 910 ink_abort("too few file descriptors (%d) available", fds_limit);
> 911 }
> 912 char msg[256];
> 913 snprintf(msg, sizeof(msg), "connection throttle too high, "
> 914 "%d (throttle) + %d (internal use) > %d
> (file descriptor limit), "
> 915 "using throttle of %d",
> 916 fds_throttle, THROTTLE_FD_HEADROOM, fds_limit,
> new_fds_throttle);
> 917 SignalWarning(MGMT_SIGNAL_SYSTEM_ERROR, msg);
> 918 }
> 919 }
> {code}
> {code}
> 1001 static void
> 1002 adjust_sys_settings(void)
> 1003 {
> ...
> 1024 REC_ReadConfigInteger(fds_throttle,
> "proxy.config.net.connections_throttle");
> 1025
> 1026 if (getrlimit(RLIMIT_NOFILE, &lim) == 0) {
> 1027 if (fds_throttle > (int)(lim.rlim_cur + THROTTLE_FD_HEADROOM)) { //
> ------> Incorrect
> 1028 lim.rlim_cur = (lim.rlim_max = (rlim_t)fds_throttle);
> 1029 if (setrlimit(RLIMIT_NOFILE, &lim) == 0 &&
> getrlimit(RLIMIT_NOFILE, &lim) == 0) {
> 1030 fds_limit = (int)lim.rlim_cur;
> 1031 syslog(LOG_NOTICE, "NOTE: RLIMIT_NOFILE(%d):cur(%d),max(%d)",
> RLIMIT_NOFILE, (int)lim.rlim_cur, (int)lim.rlim_max);
> 1032 }
> 1033 }
> 1034 }
> ...
> 1043 }
> {code}
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