423499 2020-06-25 13:44:09 +0000 KFileItem::iconName ignorant of isSlow() and can block gui thread 2025-05-29 21:51:42 +0000 1 1 3 Frameworks and Libraries frameworks-kio general git master Other Linux UNCONFIRMED https://bugs.kde.org/show_bug.cgi?id=178678 efficiency-and-performance NOR normal --- 423082 504984 0 sitter kio-bugs-null accounts+kde kdelibs-bugs-null nate postix 0 oldest_to_newest 1939751 0 sitter 2020-06-25 13:44:09 +0000 ``` if (isLocalUrl && !delaySlowOperations && isDir()) { if (isDirectoryMounted(url)) { d->m_iconName = iconFromDirectoryFile(url.toLocalFile()); ``` if the file system is a mounted sshfs or cifs we'll read the .directory files but really we shouldn't because they are network bound and may be slow. Furthermore they may be backed by HDDs which may crumble under stress. Since iconFromDirectoryFile does blocking POSIX reads this effectively means the gui thread will block on slow network mounts. isSlow() should be taken into consideration somewhere in that block.