diff --git a/src/common/util.cpp b/src/common/util.cpp index 43973c511..58b0d8210 100644 --- a/src/common/util.cpp +++ b/src/common/util.cpp @@ -728,6 +728,21 @@ std::string get_nix_version_display_string() return true; } + ssize_t get_lockable_memory() + { +#ifdef __GLIBC__ + struct rlimit rlim; + if (getrlimit(RLIMIT_MEMLOCK, &rlim) < 0) + { + MERROR("Failed to determine the lockable memory limit"); + return -1; + } + return rlim.rlim_cur; +#else + return -1; +#endif + } + bool on_startup() { mlog_configure("", true); diff --git a/src/common/util.h b/src/common/util.h index e793a42b5..1c5c5f4e7 100644 --- a/src/common/util.h +++ b/src/common/util.h @@ -221,6 +221,8 @@ namespace tools void set_strict_default_file_permissions(bool strict); + ssize_t get_lockable_memory(); + void set_max_concurrency(unsigned n); unsigned get_max_concurrency(); diff --git a/src/wallet/wallet_args.cpp b/src/wallet/wallet_args.cpp index 95a4e0ad6..b9d0a6a75 100644 --- a/src/wallet/wallet_args.cpp +++ b/src/wallet/wallet_args.cpp @@ -211,6 +211,14 @@ namespace wallet_args Print(print) << boost::format(wallet_args::tr("Logging to %s")) % log_path; + const ssize_t lockable_memory = tools::get_lockable_memory(); + if (lockable_memory >= 0 && lockable_memory < 256 * 4096) // 256 pages -> at least 256 secret keys and other such small/medium objects + Print(print) << tr("WARNING: You may not have a high enough lockable memory limit") +#ifdef ELPP_OS_UNIX + << ", " << tr("see ulimit -l") +#endif + ; + return {std::move(vm), should_terminate}; } }